LM6142 and LM6144 17 MHz Rail-to-Rail Input-Output Operational Amplifiers General Description Features Using patent pending new circuit topologies, the LM6142/44 provides new levels of performance in applications where low voltage supplies or power limitations previously made compromise necessary. Operating on supplies of 1.8V to over 24V, the LM6142/44 is an excellent choice for battery operated systems, portable instrumentation and others. The greater than rail-to-rail input voltage range eliminates concern over exceeding the common-mode voltage range. The rail-to-rail output swing provides the maximum possible dynamic range at the output. This is particularly important when operating on low supply voltages. At VS = 5V. Typ unless noted. n Rail-to-rail input CMVR -0.25V to 5.25V n Rail-to-rail output swing 0.005V to 4.995V n Wide gain-bandwidth: 17 MHz at 50 kHz (typ) n Slew rate: Small signal, 5V/s Large signal, 30V/s n Low supply current 650 A/Amplifier n Wide supply range 1.8V to 24V n CMRR 107 dB n Gain 108 dB with RL = 10k n PSRR 87 dB High gain-bandwidth with 650 A/Amplifier supply current opens new battery powered applications where previous higher power consumption reduced battery life to unacceptable levels. The ability to drive large capacitive loads without oscillating functionally removes this common problem. Applications n n n n n Battery operated instrumentation Depth sounders/fish finders Barcode scanners Wireless communications Rail-to-rail in-out instrumentation amps Connection Diagrams 8-Pin CDIP 8-Pin DIP/SO DS012057-1 Top View DS012057-14 Top View 14-Pin DIP/SO DS012057-2 Top View (c) 2000 National Semiconductor Corporation DS012057 www.national.com LM6142 l and LM6144 17 MHz Rail-to-Rail Input-Output Operational Amplifiers August 2000 LM6142 and LM6144 Absolute Maximum Ratings (Note 1) Storage Temp. Range Junction Temperature (Note 4) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. ESD Tolerance (Note 2) Differential Input Voltage Voltage at Input/Output Pin Supply Voltage (V+ - V-) Current at Input Pin Current at Output Pin (Note 3) Current at Power Supply Pin Lead Temperature (soldering, 10 sec) -65C to +150C 150C Operating Ratings (Note 1) 2500V 15V (V+) + 0.3V, (V-) - 0.3V 35V 10 mA 25 mA 50 mA Supply Voltage Junction Temperature Range LM6142, LM6144 Thermal Resistance (JA) N Package, 8-Pin Molded DIP M Package, 8-Pin Surface Mount N Package, 14-Pin Molded DIP M Package, 14-Pin Surface Mount 1.8V V+ 24V -40C TJ +85C 115C/W 193C/W 81C/W 126C/W 260C 5.0V DC Electrical Characteristics Unless otherwise specified, all limits guaranteed for TJ = 25C, V+ = 5.0V, V- = 0V, VCM = VO = V+/2 and RL > 1 M to V+/2. Boldface limits apply at the temperature extremes. Symbol VOS TCVOS Parameter Conditions Input Offset Voltage LM6144AI LM6144BI Typ LM6142AI LM6142BI (Note 5) Limit Limit (Note 6) (Note 6) 0.3 Input Offset Voltage Units 1.0 2.5 mV 2.2 3.3 max 3 V/C Average Drift IB Input Bias Current 0V VCM 5V 170 250 180 280 526 IOS Input Offset Current RIN Input Resistance, CM CMRR Common Mode 3 0V VCM 4V 107 0V VCM 5V Power Supply 5V V+ 24V Input Common-Mode Large Signal RL = 10k Voltage Gain VO Output Swing 30 nA 80 80 max RL = 100k M 84 84 78 82 66 66 79 64 64 87 80 80 78 78 0 0 5.25 5.0 5.0 270 100 80 V/mV 70 33 25 min -0.25 Voltage Range AV 526 78 Rejection Ratio VCM 0.005 4.995 RL = 10k 0.02 RL = 2k 0.06 4.90 2 dB min V 0.01 0.01 V 0.013 0.013 max 4.98 4.98 V 4.93 4.93 min V max 4.97 www.national.com nA max 30 126 Rejection Ratio PSRR 300 V min 0.1 0.1 V 0.133 0.133 max 4.86 4.86 V 4.80 4.80 min (Continued) Unless otherwise specified, all limits guaranteed for TJ = 25C, V+ = 5.0V, V- = 0V, VCM = VO = V+/2 and RL > 1 M to V+/2. Boldface limits apply at the temperature extremes. Symbol ISC Parameter Output Short Conditions Sourcing LM6144AI LM6144BI Typ LM6142AI LM6142BI (Note 5) Limit Limit (Note 6) (Note 6) 13 Units 10 8 mA Circuit Current 4.9 4 min LM6142 35 35 mA 