Sample & Buy Product Folder Support & Community Tools & Software Technical Documents LMP7701, LMP7702, LMP7704 SNOSAI9I - SEPTEMBER 2005 - REVISED NOVEMBER 2015 LMP770x Precision, CMOS Input, RRIO, Wide Supply Range Amplifiers 1 Features 3 Description * The LMP770x are single, dual, and quad low-offset voltage, rail-to-rail input and output precision amplifiers, each with a CMOS input stage and a wide supply voltage range. The LMP770x are part of the LMPTM precision amplifier family and are ideal for sensor interface and other instrumentation applications. 1 * * * * * * * * * * * * * * Unless Otherwise Noted, Typical Values at VS = 5 V Input Offset Voltage (LMP7701): 200-V (Maximum) Input Offset Voltage (LMP7702/LMP7704): 220V (Maximum) Input Bias Current: 200 fA Input Bias Current: 200 fA Input Voltage Noise: 9 nV/Hz CMRR: 130 dB Open-Loop Gain: 130 dB Temperature Range: -40C to 125C Unity-Gain Bandwidth: 2.5 MHz Supply Current (LMP7701): 715 A Supply Current (LMP7702): 1.5 mA Supply Current (LMP7704): 2.9 mA Supply Voltage Range: 2.7 V to 12 V Rail-to-Rail Input and Output The specified low-offset voltage of less than 200 V, along with the specified low input bias current of less than 1 pA, make the LMP7701 ideal for precision applications. The LMP770x are built using VIP50 technology, which allows the combination of a CMOS input stage and a 12-V common-mode and supply voltage range. This makes the LMP770x ideal for applications where conventional CMOS parts cannot operate under the desired voltage conditions. Device Information(1) PART NUMBER LMP7701 LMP7702 2 Applications * * * * * * High Impedance Sensor Interface Battery-Powered Instrumentation High Gain Amplifiers DAC Buffer Instrumentation Amplifier Active Filters LMP7704 PACKAGE BODY SIZE (NOM) SOT-23 (5) 1.60 mm x 2.90 mm SOIC (8) 3.91 mm x 4.90 mm VSSOP (8) 3.00 mm x 3.00 mm SOIC (8) 3.91 mm x 4.90 mm TSSOP (14) 4.40 mm x 5.00 mm SOIC (14) 3.91 mm x 8.65 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. Typical Application Schematic R R V1 V + - RS I = (V2 V1) A1 RS + V - V + Z R LOAD - R V2 A2 + - V 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. LMP7701, LMP7702, LMP7704 SNOSAI9I - SEPTEMBER 2005 - REVISED NOVEMBER 2015 www.ti.com Table of Contents 1 2 3 4 5 6 7 Features .................................................................. Applications ........................................................... Description ............................................................. Revision History..................................................... Description (continued)......................................... Pin Configuration and Functions ......................... Specifications......................................................... 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.8 8 1 1 1 2 3 3 5 Absolute Maximum Ratings ..................................... 5 ESD Ratings.............................................................. 5 Recommended Operating Conditions ...................... 6 Thermal Information .................................................. 6 Electrical Characteristics 3-V .................................... 6 Electrical Characteristics 5-V .................................... 9 Electrical Characteristics 5-V ................................ 11 Typical Characteristics ............................................ 14 Detailed Description ............................................ 21 8.1 Overview ................................................................. 21 8.2 Functional Block Diagram ....................................... 21 8.3 Feature Description................................................. 21 8.4 Device Functional Modes........................................ 25 9 Application and Implementation ........................ 25 9.1 Application Information............................................ 25 9.2 Typical Application .................................................. 27 10 Power Supply Recommendations ..................... 30 11 Layout................................................................... 31 11.1 Layout Guidelines ................................................. 31 11.2 Layout Example .................................................... 31 12 Device and Documentation Support ................. 32 12.1 12.2 12.3 12.4 12.5 Related Links ........................................................ Community Resources.......................................... Trademarks ........................................................... Electrostatic Discharge Caution ............................ Glossary ................................................................ 32 32 32 32 32 13 Mechanical, Packaging, and Orderable Information ........................................................... 32 4 Revision History NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision H (March 2013) to Revision I * Page Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information section. ................................................................................................ 1 Changes from Revision G (March 2013) to Revision H * 2 Page Changed layout of National Data Sheet to TI format ........................................................................................................... 27 Submit Documentation Feedback Copyright (c) 2005-2015, Texas Instruments Incorporated Product Folder Links: LMP7701 LMP7702 LMP7704 LMP7701, LMP7702, LMP7704 www.ti.com SNOSAI9I - SEPTEMBER 2005 - REVISED NOVEMBER 2015 5 Description (continued) The LMP770x each have a rail-to-rail input stage that significantly reduces the CMRR glitch commonly associated with rail-to-rail input amplifiers. This is achieved by trimming both sides of the complimentary input stage, thereby reducing the difference between the NMOS and PMOS offsets. The output of the LMP770x swings within 40 mV of either rail to maximize the signal dynamic range in applications requiring low supply voltage. The LMP7701 is offered in the space-saving 5-Pin SOT-23 and 8-Pin SOIC package. The LMP7702 is offered in the 8-Pin SOIC and 8-Pin VSSOP package. The quad LMP7704 is offered in the 14-Pin SOIC and 14-Pin TSSOP package. These small packages are ideal solutions for area constrained PC boards and portable electronics. 6 Pin Configuration and Functions LMP7701 DBV Package 5-Pin SOT-23 Top View OUT - V LMP7701 D Package 8-Pin SOIC Top View 5 1 + V N/C 2 -IN + +IN IN+ 4 3 1 8 2 7 - 3 6 + N/C + V OUTPUT IN- 4 5 V N/C Pin Functions - LMP7701 PIN NAME I/O DESCRIPTION SOT-23 SOIC IN+ 3 3 I Noninverting Input IN- 4 2 I Inverting Input IN A + -- -- I Noninverting Input for Amplifier A - IN A -- -- I Inverting Input for Amplifier A IN B+ -- -- I Noninverting Input for Amplifier B IN B- -- -- I Inverting Input for Amplifier B + IN C -- -- I Noninverting Input for Amplifier C IN C- -- -- I Inverting Input for Amplifier C IN D+ -- -- I Noninverting Input for Amplifier D - IN D -- -- I Inverting Input for Amplifier D NC -- 1, 5, 8 -- No connection OUT 1 6 O Output OUT A -- -- O Output for Amplifier A OUT B -- -- O Output for Amplifier B OUT C -- -- O Output for Amplifier C OUT D -- -- O Output for Amplifier D + V 5 7 P Positive Supply V- 2 4 P Negative Supply Copyright (c) 2005-2015, Texas Instruments Incorporated Product Folder Links: LMP7701 LMP7702 LMP7704 Submit Documentation Feedback 3 LMP7701, LMP7702, LMP7704 SNOSAI9I - SEPTEMBER 2005 - REVISED NOVEMBER 2015 www.ti.com LMP7702 D or DGK Package 8-Pin SOIC or VSSOP Top View Pin Functions - LMP7702 PIN NAME SOIC, VSSOP I/O DESCRIPTION IN+ -- I Noninverting Input IN- -- I Inverting Input + IN A 3 I Noninverting Input for Amplifier A IN A- 2 I Inverting Input for Amplifier A IN B+ 5 I Noninverting Input for Amplifier B IN B- 6 I Inverting Input for Amplifier B + IN C -- I Noninverting Input for Amplifier C IN C- -- I Inverting Input for Amplifier C IN D+ -- I Noninverting Input for Amplifier D - IN D -- I Inverting Input for Amplifier D NC -- -- No connection OUT -- O Output OUT A 1 O Output for Amplifier A OUT B 7 O Output for Amplifier B OUT C -- O Output for Amplifier C OUT D -- O Output for Amplifier D + V 8 P Positive Supply V- 4 P Negative Supply LMP7704 D or PW Package 14-Pin SOIC or TSSOP Top View 4 Submit Documentation Feedback Copyright (c) 2005-2015, Texas Instruments Incorporated Product Folder Links: LMP7701 LMP7702 LMP7704 LMP7701, LMP7702, LMP7704 www.ti.com SNOSAI9I - SEPTEMBER 2005 - REVISED NOVEMBER 2015 Pin Functions - LMP7704 PIN NAME SOIC, TSSOP I/O DESCRIPTION IN+ -- I Noninverting Input IN- -- I Inverting Input + IN A 3 I Noninverting Input for Amplifier A IN A- 2 I Inverting Input for Amplifier A IN B+ 5 I Noninverting Input for Amplifier B IN B- 6 I Inverting Input for Amplifier B IN C 10 I Noninverting Input for Amplifier C IN C- 9 I Inverting Input for Amplifier C IN D+ 12 I Noninverting Input for Amplifier D - IN D 13 I Inverting Input for Amplifier D NC -- -- No connection OUT -- O Output OUT A 1 O Output for Amplifier A OUT B 7 O Output for Amplifier B OUT C 8 O Output for Amplifier C OUT D 14 O Output for Amplifier D V 4 P Positive Supply V- 11 P Negative Supply + + 7 Specifications 7.1 Absolute Maximum Ratings See (1) (2) MAX UNIT VIN differential MIN 300 mV Supply voltage (VS = V+ - V-) 13.2 V V++ 0.3, V- - 0.3 V Voltage at input/output pins Input current Junction temperature (3) Soldering information Infrared or convection (20 sec) Wave soldering lead temp. (10 sec) -65 Storage temperature, Tstg (1) (2) (3) 10 mA +150 C 235 C 260 C 150 C Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions . Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. If Military/Aerospace specified devices are required, contact the TI Sales Office/ Distributors for availability and specifications. The maximum power dissipation is a function of TJ(MAX), JA. The maximum allowable power dissipation at any ambient temperature is PD = (TJ(MAX) - TA)/ JA. All numbers apply for packages soldered directly onto a PC Board. 7.2 ESD Ratings VALUE Human body model (HBM), per ANSI/ESDA/JEDEC JS-001 V(ESD) (1) (2) (3) Electrostatic discharge (1) (2) UNIT 2000 Charged-device model (CDM), per JEDEC specification JESD22-C101 (3) 1000 Machine Model (MM) 200 V JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. Human Body Model, applicable std. MIL-STD-883, Method 3015.7. Machine Model, applicable std. JESD22-A115-A (ESD MM std. of JEDEC) Field-Induced Charge-Device Model, applicable std. JESD22-C101-C (ESD FICDM std. of JEDEC). JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process. Copyright (c) 2005-2015, Texas Instruments Incorporated Product Folder Links: LMP7701 LMP7702 LMP7704 Submit Documentation Feedback 5 LMP7701, LMP7702, LMP7704 SNOSAI9I - SEPTEMBER 2005 - REVISED NOVEMBER 2015 www.ti.com 7.3 Recommended Operating Conditions MIN Temperature range (1) Supply voltage (VS = V+ - V-) (1) MAX UNIT -40 NOM 125 C 2.7 12 V The maximum power dissipation is a function of TJ(MAX), JA. The maximum allowable power dissipation at any ambient temperature is PD = (TJ(MAX) - TA)/ JA. All numbers apply for packages soldered directly onto a PC Board. 7.4 Thermal Information THERMAL METRIC (1) (2) LMP7701 LMP7701, LMP7702 LMP7702 DBV (SOT-23) D (SOIC) DGK (VSSOP) D (SOIC) PW (TSSOP) 5 PINS 8 PINS 8 PINS 14 PINS 14 PINS 122.9 114.3 167.5 79.9 107.5 C/W LMP7704 UNIT RJA Junction-to-ambient thermal resistance RJC(top) Junction-to-case (top) thermal resistance 69.3 59.5 58.7 36.9 33.0 C/W RJB Junction-to-board thermal resistance 63.3 54.8 87.5 34.7 50.4 C/W JT Junction-to-top characterization parameter 19.4 12.1 6.6 5.5 1.8 C/W JB Junction-to-board characterization parameter 62.8 54.2 86.1 34.4 49.7 C/W (1) (2) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report (SPRA953). The maximum power dissipation is a function of TJ(MAX), JA. The maximum allowable power dissipation at any ambient temperature is PD = (TJ(MAX) - TA)/ JA. All numbers apply for packages soldered directly onto a PC Board. 7.5 Electrical Characteristics 3-V Unless otherwise specified, all limits are ensured for TA = 25C, V+ = 3 V, V- = 0 V, VCM = V+/2, and RL > 10 k to V+/2. (1) PARAMETER TEST CONDITIONS MIN (2) TYP (3) 37 LMP7701 VOS Input Offset Voltage Input Offset Voltage Temperature Drift at the temperature extremes (4) Input Bias Current See -40C TA 125C (1) (2) (3) (4) (5) 6 200 220 V 520 at the temperature extremes 5 0.2 at the temperature extremes at the temperature extremes Input Offset Current V/C 1 50 0.2 (4) (5) IOS UNIT 1 See See (4) (5) -40C TA 85C IB (2) 500 56 LMP7702/LMP7704 TCVOS at the temperature extremes MAX 1 pA 400 40 fA Electrical Table values apply only for factory testing conditions at the temperature indicated. Factory testing conditions result in very limited self-heating of the device such that TJ = TA. No specification of parametric performance is indicated in the electrical tables under conditions of internal self-heating where TJ > TA. Limits are 100% production tested at 25C. Limits over the operating temperature range are specified through correlations using the Statistical Quality Control (SQC) method. Typical values represent the most likely parametric norm as determined at the time of characterization. Actual typical values may vary over time and will also depend on the application and configuration. The typical values are not tested and are not specified on shipped production material. This parameter is specified by design and/or characterization and is not tested in production. Positive current corresponds to current flowing into the device. Submit Documentation Feedback Copyright (c) 2005-2015, Texas Instruments Incorporated Product Folder Links: LMP7701 LMP7702 LMP7704 LMP7701, LMP7702, LMP7704 www.ti.com SNOSAI9I - SEPTEMBER 2005 - REVISED NOVEMBER 2015 Electrical Characteristics 3-V (continued) Unless otherwise specified, all limits are ensured for TA = 25C, V+ = 3 V, V- = 0 V, VCM = V+/2, and RL > 10 k to V+/2.(1) PARAMETER TEST CONDITIONS 0 V VCM 3 V LMP7701 CMRR Common-Mode Rejection Ratio 0 V VCM 3 V LMP7702/LMP7704 MIN (2) 86 at the temperature extremes Power Supply Rejection Ratio CMVR Common-Mode Voltage Range 2.7 V V+ 12 V, Vo = V+/2 at the temperature extremes CMRR 80 dB CMRR 77 dB RL = 2 k (LMP7701) VO = 0.3 V to 2.7 V AVOL Open-Loop Voltage Gain RL = 2 k (LMP7702/LMP7704) VO = 0.3 V to 2.7 V RL = 10 k VO = 0.2 V to 2.8 V VOUT RL = 2 k to V+/2 LMP7701 RL = 2 k to V+/2 LMP7702/LMP7704 Output Voltage Swing High RL = 10 k to V+/2 LMP7701 RL = 10 k to V+/2 LMP7702/LMP7704 RL = 2 k to V+/2 LMP7701 RL = 2 k to V+/2 LMP7702/LMP7704 Output Voltage Swing Low RL = 10 k to V+/2 LMP7701 RL = 10 k to V+/2 LMP7702/LMP7704 at the temperature extremes 98 dB -0.2 3.2 96 114 dB 94 124 96 40 at the temperature extremes 80 150 30 at the temperature extremes mV + 40 from V 60 35 at the temperature extremes 50 100 40 at the temperature extremes 60 80 45 at the temperature extremes 100 170 20 at the temperature extremes 40 mV 50 20 Product Folder Links: LMP7701 LMP7702 LMP7704 80 120 40 Copyright (c) 2005-2015, Texas Instruments Incorporated V 114 at the temperature extremes at the temperature extremes dB 130 3.2 100 at the temperature extremes UNIT 130 -0.2 100 at the temperature extremes (2) 82 100 at the temperature extremes MAX 78 86 PSRR (3) 80 84 at the temperature extremes TYP 50 90 Submit Documentation Feedback 7 LMP7701, LMP7702, LMP7704 SNOSAI9I - SEPTEMBER 2005 - REVISED NOVEMBER 2015 www.ti.com Electrical Characteristics 3-V (continued) Unless otherwise specified, all limits are ensured for TA = 25C, V+ = 3 V, V- = 0 V, VCM = V+/2, and RL > 10 k to V+/2.