LM2902 Low Power Quad Operational Amplifier

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LM2902 is a part of the LM290x IC series. LM2902 consists of four low-power, high gain, frequency compensated operational amplifiers. The op-amp is stable at unity gain and does not have a reverse phase in overdrive conditions. The design for ESD gives the LM2902 an HBM specification for a minimum of 2 kV. The IC is available in a 14 – pin hermetically sealed dual inline IC packaging (DIP). LM2902 is directly compatible with almost every CMOS, PMOs, and NMOS device.

Operational Amplifier

An operational amplifier is a voltage amplifying device; that is designed with the intention to be used with external feedback components such as resistors and capacitors between its I/O terminals. These feedback components determine the resulting function or “operation” of the amplifier and by virtue of the different feedback configurations whether resistive, capacitive or both.

LM2902 Pinout

LM2902 Pin Configuration

Pin No	Pin Name	Description
1	OUTPUT 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	V+	Positive Power Supply
5	NON-INV-INPUT 2	Non Inverting Input Of Amplifier 2
6	INV-INPUT 2	Inverting Input Of Amplifier 2
7	OUTPUT 2	Output Of Amplifier 2
8	OUTPUT 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	GND	Ground Pin
12	NON-INV-INPUT 4	Non Inverting Input Of Amplifier 4
13	INV-INPUT 4	Inverting Input Of Amplifier 4
14	OUTPUT 4	Output Of Amplifier 4

LM2902 Features

Internally frequency compensated for unity gain
Large DC voltage gain 100 dB
Wide bandwidth (unity gain) 1 MHz (temperature compensated)
Very low supply current drain (700 µA) — essentially independent of supply voltage
Low input biasing current 45 nA (temperature compensated)
Low input offset voltage 2 mV and offset current: 5 nA
Input common-mode voltage range includes ground
Differential input voltage range equal to the power supply voltage
Large output voltage swing 0V to V+ − 1.5V