10 10 mA 5.3 5.3 min 35 35 max Sinking 24 mA max ISC Output Short 6 6 mA Circuit Current Sourcing 8 3 3 min LM6144 35 35 mA max Sinking 22 8 8 mA 4 4 min 35 35 mA max IS Supply Current Per Amplifier 650 800 800 A 880 880 max 5.0V AC Electrical Characteristics Unless Otherwise Specified, All Limits Guaranteed for TJ = 25C, V+ = 5.0V, V- = 0V, VCM = VO = V+/2 and RL > 1 M to VS/2. Boldface limits apply at the temperature extremes. Symbol Parameter SR Slew Rate GBW Gain-Bandwidth Product Conditions 8 Vp-p @ VCC 12V LM6144AI LM6144BI Typ LM6142AI LM6142BI (Note 5) Limit Limit (Note 6) (Note 6) 15 13 13 11 min 10 10 MHz 6 6 min 25 RS > 1 k m en f = 50 kHz 17 Units V/s Phase Margin 38 Deg Amp-to-Amp Isolation 130 dB Input-Referred f = 1 kHz 16 f = 1 kHz 0.22 f = 10 kHz, RL = 10 k, 0.003 Voltage Noise in Input-Referred Current Noise T.H.D. Total Harmonic Distortion 3 % www.national.com LM6142 and LM6144 5.0V DC Electrical Characteristics LM6142 and LM6144 2.7V DC Electrical Characteristics Unless Otherwise Specified, All Limits Guaranteed for TJ = 25C, V+ = 2.7V, V- = 0V, VCM = VO = V+/2 and RL > 1 M to V+/2. Boldface limits apply at the temperature extreme Symbol VOS IB IOS Parameter Conditions Input Offset Voltage LM6144AI LM6144BI Typ LM6142AI LM6142BI (Note 5) Limit Limit (Note 6) (Note 6) 1.8 2.5 mV 4.3 5 max 0.4 Input Bias Current 150 Input Offset Current 4 Units 250 300 nA 526 526 max 30 30 nA 80 80 max RIN Input Resistance CMRR Common Mode Rejection Ratio PSRR Power Supply VCM Input Common-Mode -0.25 0 0 V min Voltage Range 2.95 2.7 2.7 V max 128 M 0V VCM 1.8V 90 0V VCM 2.7V 76 dB min 3V V+ 5V 79 Rejection Ratio AV Large Signal VO Output Swing RL = 10k 55 V/mV Voltage Gain min RL = 100k 0.019 2.67 IS Supply Current Per Amplifier 510 0.08 0.08 V 0.112 0.112 max 2.66 2.66 V 2.25 2.25 min 800 800 A 880 880 max 2.7V AC Electrical Characteristics Unless Otherwise Specified, All Limits Guaranteed for TJ = 25C, V+ = 2.7V, V- = 0V, VCM = VO = V+/2 and RL > 1 M to V+/2. Boldface limits apply at the temperature extreme Symbol Parameter Conditions Typ (Note 5) LM6144BI LM6142AI LM6142BI Limit Limit (Note 6) (Note 6) Units GBW Gain-Bandwidth Product 9 MHz m Phase Margin 36 Deg Gm Gain Margin 6 dB www.national.com f = 50 kHz LM6144AI 4 Unless Otherwise Specified, All Limits Guaranteed for TJ = 25C, V+ = 24V, V- = 0V, VCM = VO = V+/2 and RL > 1 M to VS/2. Boldface limits apply at the temperature extreme Symbol VOS IB Parameter Conditions Input Offset Voltage LM6144AI LM6144BI Typ LM6142AI LM6142BI (Note 5) Limit Limit (Note 6) (Note 6) 1.3 Input Bias Current Units 2 3.8 mV 4.8 4.8 max 174 nA max IOS Input Offset Current 5 nA max RIN Input Resistance CMRR Common Mode Rejection Ratio PSRR Power Supply VCM Input Common-Mode -0.25 0 0 V min Voltage Range 24.25 24 24 V max 288 M 0V VCM 23V 114 0V VCM 24V 100 dB min 0V VCM 24V 87 Rejection Ratio AV Large Signal VO Output Swing RL = 10k 500 RL = 10 k 0.07 V/mV Voltage Gain min 23.85 IS GBW Supply Current Gain-Bandwidth Product Per Amplifier 750 f = 50 kHz 18 0.15 0.15 V 0.185 0.185 max 23.81 23.81 V 23.62 23.62 min 1100 1100 A 1150 1150 max MHz Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is intended to be functional, but specific performance is not guaranteed. For guaranteed specifications and the test conditions, see the Electrical Charactenstics. Note 2: Human body model, 1.5 k in series with 100 pF. Note 3: Applies to both single-supply and split-supply operation. Continuous short circuit operation at elevated ambient temperature can result in exceeding the maximum allowed junction temperature of 150C. Note 4: The maximum power dissipation is a function of TJ(max), JA, and TA. The maximum allowable power dissipation at any ambient temperature is PD = (Tj(max) - TA)/JA. All numbers apply for packages soldered directly into a PC board. Note 5: Typical values represent the most likely parametric norm. Note 6: All limits are guaranteed by testing or