(1) PARAMETER TEST CONDITIONS Sourcing VO = V+/2 VIN = 100 mV IOUT Output Current Sinking VO = V+/2 VIN = -100 mV (LMP7701) (6) (7) Sinking VO = V+/2 VIN = -100 mV (LMP7702/LMP7704) MIN (2) 25 at the temperature extremes at the temperature extremes Supply Current LMP7702 at the temperature extremes LMP7704 at the temperature extremes mA 42 15 AV = +1, VO = 2 VPP 10% to 90% (8) Slew Rate GBW Gain Bandwidth THD+N Total Harmonic Distortion + Noise f = 1 kHz, AV = 1, R.L = 10 k 1 1.2 1.8 2.1 2.9 SR UNIT 42 1.4 IS (2) 42 0.670 LMP7701 MAX 20 25 at the temperature extremes (3) 15 25 at the temperature extremes TYP mA 3.5 4.5 0.9 V/s 2.5 MHz 0.02% en Input Referred Voltage Noise Density f = 1 kHz 9 nV/Hz in Input Referred Current Noise Density f = 100 kHz 1 fA/Hz (6) (7) (8) 8 The maximum power dissipation is a function of TJ(MAX), JA. The maximum allowable power dissipation at any ambient temperature is PD = (TJ(MAX) - TA)/ JA. All numbers apply for packages soldered directly onto a PC Board. The short circuit test is a momentary test. The number specified is the slower of positive and negative slew rates. Submit Documentation Feedback Copyright (c) 2005-2015, Texas Instruments Incorporated Product Folder Links: LMP7701 LMP7702 LMP7704 LMP7701, LMP7702, LMP7704 www.ti.com SNOSAI9I - SEPTEMBER 2005 - REVISED NOVEMBER 2015 7.6 Electrical Characteristics 5-V Unless otherwise specified, all limits are ensured for TA = 25C, V+ = 5 V, V- = 0 V, VCM = V+/2, and RL > 10 k to V+/2. (1) PARAMETER TEST CONDITIONS MIN (2) TYP (3) 37 LMP7701 VOS Input Offset Voltage Input Offset Voltage Temperature Drift (4) See (4) (5) -40C TA 85C IB at the temperature extremes Input Bias Current IOS 0.2 at the temperature extremes Common-Mode Rejection Ratio 0 V VCM 5 V LMP7702/LMP7704 at the temperature extremes CMVR Common-Mode Voltage Range 88 at the temperature extremes 2.7 V V+ 12 V, VO = V+/2 at the temperature extremes CMRR 78 dB RL = 2 k (LMP7701) VO = 0.3 V to 4.7 V Open-Loop Voltage Gain RL = 2 k (LMP7702/LMP7704) VO = 0.3 V to 4.7 V RL = 10 k VO = 0.2 V to 4.8 V (1) (2) (3) (4) (5) at the temperature extremes 100 dB -0.2 5.2 -0.2 5.2 V 119 96 119 dB 94 100 at the temperature extremes dB 130 82 100 at the temperature extremes fA 130 81 100 at the temperature extremes pA 83 86 CMRR 80 dB AVOL 1 400 86 Power Supply Rejection Ratio 1 50 0.2 at the temperature extremes V 5 40 0 V VCM 5 V LMP7701 PSRR 220 V/C Input Offset Current CMRR 200 at the temperature extremes (4) (5) See -40C TA 125C UNIT 520 1 See (2) 500 32 LMP7702/LMP7704 TCVOS at the temperature extremes MAX 130 96 Electrical Table values apply only for factory testing conditions at the temperature indicated. Factory testing conditions result in very limited self-heating of the device such that TJ = TA. No specification of parametric performance is indicated in the electrical tables under conditions of internal self-heating where TJ > TA. Limits are 100% production tested at 25C. Limits over the operating temperature range are specified through correlations using the Statistical Quality Control (SQC) method. Typical values represent the most likely parametric norm as determined at the time of characterization. Actual typical values may vary over time and will also depend on the application and configuration. The typical values are not tested and are not ensured on shipped production material. This parameter is specified by design and/or characterization and is not tested in production. Positive current corresponds to current flowing into the device. Copyright (c) 2005-2015, Texas Instruments Incorporated Product Folder Links: LMP7701 LMP7702 LMP7704 Submit Documentation Feedback 9 LMP7701, LMP7702, LMP7704 SNOSAI9I - SEPTEMBER 2005 - REVISED NOVEMBER 2015 www.ti.com Electrical Characteristics 5-V (continued) Unless otherwise specified, all limits are ensured for TA = 25C, V+ = 5 V, V- = 0 V, VCM = V+/2, and RL > 10 k to V+/2.(1) PARAMETER TEST CONDITIONS RL = 2 k to V+/2 LMP7701 RL = 2 k to V+/2 LMP7702/LMP7704 Output Voltage Swing High MIN (2) RL = 10 k to V+/2 LMP7702/LMP7704 VOUT RL = 2 k to V+/2 LMP7701 RL = 2 k to V+/2 LMP7702/LMP7704 Output Voltage Swing Low RL = 10 k to V+/2 LMP7701 RL = 10 k to V+/2 LMP7702/LMP7704 Sourcing VO = V+/2 VIN = 100 mV (LMP7701) IOUT Output Current (6) (7) Sourcing VO = V+/2 VIN = 100 mV (LMP7702/LMP7704) 60 at the temperature extremes at the temperature extremes 40 Sinking VO = V+/2 VIN = -100 mV (LMP7702/LMP7704) 50 50 at the temperature extremes 30 40 at the temperature extremes 66 (8) Slew Rate GBW Gain Bandwidth (6) (7) (8) 10 AV = +1, VO = 4 VPP 10% to 90% mA 76 76 23 1 1.2 1.9 2.2 2.9 SR 50 28 40 LMP7704 mV 25 40 at the temperature extremes 40 28 38 LMP7702 120 66 1.5 Supply Current 80 100 0.715 IS 60 50 at the temperature extremes at the temperature extremes mV + 50 from V 190 30 LMP7701 120 90 at the temperature extremes at the temperature extremes 110 120 at the temperature extremes at the temperature extremes UNIT 70 at the temperature extremes at the temperature extremes (2) 200 40 at the temperature extremes MAX 130 60 + Sinking VO = V /2 VIN = -100 mV (LMP7701) (3) at the temperature extremes + RL = 10 k to V /2 LMP7701 TYP mA 3.7 4.6 1 V/s 2.5 MHz The maximum power dissipation is a function of TJ(MAX), JA. The maximum allowable power dissipation at any ambient temperature is PD = (TJ(MAX) - TA)/ JA. All numbers apply for packages soldered directly onto a PC Board. The short circuit test is a momentary test. The number specified is the slower of positive and negative slew rates. Submit Documentation Feedback Copyright (c) 2005-2015, Texas Instruments Incorporated Product Folder Links: LMP7701 LMP7702 LMP7704 LMP7701, LMP7702, LMP7704 www.ti.com SNOSAI9I - SEPTEMBER 2005 - REVISED NOVEMBER 2015 Electrical Characteristics 5-V (continued) Unless otherwise specified, all limits are ensured for TA = 25C, V+ = 5 V, V- = 0 V, VCM = V+/2, and RL > 10 k to V+/2.(1) PARAMETER TEST CONDITIONS MIN (2) TYP (3) MAX (2) UNIT THD+N Total Harmonic Distortion + Noise f = 1 kHz, AV = 1, RL = 10 k en Input Referred Voltage Noise Density f = 1 kHz 9 nV/Hz in Input Referred Current Noise Density f = 100 kHz 1 fA/Hz 0.02% 7.7 Electrical Characteristics 5-V Unless otherwise specified, all limits are ensured for TA = 25C, V+ = 5 V, V- = -5 V, VCM = 0 V, and RL > 10 k to 0 V. (1) PARAMETER TEST CONDITIONS MIN (2) TYP (3) 37 LMP7701 VOS Input Offset Voltage Input Offset Voltage Temperature Drift (4) Input Bias Current See (4) (5) -40C TA 125C IOS at the temperature extremes at the temperature extremes 5 0.2 Common-Mode Rejection Ratio -5 V VCM 5 V LMP7702/LMP7704 at the temperature extremes 0.2 at the temperature extremes CMVR Common-Mode Voltage Range at the temperature extremes 2.7 V V+ 12 V, VO = 0 V at the temperature extremes (2) (3) (4) (5) CMRR 78 dB at the temperature extremes pA fA 138 88 90 CMRR 80 dB (1) 1 400 92 at the temperature extremes V/C 50 dB 138 86 86 Power Supply Rejection Ratio V 1 40 -5 V VCM 5 V LMP7701 PSRR 220 520 Input Offset Current CMRR UNIT 200 1 See See (4) (5) -40C TA 85C IB (2) 500 37 LMP7702/LMP7704 TCVOS at the temperature extremes MAX 98 dB 82 -5.2 5.2 -5.2 5.2 V Electrical Table values apply only for factory testing conditions at the temperature indicated. Factory testing conditions result in very limited self-heating of the device such that TJ = TA. No specification of parametric performance is indicated in the electrical tables under conditions of internal self-heating where TJ > TA. Limits are 100% production tested at 25C. Limits over the operating temperature range are specified through correlations using the Statistical Quality Control (SQC) method. Typical values represent the most likely parametric norm as determined at the time of characterization. Actual typical values may vary over time and will also depend on the application and configuration. The typical values are not tested and are not ensured on shipped production material. This parameter is specified by design and/or characterization and is not tested in production. Positive current corresponds to current flowing into the device. Copyright (c) 2005-2015, Texas Instruments Incorporated Product Folder Links: LMP7701 LMP7702 LMP7704 Submit Documentation Feedback 11 LMP7701, LMP7702, LMP7704 SNOSAI9I - SEPTEMBER 2005 - REVISED NOVEMBER 2015 www.ti.com Electrical Characteristics 5-V (continued) Unless otherwise specified, all limits are ensured for TA = 25C, V+ = 5 V, V- = -5 V, VCM = 0 V, and RL > 10 k to 0 V.