LM148JAN Quad 741 Op Amps General Description Features The LM148 is a true quad LM741. It consists of four independent, high gain, internally compensated, low power operational amplifiers which have been designed to provide functional characteristics identical to those of the familiar LM741 operational amplifier. In addition the total supply current for all four amplifiers is comparable to the supply current of a single LM741 type op amp. Other features include input offset currents and input bias current which are much less than those of a standard LM741. Also, excellent isolation between amplifiers has been achieved by independently biasing each amplifier and using layout techniques which minimize thermal coupling. n n n n n n n n n n 741 op amp operating characteristics Class AB output stage -- no crossover distortion Pin compatible with the LM124 Overload protection for inputs and outputs Low supply current drain: 0.6 mA/Amplifier Low input offset voltage: 1 mV Low input offset current: 4 nA Low input bias current 30 nA High degree of isolation between amplifiers: 120 dB Gain bandwidth product (unity gain): 1.0 MHz The LM148 can be used anywhere multiple LM741 or LM1558 type amplifiers are being used and in applications where amplifier matching or high packing density is required. Ordering Information NS PART NUMBER SMD PART NUMBER NS PACKAGE NUMBER PACKAGE DESCRIPTION JL148BCA JM38510/11001BCA J14A 14LD CERDIP JL148BDA JM38510/11001BDA W14B 14LD CERPACK JL148BZA JM38510/11001BZA WG14A 14LD Ceramic SOIC JL148SCA JM38510/11001SCA J14A 14LD CERDIP JL148SDA JM38510/11001SDA W14B 14LD CERPACK Connection Diagram 20122702 Top View See NS Package Number J14A, W14B, WG14A (c) 2005 National Semiconductor Corporation DS201227 www.national.com LM148JAN Quad 741 Op Amp February 2005 LM148JAN Schematic Diagram 20122701 * 1 pF in the LM149 www.national.com 2 LM148JAN Absolute Maximum Ratings (Note 1) Input Voltage Range 22V 20V Input Current Range -0.1mA to 10mA Supply Voltage 30V Differential Input Voltage (Note 2) Output Short Circuit Duration (Note 3) Continuous Power Dissipation (Pd at 25C) (Note 4) CERDIP CERPACK 400mW 350mW Thermal Resistance JA CERDIP (Still Air) CERDIP (500LF/ Min Air flow) CERPACK (Still Air) CERPACK (500LF/ Min Air flow) Ceramic SOIC (Still Air) Ceramic SOIC (500LF/ Min Air flow) 103C/W 52C/W 140C/W 100C/W 176C/W 116C/W JC CERDIP CERPACK Ceramic SOIC 19C/W 25C/W 25C/W Package Weight (typical) CERDIP CERPACK Ceramic SOIC TBD 465mg 415mg Maximum Junction Temperature (TJMAX) 175C Operating Temperature Range -55C TA +125C Storage Temperature Range -65C TA +150C Lead Temperature (Soldering, 10 sec.) Ceramic 300C ESD tolerance (Note 5) 500V Quality Conformance Inspection MIL-STD-883, Method 5005 -- Group A Subgroup Description Temp ( C) 1 Static tests at +25 2 Static tests at +125 3 Static tests at -55 4 Dynamic tests at +25 5 Dynamic tests at +125 6 Dynamic tests at -55 7 Functional tests at +25 8A Functional tests at +125 8B Functional tests at -55 9 Switching tests at +25 10 Switching tests at +125 11 Switching tests at -55 3 www.national.com LM148JAN Electrical Characteristics DC PARAMETERS (The following conditions apply to all parameters, unless otherwise specified.) VCC = 20V, VCM = 0V, measure each amplifier. Symbol VIO Parameter Input Offset Voltage Conditions Notes Units +VCC = 35V, -VCC = -5V, VCM = -15V -5.0 +5.0 mV 1 -6.0 +6.0 mV 2, 3 +VCC = 5V, -VCC = -35V, VCM = +15V -5.0 +5.0 mV 1 -6.0 +6.0 mV 2, 3 -5.0 +5.0 mV 1 -6.0 +6.0 mV 2, 3 -5.0 +5.0 mV 1 -6.0 +6.0 mV 2, 3 +VCC = 5V, -VCC = -5V, Delta VIO / Input Offset Voltage Delta T Temperature Stability IIO Input Offset Current 25C TA 125C (Note 6) -25 25 V/C 2 -55C TA 25C (Note 6) -25 25 V/C 3 +VCC = 35V, -VCC = -5V, VCM = -15V -25 +25 nA 1, 2 -75 +75 nA 3 +VCC = 5V, -VCC = -35V, VCM = +15V -25 +25 nA 1, 2 -75 +75 nA 3 -25 +25 nA 1, 2 +VCC = 5V, -VCC = -5V, Delta IIO / Input Offset Current Delta T Temperature Stability IIB Input Bias Current Subgroups Min Max -75 +75 nA 3 -25 +25 nA 1, 2 -75 +75 nA 3 25C TA 125C (Note 6) -200 200 pA/C 2 -55C TA 25C (Note 6) -400 400 pA/C 3 +VCC = 35V, -VCC = -5V, VCM = -15V -0.1 100 nA 1, 2 -0.1 325 nA 3 +VCC = 5V, -VCC = -35V, VCM = +15V -0.1 100 nA 1, 2 -0.1 325 nA 3 -0.1 100 nA 1, 2 +VCC = 5V, -VCC = -5V, -0.1 325 nA 3 -0.1 100 nA 1, 2 -0.1 325 nA 3 PSRR+ Power Supply Rejection Ratio -VCC = -20V, +VCC = 20V to 10V (Note 7) -100 100 V/V 1, 2, 3 PSRR- Power Supply Rejection Ratio +VCC = 20V, -VCC = -20V to -10V (Note 7) -100 100 V/V 1, 2, 3 dB 1, 2, 3 Units Subgroups mA 1, 2 CMRR Common Mode Rejection Ratio VCM = 15 V, 5V VCC 35V 76 Electrical Characteristics AC / DC PARAMETERS (The following conditions apply to all parameters, unless otherwise specified.) VCC = 20V, VCM = 0V, measure each amplifier. Symbol Parameter Conditions + IOS Short Circuit Current +VCC = 15V, -VCC = -15V, VCM = -10V - IOS Short Circuit Current +VCC = 15V, -VCC = -15V, VCM = +10V ICC -AVS Power Supply Current Open Loop Voltage Gain Min Max -55 -75 +VCC = 15V, -VCC = -15V VOUT = -15V, RL = 10K VOUT = -15V, RL = 2K www.national.com Notes 4 mA 3 55 mA 1, 2 75 mA 3 3.6 mA 1 4.5 mA 2, 3 50 V/mV 4 25 V/mV 5, 6 50 V/mV 4 25 V/mV 5, 6 (Continued) AC / DC PARAMETERS (The following conditions apply to all parameters, unless otherwise specified.) VCC = 20V, VCM = 0V, measure each amplifier. Symbol +AVS Parameter Open Loop Voltage Gain Conditions Notes VOUT = +15V, RL = 10K VOUT = +15V, RL = 2K AVS +VOP -VOP TRTR Units Subgroups 50 V/mV 4 25 V/mV 5, 6 50 V/mV 4 25 V/mV 5, 6 10 V/mV 4, 5, 6 Min Max Open Loop Voltage Gain VCC = 5V, VOUT = 2V, RL = 10K VCC = 5V, VOUT = 2V, RL = 2K 10 V/mV 4, 5, 6 Output Voltage Swing RL = 10K +16 V 4, 5, 6 RL = 2K +15 V 4, 5, 6 4, 5, 6 Output Voltage Swing RL = 10K -16 V RL = 2K -15 V 4, 5, 6 1 S 7, 8A, 8B Transient Response Time VIN = 50mV, AV = 1 TROS Transient Response Time VIN = 50mV, AV = 1 % 7, 8A, 8B SR Slew Rate VIN = -5V to +5V, AV = 1 0.2 V/S 7, 8A, 8B VIN = +5V to -5V, AV = 1 0.2 V/S 7, 8A, 8B 25 Electrical Characteristics AC PARAMETERS (The following conditions apply to all parameters, unless otherwise specified.) VCC = 20V, VCM = 0V, measure each amplifier. Symbol Parameter NIBB Noise (Broadband) NIPC Noise (Popcorn) CS Channel Separation Conditions Notes Min Max Units Subgroups BW = 10Hz to 5KHz 15 VRMS 7 RS = 20K 40 VPK 7 VIN = 10V, A to B, RL = 2K 80 dB 7 VIN = 10V, A to C, RL = 2K 80 dB 7 VIN = 10V, A to D, RL = 2K 80 dB 7 VIN = 10V, B to A, RL = 2K VIN = 10V, B to C, RL = 2K VIN = 10V, B to D, RL = 2K VIN = 10V, C to A, RL = 2K VIN = 10V, C to B, RL = 2K VIN = 10V, C to D, RL = 2K VIN = 10V, D to A, RL = 2K VIN = 10V, D to B, RL = 2K VIN = 10V, D to C, RL = 2K 80 dB 7 80 dB 7 80 dB 7 80 dB 7 80 dB 7 80 dB 7 80 dB 7 80 dB 7 80 dB 7 Electrical Characteristics DC DRIFT PARAMETERS (The following conditions apply to all parameters, unless otherwise specified.) VCC = 20V, VCM = 0V, measure each amplifier. Delta calculations performed on JAN S and QMLV devices at group B, subgroup 5 only. Symbol Parameter Conditions Notes Min Max Units Subgroups VIO Input Offset Voltage -1 1 mV 1 IIB Input Bias Current -15 15 nA 1 5 www.national.com LM148JAN Electrical Characteristics LM148JAN Electrical Characteristics (Continued) Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. The guaranteed specifications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the listed test conditions. Note 2: The differential input voltage range shall not exceed the supply voltage range. Note 3: Any of the amplifier outputs can be shorted to ground indefinitely; however, more than one should not be simultaneously shorted