LM101A NSC | Alldatasheet

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The LM101A series are general purpose operational amplifi- ers which feature improved performance over industry stan- dards like the LM709. Advanced processing techniques make possible an order of magnitude reduction in input cur- rents, and a redesign of the biasing circuitry reduces the temperature drift of input current. Improved specifications in- clude:

  • Offset voltage 3 mV maximum over temperature (LM101A/LM201A)
  • Input current 100 nA maximum over temperature (LM101A/LM201A)
  • Offset current 20 nA maximum over temperature (LM101A/LM201A)
  • Guaranteed drift characteristics
  • Offsets guaranteed over entire common mode and sup- ply voltage ranges
  • Slew rate of 10V/µs as a summing amplifier This amplifier offers many features which make its appli- cation nearly foolproof: overload protection on the input and output, no latch-up when the common mode range is exceeded, and freedom from oscillations and compensa- tion with a single 30 pF capacitor. It has advantages over internally compensated amplifiers in that the frequency compensation can be tailored to the particular applica- tion. For example, in low frequency circuits it can be over- compensated for increased stability margin. Or the com- pensation can be optimized to give more than a factor of ten improvement in high frequency performance for most applications. In addition, the device provides better accuracy and lower noise in high impedance circuitry. The low input currents also make it particularly well suited for long interval inte- grators or timers, sample and hold circuits and low fre- quency waveform generators. Further, replacing circuits where matched transistor pairs buffer the inputs of con- ventional IC op amps, it can give lower offset voltage and a drift at a lower cost. The LM101A is guaranteed over a temperature range of −55˚C to +125˚C, the LM201A from −25˚C to +85˚C, and the LM301A from 0˚C to +70˚C. Connection Diagrams (Top View) Dual-In-Line Package DS007752-4 Order Number LM101AJ, LM101J/883 (Note 1), LM201AN or LM301AN See NS Package Number J08A or N08E Ceramic Flatpack Package DS007752-40 Order Number LM101AW/883 or LM101W/883 See NS Package Number W10A September 1999 LM101A/LM201A/LM301A Operational Amplifiers © 1999 National Semiconductor Corporation DS007752 www.national.com

Connection Diagrams (Top View) (Continued) Note 1:Available per JM38510/10103. Metal Can Package DS007752-2 Note:Pin 4 connected to case. Order Number LM101AH, LM101AH/883 (Note 1), LM201AH or LM301AH See NS Package Number H08C Dual-In-Line Package DS007752-3 Order Number LM101AJ-14/883 (Note 1) See NS Package Number J14A www.national.com 2

Absolute Maximum Ratings(Note 2) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. LM101A/LM201A LM301A Supply Voltage ±22V ±18V Differential Input Voltage ±30V ±30V Input Voltage (Note 3) ±15V ±15V Output Short Circuit Duration (Note 4) Continuous Continuous Operating Ambient Temp. Range −55˚C to +125˚C (LM101A) 0˚C to +70˚C −25˚C to +85˚C (LM201A) T J Max H-Package 150˚C 100˚C N-Package 150˚C 100˚C J-Package 150˚C 100˚C Power Dissipation at T A = 25˚C H-Package (Still Air) 500 mW 300 mW (400 LF/Min Air Flow) 1200 mW 700 mW N-Package 900 mW 500 mW J-Package 1000 mW 650 mW Thermal Resistance (Typical)θ jA H-Package (Still Air) 165˚C/W 165˚C/W (400 LF/Min Air Flow) 67˚C/W 67˚C/W N Package 135˚C/W 135˚C/W J-Package 110˚C/W 110˚CmW (Typical)θ jC H-Package 25˚C/W 25˚C/W Storage Temperature Range −65˚C to +150˚C −65˚C to +150˚C Lead Temperature (Soldering, 10 sec.) Metal Can or Ceramic 300˚C 300˚C Plastic 260˚C 260˚C ESD Tolerance (Note 7) 2000V 2000V Electrical Characteristics(Note 5) TA = TJ Parameter Conditions LM101A/LM201A LM301A Units Min Typ Max Min Typ Max Input Offset Voltage T A = 25˚C, RS ≤ 50 kΩ 0.7 2.0 2.0 7.5 mV Input Offset Current T A = 25˚C 1.5 10 3.0 50 nA Input Bias Current T A = 25˚C 30 75 70 250 nA Input Resistance T A = 25˚C 1.5 4.0 0.5 2.0 M Ω Supply Current T A = 25˚C V S = ±20V 1.8 3.0 mA VS = ±15V 1.8 3.0 mA Large Signal Voltage Gain T A = 25˚C, VS = ±15V 50 160 25 160 V/mV VOUT = ±10V, RL ≥ 2k Ω Input Offset Voltage R S ≤ 50 kΩ 3.0 10 mV Average Temperature Coefficient RS ≤ 50 kΩ 3.0 15 6.0 30 µV/˚C of Input Offset Voltage Input Offset Current 20 70 nA Average Temperature Coefficient 25˚C≤ T A ≤ TMAX 0.01 0.1 0.01 0.3 nA/˚C of Input Offset Current T MIN ≤ TA ≤ 25˚C 0.02 0.2 0.02 0.6 nA/˚C Input Bias Current 0.1 0.3 µA Supply Current T A = TMAX ,V S = ±20V 1.2 2.5 mA www.national.com3