(1) PARAMETER TEST CONDITIONS RL = 2 k (LMP7701) VO = -4.7 V to 4.7 V RL = 2 k (LMP7702/LMP7704) VO = -4.7 V to 4.7 V AVOL Open Loop Voltage Gain RL = 10 k (LMP7701) VO = -4.8 V to 4.8 V RL = 10 k (LMP7702/LMP7704) VO = -4.8 V to 4.8 V RL = 2 k to 0 V LMP7701 RL = 2 k to 0 V LMP7702/LMP7704 Output Voltage Swing High RL = 10 k to 0 V LMP7701 RL = 10 k to 0 V LMP7702/LMP7704 VOUT RL = 2 k to 0 V LMP7701 RL = 2 k to 0 V LMP7702/LMP7704 Output Voltage Swing Low RL = 10 k to 0 V LMP7701 RL = 10 k to 0 V LMP7702/LMP7704 Sourcing VO = 0 V VIN = 100 mV (LMP7701) IOUT Output Current (6) (7) Sourcing VO = 0 V VIN = 100 mV (LMP7702/LMP7704) Sinking VO = 0 V VIN = -100 mV (6) (7) 12 MIN (2) 100 at the temperature extremes 121 134 97 150 170 90 at the temperature extremes 180 290 40 at the temperature extremes mV + 80 from V 100 40 at the temperature extremes 80 150 90 at the temperature extremes 130 150 90 at the temperature extremes 180 260 40 at the temperature extremes mV - 50 from V 60 40 at the temperature extremes 60 110 50 86 35 48 86 mA 33 50 at the temperature extremes dB 134 90 at the temperature extremes UNIT 121 at the temperature extremes at the temperature extremes (2) 98 100 at the temperature extremes MAX 94 100 at the temperature extremes (3) 98 100 at the temperature extremes TYP 84 35 The maximum power dissipation is a function of TJ(MAX), JA. The maximum allowable power dissipation at any ambient temperature is PD = (TJ(MAX) - TA)/ JA. All numbers apply for packages soldered directly onto a PC Board. The short circuit test is a momentary test. Submit Documentation Feedback Copyright (c) 2005-2015, Texas Instruments Incorporated Product Folder Links: LMP7701 LMP7702 LMP7704 LMP7701, LMP7702, LMP7704 www.ti.com SNOSAI9I - SEPTEMBER 2005 - REVISED NOVEMBER 2015 Electrical Characteristics 5-V (continued) Unless otherwise specified, all limits are ensured for TA = 25C, V+ = 5 V, V- = -5 V, VCM = 0 V, and RL > 10 k to 0 V.(1) PARAMETER TEST CONDITIONS MIN (2) TYP (3) 0.790 LMP7701 at the temperature extremes Supply Current LMP7702 at the temperature extremes (8) SR Slew Rate GBW Gain Bandwidth Total Harmonic Distortion + THD+N Noise at the temperature extremes AV = +1, VO = 9 VPP 10% to 90% f = 1 kHz, AV = 1, RL = 10 k UNIT 1.1 2.1 mA 2.5 3.2 LMP7704 (2) 1.3 1.7 IS MAX 4.2 5 1.1 V/s 2.5 MHz 0.02% en Input Referred Voltage Noise Density f = 1 kHz 9 nV/Hz in Input Referred Current Noise Density f = 100 kHz 1 fA/Hz (8) The number specified is the slower of positive and negative slew rates. Copyright (c) 2005-2015, Texas Instruments Incorporated Product Folder Links: LMP7701 LMP7702 LMP7704 Submit Documentation Feedback 13 LMP7701, LMP7702, LMP7704 SNOSAI9I - SEPTEMBER 2005 - REVISED NOVEMBER 2015 www.ti.com 7.8 Typical Characteristics TA = 25C, VCM = VS/2, RL > 10 k (unless otherwise noted) 20 25 VS = 3V VS = 3V -40C d TA d 125C 16 PERCENTAGE (%) PERCENTAGE (%) 20 TA = 25C 15 10 12 8 4 5 0 -200 0 -100 0 100 200 -3 -2 OFFSET VOLTAGE (PV) -1 0 Figure 1. Figure 1. Offset Voltage Distribution VS = 5V TA = 25C -40C d TA d 125C 16 PERCENTAGE (%) 20 PERCENTAGE (%) 3 20 VS = 5V 15 10 12 8 4 5 0 -200 0 -100 0 100 OFFSET VOLTAGE (PV) 200 -3 -2 -1 0 1 2 3 TCVOS (PV/C) Figure 3. Offset Voltage Distribution Figure 4. TCVOS Distribution 20 25 VS = 10V VS = 10V -40C d TA d 125C TA = 25C 16 PERCENTAGE (%) 20 PERCENTAGE (%) 2 Figure 2. TCVOS Distribution 25 15 10 12 8 4 5 0 -200 0 -100 0 100 OFFSET VOLTAGE (PV) 200 Figure 5. Offset Voltage Distribution 14 1 TCVOS (PV/C) Submit Documentation Feedback -3 -2 -1 0 1 2 3 TCVOS (PV/C) Figure 6. TCVOS Distribution Copyright (c) 2005-2015, Texas Instruments Incorporated Product Folder Links: LMP7701 LMP7702 LMP7704 LMP7701, LMP7702, LMP7704 www.ti.com SNOSAI9I - SEPTEMBER 2005 - REVISED NOVEMBER 2015 Typical Characteristics (continued) 200 0 150 -20 VS = 3V 100 -40 VS = 3V 50 VS = 5V CMRR (dB) OFFSET VOLTAGE (PV) TA = 25C, VCM = VS/2, RL > 10 k (unless otherwise noted) 0 -50 VS = 5V VS = 10V -80 -100 -100 VS = 10V -120 -150 -200 -140 -40 -20 0 20 40 60 80 100 120125 10 100k 1M FREQUENCY (Hz) Figure 7. Offset Voltage vs Temperature Figure 8. CMRR vs Frequency 200 200 150 150 VS = 3V 100 -40C 50 0 25C -50 -100 125C -40C 100 50 25C 0 -50 125C -100 -150 -150 -200 2 4 6 8 10 -200 -0.5 12 0 0.5 1 1.5 2 2.5 3 3.5 VCM (V) SUPPLY VOLTAGE (V) Figure 10. Offset Voltage vs VCM Figure 9. Offset Voltage vs Supply Voltage 200 200 VS = 10V VS = 5V 150 150 OFFSET VOLTAGE (PV) OFFSET VOLTAGE (PV) 10k 1k 100 TEMPERATURE (C) OFFSET VOLTAGE (PV) OFFSET VOLTAGE (PV) -60 100 -40C 50 0 25C -50 -100 125C -150 100 -40C 50 0 25C -50 -100 -150 125C -200 -200 -1 0 1 2 3 4 5 6 -1 0 1 VCM (V) 2 3 4 5 6 7 8 9 10 11 VCM (V) Figure 11. Offset Voltage vs VCM Figure 12. Offset Voltage vs VCM Copyright (c) 2005-2015, Texas Instruments Incorporated Product Folder Links: LMP7701 LMP7702 LMP7704 Submit Documentation Feedback 15 LMP7701, LMP7702, LMP7704 SNOSAI9I - SEPTEMBER 2005 - REVISED NOVEMBER 2015 www.ti.com Typical Characteristics (continued) TA = 25C, VCM = VS/2, RL > 10 k (unless otherwise noted) 300 200 VS = 3V VS = 3V 200 100 IBIAS (pA) IBIAS (fA) 100 -40C 0 85C 0 -100 -100 -200 125C 25C -300 -200 0 0.5 1 2 1.5 2.5 0 3 0.5 1.5 1 2 3 Figure 14. Input Bias Current vs VCM Figure 13. Input Bias Current vs VCM 300 300 VS = 5V VS = 5V 200 200 100 100 IBIAS (pA) IBIAS (fA) 2.5 VCM (V) VCM (V) -40C 0 85C 0 -100 -100 -200 -200 25C 125C -300 -300 0 1 2 3 4 0 5 1 2 3 4 5 VCM (V) VCM (V) Figure 16. Input Bias Current vs VCM Figure 15. Input Bias Current vs VCM 300 500 VS = 10V VS = 10V 200 250 IBIAS (pA) IBIAS (fA) 100 -40C 0 85C 0 -100 -250 -200 25C 125C -500 -300 0 2 4 6 8 10 0 VCM (V) Submit Documentation Feedback 4 6 8 10 VCM (V) Figure 17. Input Bias Current vs VCM 16 2 Figure 18. Input Bias Current vs VCM Copyright (c) 2005-2015, Texas Instruments Incorporated Product Folder Links: LMP7701 LMP7702 LMP7704 LMP7701, LMP7702, LMP7704 www.ti.com SNOSAI9I - SEPTEMBER 2005 - REVISED NOVEMBER 2015 Typical Characteristics (continued) TA = 25C, VCM = VS/2, RL > 10 k (unless otherwise noted) 120 1.2 VS = 10V VS = 5V 1 SUPPLY CURRENT (mA) 100 VS = 3V +PSRR PSRR (dB) 80 VS = 10V 60 VS = 5V VS = 3V 40 20 125C 25C 0.8 0.6 -40C 0.4 0.2 -PSRR 0 0 10 10k 1k 100 100k 1M 2 4 FREQUENCY (Hz) 6 8 10 12 SUPPLY VOLTAGE (V) Figure 19. PSRR vs Frequency Figure 20. Supply Current vs Supply Voltage (Per Channel) 120 120 -40C 100 -40C 100 25C 25C 60 ISOURCE (mA) ISINK (mA) 80 125C 40 20 125C 60 40 20 0 0 2 4 6 8 10 12 2 4 6 8 10 12 SUPPLY VOLTAGE (V) SUPPLY VOLTAGE (V) Figure 21. Sinking Current vs Supply Voltage Figure 22. Sourcing Current vs Supply Voltage + 1.5 V TA = -40C, 25C, 125C (V ) -1 VIN = 2 VPP (V ) -2 | | 3V 2 SLEW RATE (V/Ps) 1.3 + RL = 10 k: FALLING EDGE 1.2 CL = 10 pF 1.1 1 0.9 RISING EDGE 0.8 0.7 1 VS = 3V, 5V, 10V 0 AV = +1 1.4 + VOUT FROM RAIL (V) 80 0.6 0.5 0 20 40 60 80 100 2 OUTPUT CURRENT (mA) Figure 23. Output Voltage vs Output Current 4 6 8 10 12 SUPPLY VOLTAGE (V) Figure 24. Slew Rate vs Supply Voltage Copyright (c) 2005-2015, Texas Instruments Incorporated Product Folder Links: LMP7701 LMP7702 LMP7704 Submit Documentation Feedback 17 LMP7701, LMP7702, LMP7704 SNOSAI9I - SEPTEMBER 2005 - REVISED NOVEMBER 2015 www.ti.com Typical Characteristics (continued) TA = 25C, VCM = VS/2, RL > 10 k (unless otherwise noted) 100 225 GAIN 80 60 180 80 135 60 90 40 CL = 20 pF, 50 pF, 100 pF 180 RL = 10 k: VS = 10V 20 125C 45 125C 0 0 25C -20 VS = 5V C = 20 pF -40 L RL = 10 k: -60 100 10k 1k -40C -45 -90 GAIN (dB) 25C PHASE PHASE () GAIN (dB) -40C 40 CL = 20 pF PHASE 20 0 -45 -20 VS = 3V -40 100k 1M -135 10M 100M -60 100 1k -90 10k 100k 1M FREQUENCY (Hz) VS = 5V f = 10 kHz VS = 5V f = 10 kHz AV = +1 AV = +1 VIN = 2 VPP VIN = 100 mVPP RL = 10 k: RL = 10 k: CL = 10 pF CL = 10 pF 10 Ps/DIV 10 Ps/DIV Figure 28. Small Signal Step Response 200 mV/DIV Figure 27. Large Signal Step Response VS = 5V f = 10 kHz VS = 5V f = 10 kHz AV = +10 AV = +10 VIN = 400 mVPP VIN = 100 mVPP RL = 10 k: RL = 10 k: CL = 10 pF CL = 10 pF 10 Ps/DIV 10 Ps/DIV Figure 29. Large Signal Step Response Submit Documentation Feedback -135 10M 100M Figure 26. Open-Loop Frequency Response 20 mV/DIV 500 mV/DIV 90 45 0 FREQUENCY (Hz) 1V/DIV 135 CL = 100 pF Figure 25. Open-Loop Frequency Response 18 225 VS = 3V, 5V, 10V GAIN PHASE () 100 Figure 30. Small Signal Step Response Copyright (c) 2005-2015, Texas Instruments Incorporated Product Folder Links: LMP7701 LMP7702 LMP7704 LMP7701, LMP7702, LMP7704 www.ti.com SNOSAI9I - SEPTEMBER 2005 - REVISED NOVEMBER 2015 Typical Characteristics (continued) TA = 25C, VCM = VS/2, RL > 10 k (unless otherwise noted) 150 VS = 10V VS = 5V 140 100 OPEN LOOP GAIN (dB) INPUT REFERRED VOLTAGE NOISE (nV/ Hz) 120 80 VS = 3V 60 VS = 5V 40 130 120 RL = 10 k: 110 VS = 3V 100 90 80 20 0 1 10 RL = 2 k: 70 VS = 10V 100 1k 10k 60 500 100k 400 300 200 100 0 FREQUENCY (Hz) OUTPUT SWING FROM RAIL (mV) Figure 31. Input Voltage Noise vs Frequency Figure 32. Open Loop Gain vs Output Voltage Swing 50 50 RL = 10 k: RL = 10 k: 25C 40 125C 30 VOUT FROM RAIL (mV) VOUT FROM RAIL (mV) 40 -40C 20 10 0 2 4 6 8 10 30 25C 125C 20 10 0 12 -40C 2 4 6 8 10 12 SUPPLY VOLTAGE (V) SUPPLY VOLTAGE (V) Figure 33. Output Swing High vs Supply Voltage Figure 34. Output Swing Low vs Supply Voltage 100 100 RL = 2 k: 25C 25C 80 80 125C VOUT FROM RAIL (mV) VOUT FROM RAIL (mV) RL = 2 k: 60 -40C 40 20 0 2 4 6 8 10 12 125C 60 -40C 40 20 0 2 4 6 8 10 12 SUPPLY VOLTAGE (V) SUPPLY VOLTAGE (V) Figure 35. Output Swing High vs Supply Voltage Figure 36. Output Swing Low vs Supply Voltage Copyright (c) 2005-2015, Texas Instruments Incorporated Product Folder Links: LMP7701 LMP7702 LMP7704 Submit Documentation Feedback 19 LMP7701, LMP7702, LMP7704 SNOSAI9I - SEPTEMBER 2005 - REVISED NOVEMBER 2015 www.ti.com Typical Characteristics (continued) TA = 25C, VCM = VS/2, RL > 10 k (unless otherwise noted) 1 1 VS = 5V f = 1 kHz VS = 5V VO = 4.5 VPP RL = 100 k: RL = 100 k: 0.1 THD+N (%) 0.1 AV = +10 THD+N (%) AV = +10 0.01 0.01 AV = +1 AV = +1 0.001 10 100 1k 10k 0.001 0.001 100k 0.01 0.1 1 10 FREQUENCY (Hz) VOUT (V) Figure 37. THD+N vs Frequency Figure 38. THD+N vs Output Voltage 140 CROSSTALK REJECTION (dB) VS = 12V 120 VS = 5V VS = 3V 100 80 60 40 100 1k 10k 100k 1M FREQUENCY (Hz) Figure 39. Crosstalk Rejection Ratio vs Frequency (LMP7702/LMP7704) 20 Submit Documentation Feedback Copyright (c) 2005-2015, Texas Instruments Incorporated Product Folder Links: LMP7701 LMP7702 LMP7704 LMP7701, LMP7702, LMP7704 www.ti.com SNOSAI9I - SEPTEMBER 2005 - REVISED NOVEMBER 2015 8 Detailed Description 8.1 Overview The LMP770x are single, dual, and quad low offset voltage, rail-to-rail input and output precision amplifiers each with a CMOS input stage and wide supply voltage range of 2.7V to 12V. The LMP770x have a very low input bias current of only 200 fA at room temperature. The wide supply voltage range of 2.7V to 12V over the extensive temperature range of -40C to 125C makes the LMP770x excellent choices for low voltage precision applications with extensive temperature requirements. The LMP770x have only 37 V of typical input referred offset voltage and this offset is specified to be less than 500 V for the single and 520 V for the dual and quad, over temperature. This minimal offset voltage allows more accurate signal detection and amplification in precision applications. The low input bias current of only 200 fA along with the low input referred voltage noise of 9 nV/Hz gives the LMP770x superiority for use in sensor applications. Lower levels of noise from the LMP770x mean of better signal fidelity and a higher signal-to-noise ratio. Texas Instruments is heavily committed to precision amplifiers and the market segment they serve. Technical support and extensive characterization data is available for sensitive applications or applications with a constrained error budget. The LMP7701 is offered in the space saving 5-Pin SOT-23 and 8-Pin SOIC package. The LMP7702 comes in the 8-Pin SOIC and 8-Pin VSSOP package. The LMP7704 is offered in the 14-Pin SOIC and 14-Pin TSSOP package. These small packages are ideal solutions for area constrained PC boards and portable electronics. 8.2 Functional Block Diagram OUT - V 5 1 2 + IN+ + V 3 4 IN- Figure 40. Functional Block Diagram (LMP7701) 8.3 Feature Description 8.3.1 Capacitive Load The LMP770x can each be connected as a non-inverting unity gain follower. This configuration is the most sensitive to capacitive loading. The combination of a capacitive load placed on the output of an amplifier along with the amplifier's output impedance creates a phase lag which in turn reduces the phase margin of the amplifier. If the phase margin is significantly reduced, the response will be either underdamped or it will oscillate. To drive heavier capacitive loads, an isolation resistor, RISO, in Figure 41 should be used. By using this isolation resistor, the capacitive load is isolated from the amplifier's output, and hence, the pole caused by CL is no longer in the feedback loop. The larger the value of RISO, the more stable the output voltage will be. If values of RISO are sufficiently large, the feedback loop will be stable, independent of the value of CL. However, larger values of RISO result in reduced output swing and reduced output current drive. Copyright (c) 2005-2015, Texas Instruments Incorporated Product Folder Links: LMP7701 LMP7702 LMP7704 Submit Documentation Feedback 21 LMP7701, LMP7702, LMP7704 SNOSAI9I - SEPTEMBER 2005 - REVISED NOVEMBER 2015 www.ti.com Feature Description (continued) Figure 41. Isolating Capacitive Load 8.3.2 Input Capacitance CMOS input stages inherently have low input bias current and higher input referred voltage noise. The LMP770x enhance this performance by having the low input bias current of only 200 fA, as well as, a very low input referred voltage noise of 9 nV/Hz. To achieve this a larger input stage has been used. This larger input stage increases the input capacitance of the LMP770x. The typical value of this input capacitance, CIN, for the LMP770x is 25 pF. The input capacitance will interact with other impedances such as gain and feedback resistors, which are seen on the inputs of the amplifier, to form a pole. This pole will have little or no effect on the output of the amplifier at low frequencies and DC conditions, but will play a bigger role as the frequency increases. At higher frequencies, the presence of this pole will decrease phase margin and will also cause gain peaking. To compensate for the input capacitance, care must be taken in choosing the feedback resistors. In addition to being selective in picking values for the feedback resistor, a capacitor can be added to the feedback path to increase stability. The DC gain of the circuit shown in Figure 42 is simply -R2/R1. CF R2 R1 + VIN CIN + + - - AV = - VOUT VIN =- VOUT R2 R1 Figure 42. Compensating for Input Capacitance For the time being, ignore CF. The AC gain of the circuit in Figure 42 can be calculated as follows: VOUT -R2/R1 (s) = VIN s2 s + 1+ A0 R 1 A0 C R + R R 2 (c) 1 (c) IN 2 (1) (c) (c) This equation is rearranged to find the location of the two poles: 22 1 1 + r R1 R2 1 1 + R2 (c) R1 Submit Documentation Feedback (c) -1 P1,2 = 2CIN 2 - 4 A0CIN R2 (2) Copyright (c) 2005-2015, Texas Instruments Incorporated Product Folder Links: LMP7701 LMP7702 LMP7704 LMP7701, LMP7702, LMP7704 www.ti.com SNOSAI9I - SEPTEMBER 2005 - REVISED NOVEMBER 2015 Feature Description (continued) As shown in Equation 2, as values of R1 and R2 are increased, the magnitude of the poles is reduced, which in turn decreases the