as the maximum junction temperature will be exceeded. Note 4: The maximum power dissipation for these devices must be derated at elevated temperatures and is dicated by TJMAX, JA, and the ambient temperature, TA. The maximum available power dissipation at any temperature is Pd = (TJMAX - TA)/JA or the number given in the Absolute Maximum Ratings, whichever is less. Note 5: Human body model, 1.5 k in series with 100 pF. Note 6: Calculated parameter. Note 7: Datalogs as V Cross Talk Test Circuit VS = 15V 20122706 20122707 20122743 www.national.com 6 LM148JAN Typical Performance Characteristics Supply Current Input Bias Current 20122723 20122724 Voltage Swing Positive Current Limit 20122725 20122726 Negative Current Limit Output Impedance 20122728 20122727 7 www.national.com LM148JAN Typical Performance Characteristics (Continued) Common-Mode Rejection Ratio Open Loop Frequency Response 20122729 20122730 Bode Plot LM148 Large Signal Pulse Response (LM148) 20122733 20122731 Small Signal Pulse Response (LM148) Undistorted Output Voltage Swing 20122735 www.national.com 20122737 8 LM148JAN Typical Performance Characteristics (Continued) Gain Bandwidth Slew Rate 20122738 20122739 Inverting Large Signal Pulse Response (LM148) Input Noise Voltage and Noise Current 20122741 20122742 Positive Common-Mode Input Voltage Limit Negative Common-Mode Input Voltage Limit 20122705 20122743 9 www.national.com LM148JAN connection) and the capacitance to reduce the phase shift resulting from the capacitive loading. The output current of each amplifier in the package is limited. Short circuits from an output to either ground or the power supplies will not destroy the unit. However, if multiple output shorts occur simultaneously, the time duration should be short to prevent the unit from being destroyed as a result of excessive power dissipation in the IC chip. Application Hints The LM148 series are quad low power LM741 op amps. In the proliferation of quad op amps, these are the first to offer the convenience of familiar, easy to use operating characteristics of the LM741 op amp. In those applications where LM741 op amps have been employed, the LM148 series op amps can be employed directly with no change in circuit performance. As with most amplifiers, care should be taken lead dress, component placement and supply decoupling in order to ensure stability. For example, resistors from the output to an input should be placed with the body close to the input to minimize "pickup" and maximize the frequency of the feedback pole which capacitance from the input to ground creates. The package pin-outs are such that the inverting input of each amplifier is adjacent to its output. In addition, the amplifier outputs are located in the corners of the package which simplifies PC board layout and minimizes package related capacitive coupling between amplifiers. The input characteristics of these amplifiers allow differential input voltages which can exceed the supply voltages. In addition, if either of the input voltages is within the operating common-mode range, the phase of the output remains correct. If the negative limit of the operating common-mode range is exceeded at both inputs, the output voltage will be positive. For input voltages which greatly exceed the maximum supply voltages, either differentially or common-mode, resistors should be placed in series with the inputs to limit the current. A feedback pole is created when the feedback around any amplifier is resistive. The parallel resistance and capacitance from the input of the device (usually the inverting input) to AC ground set the frequency of the pole. In many instances the frequency of this pole is much greater than the expected 3 dB frequency of the closed loop gain and consequently there is negligible effect on stability