LM2904N

LM2904N 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 electronic interfaces without requiring any additional power supply. In 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.

LM2904N Features

? Large DC voltage gain: 100 dB
? Low input offset current: 2 nA
? Large output voltage swing 0 V to [(VCC +) -1.5 V]
? Frequency compensation implemented internally
? Input common-mode voltage range includes negative rail
? Low input bias current: 20 nA (temperature compensated)
? Differential input voltage range equal to the power supply voltage
? Wide bandwidth (unity gain): 1.1 MHz (temperature compensated)
? Very low supply current/amplifier, essentially independent of supply voltage

LM2904N Applications

Active filters
DC gain blocks
Transducer amplifier
Conventional op-amp circuits
4- to 20-mA current loop transmitters
General signal conditioning and amplification