bandwidth of the amplifier. Whenever possible, it is best to choose smaller feedback resistors. Figure 43 shows the effect of the feedback resistor on the bandwidth of the LMP770x. 2 VS = 5V CF = 0 pF NORMALIZED GAIN (dB) 0 AV = -1 -2 R1 = R2 = 100 k: -4 R1 = R2 = 30 k: -6 R1 = R2 = 10 k: -8 R1 = R2 = 1 k: -10 1k 10k 100k 1M 10M FREQUENCY (Hz) Figure 43. Closed-Loop Gain vs Frequency Equation 2 has two poles. In most cases, it is the presence of pairs of poles that causes gain peaking. To eliminate this effect, the poles should be placed in Butterworth position, because poles in Butterworth position do not cause gain peaking. To achieve a Butterworth pair, the quantity under the square root in Equation 2 should be set to equal -1. Using this fact and the relation between R1 and R2, R2 = -AV R1, the optimum value for R1 can be found. This is shown in Equation 3. If R1 is chosen to be larger than this optimum value, gain peaking will occur. R1 < (1 - AV) 2 2A0AVCIN (3) In Figure 42, CF is added to compensate for input capacitance and to increase stability. Additionally, CF reduces or eliminates the gain peaking that can be caused by having a larger feedback resistor. Figure 44 shows how CF reduces gain peaking. 2 CF = 0 pF NORMALIZED GAIN (dB) 0 CF = 1 pF -2 CF = 5 pF -4 CF = 3 pF -6 VS = 5V -8 R1 = R2 = 100 k: AV = -1 -10 1k 10k 100k 1M 10M FREQUENCY (Hz) Figure 44. Closed-Loop Gain vs Frequency With Compensation Copyright (c) 2005-2015, Texas Instruments Incorporated Product Folder Links: LMP7701 LMP7702 LMP7704 Submit Documentation Feedback 23 LMP7701, LMP7702, LMP7704 SNOSAI9I - SEPTEMBER 2005 - REVISED NOVEMBER 2015 www.ti.com Feature Description (continued) 8.3.3 Diodes Between the Inputs The LMP770x have a set of anti-parallel diodes between the input pins, as shown in Figure 45. These diodes are present to protect the input stage of the amplifier. At the same time, they limit the amount of differential input voltage that is allowed on the input pins. A differential signal larger than one diode voltage drop might damage the diodes. The differential signal between the inputs needs to be limited to 300 mV or the input current needs to be limited to 10 mA. V V D1 ESD IN + + R1 ESD R2 + IN ESD ESD D2 V - - - V Figure 45. Input of LMP7701 24 Submit Documentation Feedback Copyright (c) 2005-2015, Texas Instruments Incorporated Product Folder Links: LMP7701 LMP7702 LMP7704 LMP7701, LMP7702, LMP7704 www.ti.com SNOSAI9I - SEPTEMBER 2005 - REVISED NOVEMBER 2015 8.4 Device Functional Modes 8.4.1 Precision Current Source The LMP770x can each be used as a precision current source in many different applications. Figure 46 shows a typical precision current source. This circuit implements a precision voltage controlled current source. Amplifier A1 is a differential amplifier that uses the voltage drop across RS as the feedback signal. Amplifier A2 is a buffer that eliminates the error current from the load side of the RS resistor that would flow in the feedback resistor if it were connected to the load side of the RS resistor. In general, the circuit is stable as long as the closed loop bandwidth of amplifier A2 is greater then the closed loop bandwidth of amplifier A1. If A1 and A2 are the same type of amplifiers, then the feedback around A1 will reduce its bandwidth compared to A2. R R V1 V + - RS I = (V2 V1) A1 RS + V - V + Z LOAD - R R V2 A2 + - V Figure 46. Precision Current Source The equation for output current can be derived as shown in Equation 4. V2R R+R + (V0 IRS)R R+R = V1R R+R + V0R R+R (4) Solving for the current I results in the Equation 5. V2 V1 I= R S (5) 9 Application and Implementation NOTE Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI's customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality. 9.1 Application Information 9.1.1 Low Input Voltage Noise The LMP770x have the very low input voltage noise of 9 nV/Hz. This input voltage noise can be further reduced by placing N amplifiers in parallel as shown in Figure 47. The total voltage noise on the output of this circuit is divided by the square root of the number of amplifiers used in this parallel combination. This is because each individual amplifier acts as an independent noise source, and the average noise of independent sources is the quadrature sum of the independent sources divided by the number of sources. For N identical amplifiers, this means: Copyright (c) 2005-2015, Texas Instruments Incorporated Product Folder Links: LMP7701 LMP7702 LMP7704 Submit Documentation Feedback 25 LMP7701, LMP7702, LMP7704 SNOSAI9I - SEPTEMBER 2005 - REVISED NOVEMBER 2015 www.ti.com Application Information (continued) REDUCED INPUT VOLTAGE NOISE = 1 N en1+en2+ = 1 N Nen = = 1 2 2 2 2 +enN N en N en N (6) Figure 47 shows a schematic of this input voltage noise reduction circuit. Typical resistor values are: RG = 10, RF = 1 k, and RO = 1 k. + V + - VIN VOUT - RG RO V RF + V + RG V - RO RF + V + RG V - RO RF + V + RG V - RO RF Figure 47. Noise Reduction Circuit 9.1.2 Total Noise Contribution The LMP770x have very low input bias current, very low input current noise, and very low input voltage noise. As a result, these amplifiers are ideal choices for circuits with high impedance sensor applications. Figure 48 shows the typical input noise of the LMP770x as a function of source resistance where: en denotes the input referred voltage noise ei is the voltage drop across source resistance due to input referred current noise or ei = RS * in et shows the thermal noise of the source resistance eni shows the total noise on the input. Where: eni = 26 2 2 2 en + ei + et Submit Documentation Feedback Copyright (c) 2005-2015, Texas Instruments Incorporated Product Folder Links: LMP7701 LMP7702 LMP7704 LMP7701, LMP7702, LMP7704 www.ti.com SNOSAI9I - SEPTEMBER 2005 - REVISED NOVEMBER 2015 Application Information (continued) The input current noise of the LMP770x is so low that it will not become the dominant factor in the total noise unless source resistance exceeds 300 M, which is an unrealistically high value. As is evident in Figure 48, at lower RS values, total noise is dominated by the amplifier's input voltage noise. Once RS is larger than a few kilo-Ohms, then the dominant noise factor becomes the thermal noise of RS. As mentioned before, the current noise will not be the dominant noise factor for any practical application. VOLTAGE NOISE DENSITY (nV/ Hz) 1000 100 eni en 10 et ei 1 0.1 10 10k 1k 100 1M 100k 10M RS (:) Figure 48. Total Input Noise 9.2 Typical Application + V pH ELECTRODE TEMPERATURE 0.01 PF 0.01 PF 0.1 PF 0.1 PF 10 PF 10 PF + 75: V 1 PF + 1 A1 R2 10 k: R1 10 k: - V+ + V VD + V R3 10 k: R4 10 k: VA + CH0 - VOUT A2 CH1 + RT + V VOFFSET = 0.5012V LM35 -V+ 2 3 LM4140A 6 R5 10 k: - ADC12034 V R6 3.3 k: 1,4,7,8 AGND VREFVREF+ DGND pH ELECTRODE Figure 49. pH Measurement Circuit Copyright (c) 2005-2015, Texas Instruments Incorporated Product Folder Links: LMP7701 LMP7702 LMP7704 Submit Documentation Feedback 27 LMP7701, LMP7702, LMP7704 SNOSAI9I - SEPTEMBER 2005 - REVISED NOVEMBER 2015 www.ti.com Typical Application (continued) 9.2.1 Design Requirements pH electrodes are very high impedance sensors. As their name indicates, they are used to measure the pH of a solution. They usually do this by generating an output voltage which is proportional to the pH of the solution. pH electrodes are calibrated so that they have zero output for a neutral solution, pH = 7, and positive and negative voltages for acidic or alkaline solutions. This means that the output of a pH electrode is bipolar and must be level shifted to be used in a single supply system. The rate of change of this voltage is usually shown in mV/pH and is different for different pH sensors. Temperature is also an important factor in a pH electrode reading. The output voltage of the senor will change with temperature. 