margin. However, if the feedback pole is less than approximately six times the expected 3 dB frequency a lead capacitor should be placed from the output to the input of the op amp. The value of the added capacitor should be such that the RC time constant of this capacitor and the resistance it parallels is greater than or equal to the original feedback pole time constant. Like the LM741, these amplifiers can easily drive a 100 pF capacitive load throughout the entire dynamic output voltage and current range. However, if very large capacitive loads must be driven by a non-inverting unity gain amplifier, a resistor should be placed between the output (and feedback Typical Applications--LM148 One Decade Low Distortion Sinewave Generator 20122708 fMAX = 5 kHz, THD 0.03% R1 = 100k pot. C1 = 0.0047 F, C2 = 0.01 F, C3 = 0.1 F, R2 = R6 = R7 = 1M, R3 = 5.1k, R4 = 12, R5 = 240, Q = NS5102, D1 = 1N914, D2 = 3.6V avalanche diode (ex. LM103), VS = 15V A simpler version with some distortion degradation at high frequencies can be made by using A1 as a simple inverting amplifier, and by putting back to back zeners in the feedback loop of A3. www.national.com 10 LM148JAN Typical Applications--LM148 (Continued) Low Cost Instrumentation Amplifier 20122709 VS = 15V R = R2, trim R2 to boost CMRR Low Drift Peak Detector with Bias Current Compensation 20122710 Adjust R for minimum drift D3 low leakage diode D1 added to improve speed VS = 15V 11 www.national.com LM148JAN Typical Applications--LM148 (Continued) Universal State-Variable Filter 20122711 Tune Q through R0, For predictable results: fO Q 4 x 104 Use Band Pass output to tune for Q www.national.com 12 LM148JAN Typical Applications--LM148 (Continued) A 1 kHz 4 Pole Butterworth 20122712 Use general equations, and tune each section separately Q1stSECTION = 0.541, Q2ndSECTION = 1.306 The response should have 0 dB peaking A 3 Amplifier Bi-Quad Notch Filter 20122713 Ex: fNOTCH = 3 kHz, Q = 5, R1 = 270k, R2 = R3 = 20k, R4 = 27k, R5 = 20k, R6 = R8 = 10k, R7 = 100k, C1 = C2 = 0.001 F Better noise performance than the state-space approach. 13 www.national.com LM148JAN Typical Applications--LM148 (Continued) A 4th Order 1 kHz Elliptic Filter (4 Poles, 4 Zeros) 20122714 R1C1 = R2C2 = t R'1C'1 = R'2C'2 = t' fC = 1 kHz, fS = 2 kHz, fp = 0.543, fZ = 2.14, Q = 0.841, f' P = 0.987, f' Z = 4.92, Q' = 4.403, normalized to ripple BW Use the BP outputs to tune Q, Q', tune the 2 sections separately R1 = R2 = 92.6k, R3 = R4 = R5 = 100k, R6 = 10k, R0 = 107.8k, RL = 100k, RH = 155.1k, R'1 = R'2 = 50.9k, R'4 = R'5 = 100k, R'6 = 10k, R'0 = 5.78k, R'L = 100k, R'H = 248.12k, R'f = 100k. All capacitors are 0.001 F. Lowpass Response 20122715 www.national.com 14 LM148JAN Typical Simulation LM148, LM741 Macromodel for Computer Simulation 20122721 For more details, see IEEE Journal of Solid-State Circuits, Vol. SC-9, No. 6, December 1974 Note 8: o1 = 112IS = 8 x 10-16 Note 9: o2 = 144*C2 = 6 pF for LM149 20122722 15 www.national.com LM148JAN Revision History Section Date Released 02/15/05 www.national.com Revision A Section Originator Changes New Release, Corporate format L. Lytle 1 MDS data sheet converted into one Corp. data sheet format. MJLM148-X, Rev. 0C1. MDS data sheet will be archived. 16 LM148JAN Physical Dimensions inches (millimeters) unless otherwise noted Ceramic Dual-In-Line Package (J) NS Package Number J14A Ceramic Flatpack (W) NS Package Number W14B 17 www.national.com LM148JAN Quad 741 Op Amp Physical Dimensions inches (millimeters) unless otherwise noted (Continued) Ceramic SOIC (WG) NS Package Number WG14A 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. For the most current product information visit us at www.national.com. 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. 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