1 Features

• Low offset voltage: 25 μV (maximum)

• Zero drift: 0.03 μV/°C

• Low noise: 8.8 nV/√Hz

– 0.1-Hz to 10-Hz Noise: 0.25 μVPP

• Excellent dc precision:

– PSRR: 142 dB

– CMRR: 146 dB

– Open-loop gain: 136 dB

• Gain bandwidth: 2 MHz

• Quiescent current: 510 μA (Maximum)

• Wide supply range: ±2 V to ±18 V

• Rail-to-rail output

• Input includes negative rail

• RFI filtered inputs

• MicroSIZE packages

2 Applications

• Weight scale

• Analog input module

• Flow transmitter

• Battery test

• DC power supply, ac source, electronic load

• Data acquisition (DAQ)

• Semiconductor test

3 Description

The OPA188 operational amplifier uses TI's

proprietary auto-zeroing techniques to provide low

offset voltage (25-μV maximum) and near zero-drift

over time and temperature. This miniature, highprecision,

low-quiescent current amplifier offers high

input impedance and rail-to-rail output swing within 15

mV of the rails. The input common-mode range

includes the negative rail. Either single or dual

supplies can be used in the range from 4 V to 36 V

(±2 V to ±18 V).

The single version is available in the MicroSIZE SOT-

23-5, MSOP-8, and SO-8 packages. All versions are

specified for operation from –40°C to +125°C.