9.2.2 Detailed Design Procedure Many sensors have high source impedances that may range up to 10 M. The output signal of sensors often needs to be amplified or otherwise conditioned by means of an amplifier. The input bias current of this amplifier can load the sensor's output and cause a voltage drop across the source resistance as shown in Figure 50, where VIN+ = VS - IBIAS*RS The last term, IBIAS*RS, shows the voltage drop across RS. To prevent errors introduced to the system due to this voltage, an op amp with very low input bias current must be used with high impedance sensors. This is to keep the error contribution by IBIAS*RS less than the input voltage noise of the amplifier, so that it will not become the dominant noise factor. SENSOR + V IB RS VIN+ + VS + - - V Figure 50. Noise Due to IBIAS Figure 51 shows a typical output voltage spectrum of a pH electrode. The exact values of output voltage will be different for different sensors. In this example, the pH electrode has an output voltage of 59.15 mV/pH at 25C. ACID 2 0 +414 mV BASE 4 7 10 +177 mV 0 mV -177 mV 12 14 pH -414 mV Figure 51. Output Voltage of a pH Electrode The temperature dependence of a typical pH electrode is shown in Figure 52. As is evident, the output voltage changes with changes in temperature. The schematic shown in Figure 49 is a typical circuit which can be used for pH measurement. The LM35 is a precision integrated circuit temperature sensor. This sensor is differentiated from similar products because it has an output voltage linearly proportional to Celcius measurement, without converting the temperature to Kelvin. The LM35 is used to measure the temperature of the solution and feeds this reading to the Analog to Digital Converter, ADC. This information is used by the ADC to calculate the temperature effects on the pH readings. The LM35 needs to have a resistor, RT in Figure 49, to -V+ to be able to read temperatures less than 0C. RT is not needed if temperatures are not expected to be less than zero. 28 Submit Documentation Feedback Copyright (c) 2005-2015, Texas Instruments Incorporated Product Folder Links: LMP7701 LMP7702 LMP7704 LMP7701, LMP7702, LMP7704 www.ti.com SNOSAI9I - SEPTEMBER 2005 - REVISED NOVEMBER 2015 Typical Application (continued) The output of pH electrodes is usually large enough that it does not require much amplification; however, due to the very high impedance, the output of a pH electrode needs to be buffered before it can go to an ADC. Because most ADCs are operated on single supply, the output of the pH electrode also needs to be level shifted. Amplifier A1 buffers the output of the pH electrode with a moderate gain of +2, while A2 provides the level shifting. VOUT at the output of A2 is given by: VOUT = -2VpH + 1.024V. The LM4140A is a precision, low noise, voltage reference used to provide the level shift needed. The ADC used in this application is the ADC12032 which is a 12-bit, 2 channel converter with multiplexers on the inputs and a serial output. The 12-bit ADC enables users to measure pH with an accuracy of 0.003 of a pH unit. Adequate power supply bypassing and grounding is extremely important for ADCs. Recommended bypass capacitors are shown in Figure 49. It is common to share power supplies between different components in a circuit. To minimize the effects of power supply ripples caused by other components, the op amps must have bypass capacitors on the supply pins. Using the same value capacitors as those used with the ADC are ideal. The combination of these three values of capacitors ensures that AC noise present on the power supply line is grounded and does not interfere with the amplifiers' signal. 9.2.3 Application Curves mV 600 10C (74.04 mV/pH) 500 400 25C (59.15 mV/pH) 300 200 100 2 4 12 10 8 14 pH 0 -100 1 3 5 7 9 11 13 -200 -300 -400 -500 0C (54.20 mV/pH) -600 Figure 52. Temperature Dependence of a pH Electrode Copyright (c) 2005-2015, Texas Instruments Incorporated Product Folder Links: LMP7701 LMP7702 LMP7704 Submit Documentation Feedback 29 LMP7701, LMP7702, LMP7704 SNOSAI9I - SEPTEMBER 2005 - REVISED NOVEMBER 2015 www.ti.com 10 Power Supply Recommendations For proper operation, the power supplies must be decoupled. For supply decoupling, TI recommends placing 10-nF to 1-F capacitors as close as possible to the operational-amplifier power supply pins. For single supply configurations, place a capacitor between the V+ and V- supply pins. For dual supply configurations, place one capacitor between V+ and ground, and place a second capacitor between V- and ground. Bypass capacitors must have a low ESR of less than 0.1 . 30 Submit Documentation Feedback Copyright (c) 2005-2015, Texas Instruments Incorporated Product Folder Links: LMP7701 LMP7702 LMP7704 LMP7701, LMP7702, LMP7704 www.ti.com SNOSAI9I - SEPTEMBER 2005 - REVISED NOVEMBER 2015 11 Layout 11.1 Layout Guidelines Take care to minimize the loop area formed by the bypass capacitor connection between supply pins and ground. A ground plane underneath the device is recommended; any bypass components to ground should have a nearby via to the ground plane. The optimum bypass capacitor placement is closest to the corresponding supply pin. Use of thicker traces from the bypass capacitors to the corresponding supply pins will lower the power supply inductance and provide a more stable power supply. The feedback components should be placed as close to the device as possible to minimize stray parasitics. 11.2 Layout Example +3.3V +3 +3.3V GND .3 V +3.3V 2 GND +3 G ND .3 V 1 +3.3V 1 VOUT 5 +3.3V 2 GND VOUT 4 V- 3 V+ 1 V+ 2 VOUT 2 VOUT 1 V- 1 V- V+ 2 +3.3V +3.3V V+ 2 V+ 1 GND GND GND 1 GND 2 V- Figure 53. LMP7701 Example Layout Copyright (c) 2005-2015, Texas Instruments Incorporated Product Folder Links: LMP7701 LMP7702 LMP7704 Submit Documentation Feedback 31 LMP7701, LMP7702, LMP7704 SNOSAI9I - SEPTEMBER 2005 - REVISED NOVEMBER 2015 www.ti.com 12 Device and Documentation Support 12.1 Related Links The table below lists quick access links. Categories include technical documents, support and community resources, tools and software, and quick access to sample or buy. Table 1. Related Links PARTS PRODUCT FOLDER SAMPLE AND BUY TECHNICAL DOCUMENTS TOOLS AND SOFTWARE SUPPORT AND COMMUNITY LMP7701 Click here Click here Click here Click here Click here LMP7702 Click here Click here Click here Click here Click here LMP7704 Click here Click here Click here Click here Click here 12.2 Community Resources The following links connect to TI community resources. Linked contents are provided "AS IS" by the respective contributors. They do not constitute TI specifications and do not necessarily reflect TI's views; see TI's Terms of Use. TI E2ETM Online Community TI's Engineer-to-Engineer (E2E) Community. Created to foster collaboration among engineers. At e2e.ti.com, you can ask questions, share knowledge, explore ideas and help solve problems with fellow engineers. Design Support TI's Design Support Quickly find helpful E2E forums along with design support tools and contact information for technical support. 12.3 Trademarks LMP, E2E are trademarks of Texas Instruments. All other trademarks are the property of their respective owners. 12.4 Electrostatic Discharge Caution These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. 12.5 Glossary SLYZ022 -- TI Glossary. This glossary lists and explains terms, acronyms, and definitions. 13 Mechanical, Packaging, and Orderable Information The following pages include mechanical, packaging, and orderable information. This information is the most current data available for the designated devices. This data is subject to change without notice and revision of this document. For browser-based versions of this data sheet, refer to the left-hand navigation. 