statistical analysis. Note 7: For guaranteed military specifications see military datasheet MNLM6142AM-X. 5 www.national.com LM6142 and LM6144 24V Electrical Characteristics LM6142 and LM6144 Typical Performance Characteristics Supply Current vs Supply Voltage TA = 25C, RL = 10 k Unless Otherwise Specified Offset Voltage vs Supply Voltage Bias Current vs Supply Voltage DS012057-15 Offset Voltage vs VCM DS012057-16 Offset Voltage vs VCM DS012057-18 Bias Current vs VCM DS012057-19 DS012057-21 DS012057-20 Bias Current vs VCM DS012057-22 Open-Loop Transfer Function DS012057-24 www.national.com Offset Voltage vs VCM Bias Current vs VCM Open-Loop Transfer Function DS012057-17 Open-Loop Transfer Function DS012057-25 6 DS012057-23 DS012057-26 LM6142 and LM6144 Typical Performance Characteristics TA = 25C, RL = 10 k Unless Otherwise Specified (Continued) Output Voltage vs Source Current Output Voltage vs Source Current DS012057-27 Output Voltage vs Sink Current Output Voltage vs Source Current DS012057-28 Output Voltage vs Sink Current DS012057-30 Gain and Phase vs Load DS012057-29 Output Voltage vs Sink Current DS012057-31 Gain and Phase vs Load DS012057-33 DS012057-32 Distortion + Noise vs Frequency DS012057-34 DS012057-35 7 www.national.com LM6142 and LM6144 Typical Performance Characteristics TA = 25C, RL = 10 k Unless Otherwise Specified (Continued) GBW vs Supply Open Loop Gain vs Load, 3V Supply Open Loop Gain vs Load, 5V Supply DS012057-36 DS012057-37 Open Loop Gain vs Load, 24V Supply DS012057-38 CMRR vs Frequency Unity Gain Freq vs VS DS012057-40 DS012057-41 DS012057-39 Crosstalk vs Frequency PSRR vs Frequency DS012057-43 DS012057-42 www.national.com Noise Voltage vs Frequency 8 DS012057-44 LM6142 and LM6144 Typical Performance Characteristics TA = 25C, RL = 10 k Unless Otherwise Specified (Continued) Noise Current vs Frequency NE vs R Source DS012057-12 DS012057-45 LM6142/44 Application Ideas Slew Rate vs VIN VS = 5V The LM6142 brings a new level of ease of use to opamp system design. With greater than rail-to-rail input voltage range concern over exceeding the common-mode voltage range is eliminated. Rail-to-rail output swing provides the maximum possible dynamic range at the output. This is particularly important when operating on low supply voltages. The high gain-bandwidth with low supply current opens new battery powered applications, where high power consumption, previously reduced battery life to unacceptable levels. To take advantage of these features, some ideas should be kept in mind. ENHANCED SLEW RATE Unlike most bipolar opamps, the unique phase reversal prevention/speed-up circuit in the input stage causes the slew rate to be very much a function of the input signal amplitude. DS012057-7 FIGURE 1. This effect is most noticeable at higher supply voltages and lower gains where incoming signals are likely to be large. This new input circuit also eliminates the phase reversal seen in many opamps when they are overdriven. This speed-up action adds stability to the system when driving large capacitive loads. Figure 2 shows how excess input signal, is routed around the input collector-base junctions, directly to the current mirrors. The LM6142/44 input stage converts the input voltage change to a current change. This current change drives the current mirrors through the collectors of Q1-Q2, Q3-Q4 when the input levels are normal. If the input signal exceeds the slew rate of the input stage, the differential input voltage rises above two diode drops. This excess signal bypasses the normal input transistors, (Q1-Q4), and is routed in correct phase through the two additional transistors, (Q5, Q6), directly into the current mirrors. This rerouting of excess signal allows the slew-rate to increase by a factor of 10 to 1 or more. (See Figure 1.) As the overdrive increases, the opamp reacts better than a conventional opamp. Large fast pulses will raise the slewrate to around 30V to 