Electrical Characteristics(Note 5) (Continued) TA = TJ Parameter Conditions LM101A/LM201A LM301A Units Min Typ Max Min Typ Max Large Signal Voltage Gain V S = ±15V, VOUT = ±10V 25 15 V/mV R L ≥ 2k Output Voltage Swing V S = ±15V R L = 10 kΩ ±12 ±14 ±12 ±14 V R L = 2k Ω ±10 ±13 ±10 ±13 V Input Voltage Range V S = ±20V ±15 V VS = ±15V +15, −13 ±12 +15, −13 V Common-Mode Rejection Ratio R S ≤ 50 kΩ 80 96 70 90 dB Supply Voltage Rejection Ratio RS ≤ 50 kΩ 80 96 70 96 dB Note 2:Absolute Maximum Ratings indicate limits beyond which damage to the device may occur.Operating ratings indicate for which the device is functional,but do no guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which guarantee spe- cific limits. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters where no limit is given,however, the typical value is a good indication of device performance. Note 3:For supply voltages less than±15V, the absolute maximum input voltage is equal to the supply voltage. Note 4:Continuous short circuit is allowed for case temperatures to 125˚C and ambient temperatures to 75˚C for LM101A/LM201A, and 70˚C and 55˚C respectively for LM301A. Note 5:Unless otherwise specified, these specifications apply for C1= 30 pF,±5V ≤ VS ≤ ±20V and −55˚C≤ TA ≤ +125˚C (LM101A),±5V ≤ VS ≤ ±20V and −25˚C ≤ TA ≤ +85˚C (LM201A),±5V ≤ VS ≤ ±15V and 0˚C≤ TA ≤ +70˚C (LM301A). Note 6:Refer to RETS101AX for LM101A military specifications and RETS101X for LM101 military specifications. Note 7:Human body model, 100 pF discharged through 1.5 kΩ . Guaranteed Performance CharacteristicsLM101A/LM201A Guaranteed Performance CharacteristicsLM301A Input Voltage Range DS007752-41 Output Swing DS007752-42 Voltage Gain DS007752-43 Input Voltage Range DS007752-44 Output Swing DS007752-45 Voltage Gain DS007752-46 www.national.com 4

Typical Performance Characteristics Supply Current DS007752-47 Voltage Gain DS007752-48 Maximum Power Dissipation DS007752-49 Input Current, LM101A/LM201A/LM301A DS007752-50 Current Limiting DS007752-51 Input Noise Voltage DS007752-52 Input Noise Current DS007752-53 Common Mode Rejection DS007752-54 Power Supply Rejection DS007752-55 www.national.com5

Typical Performance Characteristics(Continued) Typical Performance Characteristics for Various Compensation Circuits (Note 9) Closed Loop Output Impedance DS007752-56 Single Pole Compensation DS007752-8 C S=3 0p F Two Pole Compensation DS007752-12 C S=3 0p F C 2=1 0C 1 Feedforward Compensation DS007752-16 fo= 3 MHz www.national.com 6

Typical Performance Characteristics for Various Compensation Circuits (Note 9) (Continued) Open Loop Frequency Response DS007752-9 Open Loop Frequency Response DS007752-13 Open Loop Frequency Response DS007752-17 Large Signal Frequency Response DS007752-10 Large Signal Frequency Response DS007752-14 Large Signal Frequency Response DS007752-18 Voltage Follower Pulse Response DS007752-11 Voltage Follower Pulse Response DS007752-15 Inverter Pulse Response DS007752-19 www.national.com7

Typical Applications(Note 9) Variable Capacitance Multiplier DS007752-20 Simulated Inductor DS007752-21 L ≅ R1 R2 C1 R S = R2 R P = R1 Fast Inverting Amplifier with High Input Impedance DS007752-22 Inverting Amplifier with Balancing Circuit DS007752-23 †May be zero or equal to parallel combination of R1 and R2 for minimum offset. Sine Wave Oscillator DS007752-24 fo = 10 kHz www.national.com 8

Typical Applications(Note 9) (Continued) Application Hints(Note 9) Although the LM101A is designed for trouble free operation, experience has indicated that it is wise to observe certain precautions given below to protect the devices from abnor- mal operating conditions. It might be pointed out that the ad- vice given here is applicable to practically any IC op amp, al- though the exact reason why may differ with different devices. Integrator with Bias Current Compensation DS007752-25 *Adjust for zero integrator drift. Current drift typically 0.1 nA/˚C over −55˚C to +125˚C temperature range. Protecting Against Gross Fault Conditions DS007752-26 *Protects input †Protects output ‡Protects output — not needed when R4 is used. Compensating for Stray Input Capacitances or Large Feedback Resistor DS007752-27 Isolating Large Capacitive Loads DS007752-28 www.national.com9

