November 2015

DocID028399 Rev 2

1/19

This is preliminary information on a new product now in development

or undergoing evaluation. Details are subject to change without notice.

www.st.com

LM2904AH

Low-power, dual operational amplifier

Datasheet - preliminary data

Features

Frequency compensation implemented

internally

Large DC voltage gain: 100 dB

Wide bandwidth (unity gain): 1.1 MHz

(temperature compensated)

Very low supply current/amplifier, essentially

independent of supply voltage

Low input bias current: 20 nA (temperature

compensated)

Low input offset current: 2 nA

Input common-mode voltage range includes

negative rail

Differential input voltage range equal to the

power supply voltage

Large output voltage swing

Related products

See LM2904WH for enhanced ESD

performances

Description

This circuit consists of two independent, high

gain operational amplifiers (op amps) that have

frequency compensation implemented internally.

They are designed specifically for automotive and

industrial control systems. The circuit operates

from a single power supply over a wide range of

voltages. The low power supply drain is

independent of the magnitude of the power

supply voltage.

Application areas include transducer amplifiers,

DC gain blocks and all the conventional op amp

circuits which can now be more easily

implemented in single power supply systems. For

example, these circuits can be directly supplied

from the standard 5 V which is used in logic

systems and easily provides the required

interface electronics without requiring any

additional power supply.

In the linear mode, the input common-mode

voltage range includes ground and the output

voltage can also swing to ground, even though

operated from a single power supply.