60V/s. DRIVING CAPACITIVE LOADS Capacitive loads decrease the phase margin of all opamps. This is caused by the output resistance of the amplifier and the load capacitance forming an R-C phase lag network. This can lead to overshoot, ringing and oscillation. Slew rate limiting can also cause additional lag. Most opamps with a fixed maximum slew-rate will lag further and further behind when driving capacitive loads even though the differential input voltage raises. With the LM6142, the lag causes the slew rate to raise. The increased slew-rate keeps the output following the input much better. This effectively reduces phase lag. After the output has caught up with the input, the differential input voltage drops down and the amplifier settles rapidly. 9 www.national.com LM6142 and LM6144 LM6142/44 Application Ideas (Continued) DS012057-6 FIGURE 2. These features allow the LM6142 to drive capacitive loads as large as 1000 pF at unity gain and not oscillate. The scope photos (Figure 3 and Figure 4) above show the LM6142 driving a l000 pF load. In Figure 3, the upper trace is with no capacitive load and the lower trace is with a 1000 pF load. Here we are operating on 12V supplies with a 20 Vp-p pulse. Excellent response is obtained with a Cf of l0 pF. In Figure 4, the supplies have been reduced to 2.5V, the pulse is 4 Vp-p and Cf is 39 pF. The best value for the compensation capacitor is best established after the board layout is finished because the value is dependent on board stray capacity, the value of the feedback resistor, the closed loop gain and, to some extent, the supply voltage. Another effect that is common to all opamps is the phase shift caused by the feedback resistor and the input capacitance. This phase shift also reduces phase margin. This effect is taken care of at the same time as the effect of the capacitive load when the capacitor is placed across the feedback resistor. The circuit shown in Figure 5 was used for these scope photos. DS012057-9 FIGURE 4. DS012057-10 FIGURE 5. Typical Applications DS012057-8 FISH FINDER/ DEPTH SOUNDER. The LM6142/44 is an excellent choice for battery operated fish finders. The low supply current, high gain-bandwidth and full rail to rail output swing of the LM6142 provides an ideal combination for use in this and similar applications. FIGURE 3. www.national.com 10 LM6142 and LM6144 Typical Applications (Continued) ANALOG TO DIGITAL CONVERTER BUFFER The high capacitive load driving ability, rail-to-rail input and output range with the excellent CMR of 82 dB, make the LM6142/44 a good choice for buffering the inputs of A to D converters. 3 OPAMP INSTRUMENTATION AMP WITH RAIL-TO-RAIL INPUT AND OUTPUT Using the LM6144, a 3 opamp instrumentation amplifier with rail-to-rail inputs and rail to rail output can be made. These features make these instrumentation amplifiers ideal for single supply systems. Some manufacturers use a precision voltage divider array of 5 resistors to divide the common-mode voltage to get an input range of rail-to-rail or greater. The problem with this method is that it also divides the signal, so to even get unity gain, the amplifier must be run at high closed loop gains. This raises the noise and drift by the internal gain factor and lowers the input impedance. Any mismatch in these precision resistors reduces the CMR as well. Using the LM6144, all of these problems are eliminated. In this example, amplifiers A and B act as buffers to the differential stage (Figure 6). These buffers assure that the input impedance is over 100 M and they eliminate the requirement for precision matched resistors in the input stage. They also assure that the difference amp is driven from a voltage source. This is necessary to maintain the CMR set by the matching of R1-R2 with R3-R4. DS012057-13 FIGURE 6. The gain is set by the ratio of R2/R1 and R3 should equal R1 and R4 equal R2. Making R4 slightly smaller than R2 and adding a trim pot equal to