LM837 Low-Noise Quad Operational Amplifier

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LM837 IC is a quad operational amplifier designed for low noise, high speed, wide bandwidth performance. It has a unique output stage that 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.

Operational Amplifier

Operational amplifiers are simple electronic circuits that can boost a weak signal to a level of higher amplitude. An operational amplifier is generally used in applications such as home entertainment systems, megaphones, speakers, and microphones, etc. An op-amp usually operates with a number of feedback components that determine the resulting function or “operation” of the amplifier and by virtue of the different feedback, configurations whether resistive, capacitive, or both.

LM837 Pinout

LM837 Pin Configuration

Pin No	Pin Name	Description
1	OUT 1	Output Of Amplifier 1
2	INV-INPUT 1	Inverting Input Of Amplifier 1
3	NON-INV-INPUT 1	Non Inverting Input Of Amplifier 1
4	VCC	Collector supply voltage
5	NON-INV-INPUT 2	Non Inverting Input Of Amplifier 2
6	INV-INPUT 2	Inverting Input Of Amplifier 2
7	OUT 2	Output Of Amplifier 2
8	OUT 3	Output Of Amplifier 3
9	INV-INPUT 3	Inverting Input Of Amplifier 3
10	NON-INV-INPUT 3	Non Inverting Input Of Amplifier 3
11	VEE	Emitter Supply
12	NON-INV-INPUT 4	Non Inverting Input Of Amplifier 4
13	INV-INPUT 4	Inverting Input Of Amplifier 4
14	OUT 4	Output Of Amplifier 4