Application Hints(Note 9) (Continued) When driving either input from a low-impedance source, a limiting resistor should be placed in series with the input lead to limit the peak instantaneous output current of the source to something less than 100 mA. This is especially important when the inputs go outside a piece of equipment where they could accidentally be connected to high voltage sources. Large capacitors on the input (greater than 0.1 µF) should be treated as a low source impedance and isolated with a resis- tor. Low impedance sources do not cause a problem unless their output voltage exceeds the supply voltage. However, the supplies go to zero when they are turned off, so the iso- lation is usually needed. The output circuitry is protected against damage from shorts to ground. However, when the amplifier output is connected to a test point, it should be isolated by a limiting resistor, as test points frequently get shorted to bad places. Further, when the amplifer drives a load external to the equipment, it is also advisable to use some sort of limiting resistance to preclude mishaps. Precautions should be taken to insure that the power sup- plies for the integrated circuit never become reversed — even under transient conditions. With reverse voltages greater than 1V, the IC will conduct excessive cur- rent, fusing internal aluminum interconnects. If there is a possibility of this happening, clamp diodes with a high peak current rating should be installed on the supply lines. Rever- sal of the voltage between V + and V− will always cause a problem, although reversals with respect to ground may also give difficulties in many circuits. The minimum values given for the frequency compensation capacitor are stable only for source resistances less than 10 kΩ , stray capacitances on the summing junction less than 5 pF and capacitive loads smaller than 100 pF. If any of these conditions are not met, it becomes necessary to over- compensate the amplifier with a larger compensation capaci- tor. Alternately, lead capacitors can be used in the feedback network to negate the effect of stray capacitance and large feedback resistors or an RC network can be added to isolate capacitive loads. Although the LM101A is relatively unaffected by supply by- passing, this cannot be ignored altogether. Generally it is necessary to bypass the supplies to ground at least once on every circuit card, and more bypass points may be required if more than five amplifiers are used. When feed-forward compensation is employed, however, it is advisable to by- pass the supply leads of each amplifier with low inductance capacitors because of the higher frequencies involved. Typical Applications(Note 9) Standard Compensation and Offset Balancing Circuit DS007752-29 Fast Voltage Follower DS007752-31 Power Bandwidth: 15 kHz Slew Rate: 1V/µs www.national.com 10

Typical Applications(Note 9) (Continued) Fast Summing Amplifier DS007752-30 Power Bandwidth: 250 kHz Small Signal Bandwiidth: 3.5 MHz Slew Rate: 10V/µs Bilateral Current Source DS007752-32 R3 = R 4+R 5 R1 = R2 Fast AC/DC Converter(Note 8) DS007752-33 Note 8:Feedforward compensation can be used to make a fast full wave rectifier without a filter. www.national.com11

Typical Applications(Note 9) (Continued) Instrumentation Amplifier DS007752-34 R1 = R4; R2 = R3 *,† Matching determines CMRR. Integrator with Bias Current Compensation DS007752-35 *Adjust for zero integrator drift. Current drift typically 0.1 nA/˚C over 0˚C to +70˚C temperature range. Voltage Comparator for Driving RTL Logic or High Current Driver DS007752-37 www.national.com 12

Typical Applications(Note 9) (Continued) Low Frequency Square Wave Generator DS007752-36 Low Drift Sample and Hold DS007752-38 *Polycarbonate-dielectric capacitor Voltage Comparator for Driving DTL or TTL Integrated Circuits DS007752-39 www.national.com13

Schematic (Note 9) Note 9:Pin connections shown are for 8-pin packages. DS007752-1 www.national.com 14

Physical Dimensionsinches (millimeters) unless otherwise noted Metal Can Package (H) Order Number LM101AH, LM101AH/883 LM201AH or LM301AH Ceramic Dual-In-Line Package (J) Order Number LM101J/883 or LM101AJ www.national.com15

Physical Dimensionsinches (millimeters) unless otherwise noted (Continued) Ceramic Dual-In-Line Package (J) Order Number LM101AJ-14/883 Molded Dual-In-Line Package (N) Order Number LM201AN or LM301AN www.national.com 16

Physical Dimensionsinches (millimeters) unless otherwise noted (Continued) 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. 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 Corporation Americas Tel: 1-800-272-9959 Fax: 1-800-737-7018 Email: support@nsc.com National Semiconductor Europe Fax: +49 (0) 1 80-530 85 86 Email: europe.support@nsc.com Deutsch Tel: +49 (0) 1 80-530 85 85 English Tel: +49 (0) 1 80-532 78 32 Français Tel: +49 (0) 1 80-532 93 58 Italiano Tel: +49 (0) 1 80-534 16 80 National Semiconductor Asia Pacific Customer Response Group Tel: 65-2544466 Fax: 65-2504466 Email: sea.support@nsc.com National Semiconductor Japan Ltd. Tel: 81-3-5639-7560 Fax: 81-3-5639-7507 www.national.com Ceramic Flatpack Package (W) Order Number LM101AW/883 or LM101W/883 LM101A/LM201A/LM301A Operational Amplifiers 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.