twice the difference between R2 and R4 will allow the CMR to be adjusted for optimum. With both rail to rail input and output ranges, the inputs and outputs are only limited by the supply voltages. Remember that even with rail-to-rail output, the output can not swing past the supplies so the combined common mode voltage plus the signal should not be greater than the supplies or limiting will occur. SPICE MACROMODEL A SPICE macromodel of this and many other National Semiconductor opamps is available at no charge from the NSC Customer Response Group at 800-272-9959. Ordering Information Package 8-Pin Molded DIP Temperature Range Temperature Range Industrial Military -40C to +85C -55C to +125C LM6142AIN, LM6142BIN N08E 8-Pin Small Outline LM6142AIM, LM6142AIMX,LM6142BIM,LM6142BIMXLM6142BIMTX, 14-Pin Molded DIP 14-Pin Small Outline M08A LM6144AIN, LM6144BIN N14A LM6144AIM, LM6144AIMX,LM6144BIM,LM6144BIMX 8-Pin CDIP M14A LM6142AMJ-QML 11 NSC Drawing J08A www.national.com LM6142 and LM6144 Physical Dimensions inches (millimeters) unless otherwise noted 8-Pin Ceramic Sidebrazed Dual-In-Line Package Order Number LM6142AMJ-QML NS Package Number D08C 8-Pin Small Outline Package Order Number LM6142AIM, LM6142AIMX or LM6142BIM, LM6142BIMX NS Package Number M08A www.national.com 12 LM6142 and LM6144 Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 14-Pin Small Outline Package Order Number LM6144AIM, LM6144AIMX or LM6144BIM, LM6144BIMX NS Package Number M14A 8-Pin Molded Dual-In-Line Package Order Number LM6142AIN, LM6142BIN, LM6142BIMT or LM6142BIMTX NS Package Number N08E 13 www.national.com LM6142 l and LM6144 17 MHz Rail-to-Rail Input-Output Operational Amplifiers Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 14-Pin Molded Dual-In-Line Package Order Number LM6144AIN or LM6144BIN NS Package Number N14A LIFE SUPPORT POLICY NATIONAL'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. National Semiconductor Corporation Americas Tel: 1-800-272-9959 Fax: 1-800-737-7018 Email: support@nsc.com www.national.com National Semiconductor Europe Fax: +49 (0) 180-530 85 86 Email: europe.support@nsc.com Deutsch Tel: +49 (0) 69 9508 6208 English Tel: +44 (0) 870 24 0 2171 Francais Tel: +33 (0) 1 41 91 8790 2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. National Semiconductor Asia Pacific Customer Response Group Tel: 65-2544466 Fax: 65-2504466 Email: ap.support@nsc.com National Semiconductor Japan Ltd. Tel: 81-3-5639-7560 Fax: 81-3-5639-7507 National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications. National P/N LM6142 - Dual High Speed/Low Power 17 MHz Rail-to-Rail I/O Operational Amplifier See Audio Products Products > Analog - Amplifiers > Operational Amplifiers > Low Power > LM6142 LM6142 Product Folder Dual High Speed/Low Power 17 MHz Rail-to-Rail I/O Operational Amplifier See Also: LM6152 - improved bandwidth, slew rate, supply current, maximum voltage and input bias current. LMH6643 - IMPROVED BANDWIDTH, SLEW RATE, SUPPLY CURRENT, MAXIMUM VOLTAGE, INPUT BIAS CURRENT, LOWER PRICE, COMMON MODE INPUT RANGE INCLUDES GROUND Generic P/N 6142 General Description Features Package & Models Datasheet Parametric Table Samples & Pricing Design Tools Parametric Table Channels (Channels) 2 Maximum Supply Voltage (Volt) 24 Input Output Type R-R In and Out Offset Voltage, Max (mV) 1, 2.50 Bandwidth, typ (MHz) 17 Input Bias Current, Temp Max (nA) 526 Slew Rate, typ (Volts/usec) 25 Output Current, typ (mA) 8 Supply Current per Channel, typ (mA) .65 Voltage Noise, typ (nV/Hz) 16 Minimum Supply Voltage (Volt) 1.80 Shut down No Special Features - Datasheet Size in Date Kbytes Title LM6142 and LM6144 17 MHz Rail-to-Rail Input-Output Operational Amplifiers LM6142 and LM6144 17 MHz Rail-to-Rail Input-Output Operational Amplifiers (JAPANESE) LM6142 Mil-Aero Datasheet MNLM6142AM-X View Online Download 29401 Aug- View Online Kbytes 00 Download 634 Kbytes View Online Download 87 Kbytes View Online