LM837 Low Noise Quad Operational Amplifier General Description Features The LM837 is a quad operational amplifier designed for low noise, high speed and wide bandwidth performance. It has a new type of output stage which can drive a 600Ω load, making it ideal for almost all digital audio, graphic equalizer, preamplifiers, and professional audio applications. Its high performance characteristics also make it suitable for instrumentation applications where low noise is the key consideration. The LM837 is internally compensated for unity gain operation. It is pin compatible with most other standard quad op amps and can therefore be used to upgrade existing systems with little or no change. n High slew rate 10 V/µs (typ); 8 V/µs (min) n Wide gain bandwidth product 25 MHz (typ); 15 MHz (min) n Power bandwidth 200 kHz (typ) ± 40 mA n High output current > 600Ω n Excellent output drive performance n Low input noise voltage 4.5 nV/ n Low total harmonic distortion 0.0015% n Low offset voltage 0.3 mV Schematic and Connection Diagrams Dual-In-Line Package DS009047-2 Top View Order Number LM837M or LM837N See NS Package Number M14A or N14A DS009047-1 © 1999 National Semiconductor Corporation DS009047 www.national.com LM837 Low Noise Quad Operational Amplifier May 1999 Absolute Maximum Ratings (Note 1) Storage Temperature Range, TSTG −60˚C to +150˚C Soldering Information Dual-In-Line Package Soldering (10 seconds) 260˚C Small Outline Package Vapor Phase (60 seconds) 215˚C Infrared (15 seconds) 220˚C ESD rating to be determined. See AN-450 “Surface Mounting Methods and Their Effect on Product Reliability” for other methods of soldering surface mount devices. If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage, VCC/VEE Differential Input Voltage, VID (Note 2) Common Mode Input Voltage, VIC (Note 2) Power Dissipation, PD (Note 3) Operating Temperature Range, TOPR ± 18V ± 30V ± 15V 1.2W (N) 830 mW (M) −40˚C to +85˚C DC Electrical Characteristics TA = 25˚C, VS = ± 15V Symbol Parameter Typ Max Units 0.3 5 mV Input Offset Current 10 200 nA IB Input Bias Current 500 1000 AV Large Signal Voltage Gain VOM Output Voltage Swing VCM Common Mode Input Voltage CMRR Common Mode Rejection Ratio PSRR Power Supply Rejection Ratio IS Power Supply Current VOS Input Offset Voltage IOS Condition RS = 50Ω RL = 2 kΩ, VOUT = ± 10V RL = 2 kΩ RL = 600Ω VIN = ± 12V VS = 15 z 5, −15 z −5 RL = ∞, Four Amps Min nA 90 110 dB ± 12 ± 10 ± 12 ± 13.5 ± 12.5 ± 14.0 V 80 100 dB 80 100 V V dB 10 15 mA Min Typ Max Units 8 10 V/µs 15 25 MHz AC Electrical Characteristics TA = 25˚C, VS = ± 15V Symbol Parameter SR Slew Rate GBW Gain Bandwidth Product Condition RL = 600Ω f = 100 kHz, RL = 600Ω Design Electrical Characteristics TA = 25˚C, VS = ± 15V (Note 4) Symbol PBW Power Bandwidth Parameter en1 Equivalent Input Noise Voltage Condition VO = 25 VP-P, RL = 600Ω, THD < 1% JIS A, RS = 100Ω en2 Equivalent Input Noise Voltage f = 1 kHz Min Typ 200 0.5 Max Units kHz µV nV/ 4.5 in Equivalent Input Noise Current f = 1 kHz pA/ 0.7 THD Total Harmonic Distortion AV = 1, VOUT = 3 Vrms, f = 20 z 20 kHz, RL = 600Ω fU Zero Cross Frequency φm Phase Margin Input-Referred Crosstalk ∆VOS/∆T 0.0015 % Open Loop 12 MHz Open Loop f = 20 z 20 kHz 45 deg Average TC of Input Offset Voltage −120 dB 2 µV/˚C 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. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which guarantee specific performance 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 2: Unless otherwise specified the absolute maximum input voltage is equal to the power supply voltage. www.national.com 2 Design Electrical Characteristics (Continued) Note 3: For operation at ambient temperatures above 25˚C, the device must be derated based on a 150˚C maximum junction temperature and a thermal resistance, junction to ambient, as follows: LM837N, 90˚C/W; LM837M, 150˚C/W. Note 4: The following parameters are not tested or guaranteed. Detailed Schematic DS009047-3 Typical Performance Characteristics Maximum Power Dissipation vs Ambient Temperature Normalized Input Bias Current vs Supply Voltage DS009047-10 DS009047-11 3 Normalized Input Bias Current vs Ambient Temperature DS009047-12 www.national.com Typical Performance Characteristics Supply Current vs Supply Voltage (Continued) Supply Current vs Ambient Temperature Positive Current Limit DS009047-15 DS009047-13 Negative Current Limit DS009047-14 Maximum Output Voltage vs Supply Voltage Maximum Output Voltage vs Supply Voltage DS009047-16 DS009047-17 Maximum Output Voltage vs Ambient Temperature Maximum Output Voltage vs Ambient Temperature DS009047-18 Power Bandwidth DS009047-21 DS009047-19 www.national.com DS009047-20 4 Typical Performance Characteristics Normalized Slew Rate & Gain Bandwidth vs Supply Voltage (f = 100 kHz) (Continued) Normalized Slew Rate & Gain Bandwidth (f = 100 kHz) vs Ambient Temperature Voltage Gain vs Supply Voltage DS009047-24 DS009047-22 Voltage Gain vs Ambient Temperature DS009047-23 Power Supply Rejection vs Frequency CMRR vs Frequency DS009047-27 DS009047-25 Open Loop Gain & Phase vs Frequency DS009047-26 Total Harmonic Distortion vs Frequency Equivalent Input Noise Voltage vs Frequency DS009047-28 DS009047-29 DS009047-30 5 www.national.com Typical Performance Characteristics (Continued) Equivalent Input Noise Current vs Frequency DS009047-31 Small Signal, Non-Inverting TA = 25˚C, AV = 1, RL = 600Ω, VS = ± 15V Current Limit TA = 25˚C, VS = ± 15V, RL = 100Ω, AV = 1 DS009047-6 Large Signal Non-Inverting TA = 25˚C, RL = 600Ω, VS = ± 15V DS009047-7 Large Signal Inverting TA = 25˚C, RL = 600Ω, VS = ± 15V DS009047-8 www.national.com DS009047-9 6 Physical Dimensions inches (millimeters) unless otherwise noted Molded Package (SO) Order Number LM837M NS Package Number M14A Lit. #107255 Molded Dual-In-Line Package Order Number LM837N NS Package Number N14A 7 www.national.com LM837 Low Noise Quad Operational Amplifier Notes 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: [email protected] www.national.com National Semiconductor Europe Fax: +49 (0) 1 80-530 85 86 Email: [email protected] 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 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. 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