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National LM725 Data Manual/Instructions

Summary

This operational amplifier series offers superior performance for demanding low-level instrumentation applications. Featuring exceptionally low noise, minimal input voltage drift, and high common mode rejection, the LM725 provides accuracy across a wide supply range, suitable for precision circuitry design. This manual details technical specifications, electrical characteristics (including gain, offset voltage, and current), operating temperature ranges (-55°C to +125°C for some variants), and package information necessary for integrating this high-performance component into your electronics projects.

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Page 1 Text Content

查询LM725供应商

LM perational A plifier

LM725 Operational Amplifier General Description Features

The LM725/LM725A/LM725C are operational amplifiers fea- High open loop gain 3,000,000

turing superior performance in applications where low noise, Low input voltage drift 0.6 µV/˚C low drift, and accurate closed-loop gain are required. With High common mode rejection d B high common mode rejection and offset null capability, it is Low input noise current 0.15 p A/√Hz especially suited for low level instrumentation applications

Low input offset current n A

over wide supply voltage range.

High input voltage range ±14V

The LM725A has tightened electrical performance with

Wide power supply range ±3V to ±22V

higher input accuracy and like the LM725, is guaranteed

Offset null capability

over −55˚C to +125˚C temperature range. The LM725C

Output short circuit protection

has slightly relaxed specifications and has its performance guaranteed over 0˚C to 70˚C temperature range.

Connection Diagrams

Metal Can Package Dual-In-Line Package

DS010474-2

Order Number LM725CN See NS Package Number N08E

DS010474-1

Order Number LM725H/883, LM725CH

or LM725AH/883

See NS Package Number H08C

National Semiconductor Corporation DS010474 www.national.com

Page Summary Contents For National LM725 Data Manual/Instructions

Page 1 查询LM725供应商 LM perational A plifier LM725 Operational Amplifier General Description Features The LM725/LM725A/LM725C are operational amplifiers fea- High open loop gain 3,000,000 turing superior perfor...
Page 2 Absolute Maximum Ratings (Note 1) Lead Temperature If Military/Aerospace specified devices are required, (Soldering, Sec.) 260˚C please contact the National Semiconductor Sales Office/ Maximum Junctio...
Page 3 Electrical Characteristics (Note 4) (Continued) Parameter Conditions LM725A LM725 LM725C Units Min Typ Max Min Typ Max Min Typ Max Large Signal Voltage RL kΩ Gain TA TMAX 1,000,000 1,000,000 125,000 V...
Page 4 Typical Performance Characteristics Voltage Gain vs Temperature Change in Trimmed Input Untrimmed Input Offset for Supply Voltages Offset Voltage vs Temperature Voltage vs Temperature DS010474-15 DS01...
Page 5 Typical Performance Characteristics (Continued) Power Consumption Open Loop Frequency Values for Suggested Compen- vs Temperature Response for Values sation Networks vs Various of Compensation (Note 6...
Page 6 Auxiliary Circuits Voltage Offset Null Circuit DS010474-3 Frequency Compensation Circuit DS010474-4 Compensation Component Values AV R1 C1 R2 C2 www.national.com
Page 7 Typical Applications Photodiode Amplifier DS010474-9 DC Gains 10,000; 1,000; 100; and Bandwidth Determined by value of C1 Thermocouple Amplifier DS010474-10 Note: Indicates ±1% metal film resistors re...
Page 8 Typical Applications (Continued) ±100V Common Mode Range Differential Amplifier DS010474-11 Instrumentation Amplifier with High Common Mode Rejection DS010474-12 www.national.com
Page 9 Typical Applications (Continued) Precision Amplifier AVCL DS010474-13 www.national.com9
Page 10 Physical Dimensions inches (millimeters) unless otherwise noted Order Number LM725H/883, LM725CH or LM725AH/883 NS Package Number H08C Order Number LM725CN NS Package Number N08E www.national.com
Page 11 LM perational A plifier 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 P...

Manual Details

Brand National
Pages 11
File Size 498.33 KB
Published June 17, 2026
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Frequently Asked Questions

What are the notable performance features of the LM725 operational amplifier?

It offers high open loop gain (3,000,000), low input voltage drift (0.6 μV/˚C), and high common mode rejection (120 dB).

Does the LM725 accommodate extreme temperature environments?

The LM725A guarantees offset null capability over a wide range of −55˚C to +125˚C. The LM725C is limited to 0˚C to 70˚C.

What are the maximum temperature limits for soldering this device?

The absolute maximum rating for lead temperature during soldering (10 Sec.) is 260˚C.

What packages are available for ordering the LM725 Amplifier?

It can be ordered in Metal Can Package (DS010474-2) or a Dual-In-Line Package with specific part numbers like LM725CN.