Download Receive via Email Receive via Email Receive via Email Receive via Email If you have trouble printing or viewing PDF file(s), see Printing Problems. Package Availability, Models, Samples & Pricing Part Number Package Models Status Samples & Electronic Orders Budgetary Pricing Std Pack Size Package Marking file:///H|/imaging/BITTING/cpl/20020808_1/08062002_10/NATL/08062002_HTML/LM6142.html (1 of 3) [09-Aug-2002 4:31:59 PM] National P/N LM6142 - Dual High Speed/Low Power 17 MHz Rail-to-Rail I/O Operational Amplifier Type Pins MSL SPICE IBIS Qty $US each 8 MSL Full LM6142A.MOD N/A production 24 Hour Samples Buy Now 1K+ $2.3500 rail of 95 [logo]2T LM614 2AIM SOIC NARROW 8 MSL Full LM6142B.MOD N/A production 24 Hour Samples Buy Now 1K+ $2.1000 rail of 95 [logo]2T LM614 2BIM LM6142AIMX SOIC NARROW 8 MSL Full LM6142A.MOD N/A production Buy Now 1K+ $2.3500 reel of 2500 [logo]2T LM614 2AIM LM6142BIMX SOIC NARROW 8 MSL Full LM6142B.MOD N/A production Buy Now 1K+ $2.1000 reel of 2500 [logo]2T LM614 2BIM LM6142AIN MDIP 8 MSL Full LM6142A.MOD N/A production Buy Now 1K+ $2.3500 rail of 40 [logo]UZ2T LM6142 AIN LM6142BIN MDIP 8 MSL Full LM6142B.MOD N/A production Buy Now 1K+ $2.1000 rail of 40 [logo]UZ2T LM6142 BIN 5962CERDIP 9550301QPA 8 Full MSL LM6142A.MOD N/A production 25+ $12.3000 rail of 40 [logo]ZS4A$E LM6142AMJQML 59629550301QPA LM6142AMJMLS 8 MSL LM6142AIM SOIC NARROW LM6142BIM CERDIP Buy Now rail [logo]ZS4A$E of LM6142AMJN/A MLS Full LM6142A.MOD N/A production LM6142 MDC Die Full production N/A Samples tray of N/A - LM6142BI MDC Die Full LM6142B.MOD N/A production Samples tray of N/A - - - LM6142 MWC LM6142BI MWC N/A Wafer Full production N/A wafer jar of N/A Wafer Full LM6142B.MOD N/A production wafer jar of N/A N/A General Description file:///H|/imaging/BITTING/cpl/20020808_1/08062002_10/NATL/08062002_HTML/LM6142.html (2 of 3) [09-Aug-2002 4:31:59 PM] National P/N LM6142 - Dual High Speed/Low Power 17 MHz Rail-to-Rail I/O Operational Amplifier Using patent pending new circuit topologies, the LM6142/44 provides new levels of performance in applications where low voltage supplies or power limitations previously made compromise necessary. Operating on supplies of 1.8V to over 24V, the LM6142/44 is an excellent choice for battery operated systems, portable instrumentation and others. The greater than rail-to-rail input voltage range eliminates concern over exceeding the common-mode voltage range. The rail-to-rail output swing provides the maximum possible dynamic range at the output. This is particularly important when operating on low supply voltages. High gain-bandwidth with 650 A/Amplifier supply current opens new battery powered applications where previous higher power consumption reduced battery life to unacceptable levels. The ability to drive large capacitive loads without oscillating functionally removes this common problem. Features At VS = 5V. Typ unless noted. Rail-to-rail input CMVR -0.25V to 5.25V Rail-to-rail output swing 0.005V to 4.995V Wide gain-bandwidth: 17 MHz at 50 kHz (typ) Slew rate: Small signal, 5V/s Large signal, 30V/s Low supply current 650 A/Amplifier Wide supply range 1.8V to 24V CMRR 107 dB Gain 108 dB with RL = 10k PSRR 87 dB Applications Battery operated instrumentation Depth sounders/fish finders Barcode scanners Wireless communications Rail-to-rail in-out instrumentation amps Design Tools Title Size in Kbytes Date Amplifiers Selection Guide software for Windows 7 Kbytes View Online Download Receive via Email 12-Jun-2002 View If you have trouble printing or viewing PDF file(s), see Printing Problems. [Information as of 5-Aug-2002] Search Design Purchasing Quality Company Home About Languages . Website Guide . About "Cookies" . National is QS 9000 Certified . Privacy/Security Statement . Contact Us . Site Terms & Conditions of Use . Copyright 2002 (c) National Semiconductor Corporation . My Preferences . 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