32 Submit Documentation Feedback Copyright (c) 2005-2015, Texas Instruments Incorporated Product Folder Links: LMP7701 LMP7702 LMP7704 PACKAGE OPTION ADDENDUM www.ti.com 10-Dec-2020 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan (2) Lead finish/ Ball material MSL Peak Temp Op Temp (C) Device Marking (3) (4/5) (6) LMP7701MA/NOPB ACTIVE SOIC D 8 95 RoHS & Green SN Level-1-260C-UNLIM LMP77 01MA LMP7701MAX/NOPB ACTIVE SOIC D 8 2500 RoHS & Green SN Level-1-260C-UNLIM LMP77 01MA LMP7701MF NRND SOT-23 DBV 5 1000 Non-RoHS & Non-Green Call TI Call TI -40 to 125 AC2A LMP7701MF/NOPB ACTIVE SOT-23 DBV 5 1000 RoHS & Green SN Level-1-260C-UNLIM -40 to 125 AC2A LMP7701MFX NRND SOT-23 DBV 5 3000 Non-RoHS & Non-Green Call TI Call TI -40 to 125 AC2A LMP7701MFX/NOPB ACTIVE SOT-23 DBV 5 3000 RoHS & Green SN Level-1-260C-UNLIM -40 to 125 AC2A LMP7702MA/NOPB ACTIVE SOIC D 8 95 RoHS & Green SN Level-1-260C-UNLIM LMP77 02MA LMP7702MAX/NOPB ACTIVE SOIC D 8 2500 RoHS & Green SN Level-1-260C-UNLIM LMP77 02MA LMP7702MM NRND VSSOP DGK 8 1000 Non-RoHS & Non-Green Call TI Call TI -40 to 125 AA3A LMP7702MM/NOPB ACTIVE VSSOP DGK 8 1000 RoHS & Green SN Level-1-260C-UNLIM -40 to 125 AA3A LMP7702MMX/NOPB ACTIVE VSSOP DGK 8 3500 RoHS & Green SN Level-1-260C-UNLIM -40 to 125 AA3A LMP7704MA/NOPB ACTIVE SOIC D 14 55 RoHS & Green SN Level-1-260C-UNLIM LMP7704 MA LMP7704MAX/NOPB ACTIVE SOIC D 14 2500 RoHS & Green SN Level-1-260C-UNLIM LMP7704 MA LMP7704MT NRND TSSOP PW 14 94 Non-RoHS & Non-Green Call TI Call TI -40 to 125 LMP77 04MT LMP7704MT/NOPB ACTIVE TSSOP PW 14 94 RoHS & Non-Green SN Level-1-260C-UNLIM -40 to 125 LMP77 04MT LMP7704MTX/NOPB ACTIVE TSSOP PW 14 2500 RoHS & Non-Green SN Level-1-260C-UNLIM -40 to 125 LMP77 04MT (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. Addendum-Page 1 Samples PACKAGE OPTION ADDENDUM www.ti.com 10-Dec-2020 LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may reference these types of products as "Pb-Free". RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption. Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of <=1000ppm threshold. Antimony trioxide based flame retardants must also meet the <=1000ppm threshold requirement. (3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. (4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device. (5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Device Marking for that device. (6) Lead finish/Ball material - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead finish/Ball material values may wrap to two lines if the finish value exceeds the maximum column width. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis. Addendum-Page 2 PACKAGE MATERIALS INFORMATION www.ti.com 29-Sep-2019 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant LMP7701MAX/NOPB SOIC D 8 2500 330.0 12.4 6.5 5.4 2.0 8.0 12.0 Q1 LMP7701MF SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LMP7701MF/NOPB SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LMP7701MFX SOT-23 DBV 5 3000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LMP7701MFX/NOPB SOT-23 DBV 5 3000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LMP7702MAX/NOPB SOIC D 8 2500 330.0 12.4 6.5 5.4 2.0 8.0 12.0 Q1 LMP7702MM VSSOP DGK 8 1000 178.0 12.4 5.3 3.4 1.4 8.0 12.0 Q1 LMP7702MM/NOPB VSSOP DGK 8 1000 178.0 12.4 5.3 3.4 1.4 8.0 12.0 Q1 LMP7702MMX/NOPB VSSOP DGK 8 3500 330.0 12.4 5.3 3.4 1.4 8.0 12.0 Q1 LMP7704MAX/NOPB SOIC D 14 2500 330.0 16.4 6.5 9.35 2.3 8.0 16.0 Q1 LMP7704MTX/NOPB TSSOP PW 14 2500 330.0 12.4 6.95 5.6 1.6 8.0 12.0 Q1 Pack Materials-Page 1 PACKAGE MATERIALS INFORMATION www.ti.com 29-Sep-2019 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) LMP7701MAX/NOPB SOIC D 8 2500 367.0 367.0 35.0 LMP7701MF SOT-23 DBV 5 1000 210.0 185.0 35.0 LMP7701MF/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.0 LMP7701MFX SOT-23 DBV 5 3000 210.0 185.0 35.0 LMP7701MFX/NOPB SOT-23 DBV 5 3000 210.0 185.0 35.0 LMP7702MAX/NOPB SOIC D 8 2500 367.0 367.0 35.0 LMP7702MM VSSOP DGK 8 1000 210.0 185.0 35.0 LMP7702MM/NOPB VSSOP DGK 8 1000 210.0 185.0 35.0 LMP7702MMX/NOPB VSSOP DGK 8 3500 367.0 367.0 35.0 LMP7704MAX/NOPB SOIC D 14 2500 367.0 367.0 35.0 LMP7704MTX/NOPB TSSOP PW 14 2500 367.0 367.0 35.0 Pack Materials-Page 2 PACKAGE OUTLINE DBV0005A SOT-23 - 1.45 mm max height SCALE 4.000 SMALL OUTLINE TRANSISTOR C 3.0 2.6 1.75 1.45 PIN 1 INDEX AREA 1 0.1 C B A 5 2X 0.95 1.9 1.45 0.90 3.05 2.75 1.9 2 4 0.5 5X 0.3 0.2 3 (1.1) C A B 0.15 TYP 0.00 0.25 GAGE PLANE 8 TYP 0 0.22 TYP 0.08 0.6 TYP 0.3 SEATING PLANE 4214839/E 09/2019 NOTES: 1. All linear dimensions are in millimeters. Any dimensions in parenthesis are for reference only. Dimensioning and tolerancing per ASME Y14.5M. 2. This drawing is subject to change without notice. 3. Refernce JEDEC MO-178. 4. Body dimensions do not include mold flash, protrusions, or gate burrs. Mold flash, protrusions, or gate burrs shall not exceed 0.15 mm per side. www.ti.com EXAMPLE BOARD LAYOUT DBV0005A SOT-23 - 1.45 mm max height SMALL OUTLINE TRANSISTOR PKG 5X (1.1) 1 5 5X (0.6) SYMM (1.9) 2 2X (0.95) 3 4 (R0.05) TYP (2.6) LAND PATTERN EXAMPLE EXPOSED METAL SHOWN SCALE:15X SOLDER MASK OPENING METAL SOLDER MASK OPENING METAL UNDER SOLDER MASK EXPOSED METAL EXPOSED METAL 0.07 MIN ARROUND 0.07 MAX ARROUND NON SOLDER MASK DEFINED (PREFERRED) SOLDER MASK DEFINED SOLDER MASK DETAILS 4214839/E 09/2019 NOTES: (continued) 5. Publication IPC-7351 may have alternate designs. 6. Solder mask tolerances between and around signal pads can vary based on board fabrication site. www.ti.com EXAMPLE STENCIL DESIGN DBV0005A SOT-23 - 1.45 mm max height SMALL OUTLINE TRANSISTOR PKG 5X (1.1) 1 5 5X (0.6) SYMM (1.9) 2 2X(0.95) 4 3 (R0.05) TYP (2.6) SOLDER PASTE EXAMPLE BASED ON 0.125 mm THICK STENCIL SCALE:15X 4214839/E 09/2019 NOTES: (continued) 7. Laser cutting apertures with trapezoidal walls and rounded corners may offer better paste release. IPC-7525 may have alternate design recommendations. 8. Board assembly site may have different recommendations for stencil design. www.ti.com PACKAGE OUTLINE D0008A SOIC - 1.75 mm max height SCALE 2.800 SMALL OUTLINE INTEGRATED CIRCUIT C SEATING PLANE .228-.244 TYP [5.80-6.19] A .004 [0.1] C PIN 1 ID AREA 6X .050 [1.27] 8 1 2X .150 [3.81] .189-.197 [4.81-5.00] NOTE 3 4X (0 -15 ) 4 5 B 8X .012-.020 [0.31-0.51] .010 [0.25] C A B .150-.157 [3.81-3.98] NOTE 4 .069 MAX [1.75] .005-.010 TYP [0.13-0.25] 4X (0 -15 ) SEE DETAIL A .010 [0.25] .004-.010 [0.11-0.25] 0 -8 .016-.050 [0.41-1.27] DETAIL A (.041) [1.04] TYPICAL 4214825/C 02/2019 NOTES: 1. Linear dimensions are in inches [millimeters]. Dimensions in parenthesis are for reference only. Controlling dimensions are in inches. Dimensioning and tolerancing per ASME Y14.5M. 2. This drawing is subject to change without notice. 3. This dimension does not include mold flash, protrusions, or gate burrs. Mold flash, protrusions, or gate burrs shall not exceed .006 [0.15] per side. 4. This dimension does not include interlead flash. 5. Reference JEDEC registration MS-012, variation AA. www.ti.com EXAMPLE BOARD LAYOUT D0008A SOIC - 1.75 mm max height SMALL OUTLINE INTEGRATED CIRCUIT 8X (.061 ) [1.55] SYMM SEE DETAILS 1 8 8X (.024) [0.6] 6X (.050 ) [1.27] SYMM 5 4 (R.002 ) TYP [0.05] (.213) [5.4] LAND PATTERN EXAMPLE EXPOSED METAL SHOWN SCALE:8X METAL SOLDER MASK OPENING EXPOSED METAL .0028 MAX [0.07] ALL AROUND SOLDER MASK OPENING METAL UNDER SOLDER MASK EXPOSED METAL .0028 MIN [0.07] ALL AROUND SOLDER MASK DEFINED NON SOLDER MASK DEFINED SOLDER MASK DETAILS 4214825/C 02/2019 NOTES: (continued) 6. Publication IPC-7351 may have alternate designs. 7. Solder mask tolerances between and around signal pads can vary based on board fabrication site. www.ti.com EXAMPLE STENCIL DESIGN D0008A SOIC - 1.75 mm max height SMALL OUTLINE INTEGRATED CIRCUIT 8X (.061 ) [1.55] SYMM 1 8 8X (.024) [0.6] 6X (.050 ) [1.27] SYMM 5 4 (R.002 ) TYP [0.05] (.213) [5.4] SOLDER PASTE EXAMPLE BASED ON .005 INCH [0.125 MM] THICK STENCIL SCALE:8X 4214825/C 02/2019 NOTES: (continued) 8. Laser cutting apertures with trapezoidal walls and rounded corners may offer better paste release. IPC-7525 may have alternate design recommendations. 9. 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