LM2904 Low Power Dual Operational Amplifier

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LM2904 belongs to the LM290X IC series. LM2904 is an industry standard, 1MHz, dual general purpose operational amplifier for cost sensitive processess. The IC provides outstanding value for cost sensitive applications, with features including low offset (300 µV, typical), common-mode input range to ground, and high differential input voltage capability. The IC always comes in an 8-pin hermetically sealed dual in line IC package (DIP). LM2904 offers many different features such as wide bandwidth, high noise suppression, and low power dissipation.

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Op-Amp

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.

LM2904 Pinout

LM2904 Pin Configuration

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

LM2904 Features

Very low supply current drain (500 µA) — essentially independent of supply voltage
Low input offset voltage: 2 mV
Input common-mode voltage range includes ground
Differential input voltage range equal to the power supply voltage
Large output voltage swing
Internally frequency compensated for unity gain
Large dc voltage gain: 100 dB
Wide bandwidth (unity gain): 1 MHz (temperature compensated)