1 Features

1• 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: 475 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

• Bridge Amplifiers

• Strain Gauges

• Test Equipment

• Transducer Applications

• Temperature Measurement

• Electronic Scales

• Medical Instrumentation

• Resistance Temperature Detectors

• Precision Active Filters

3 Description

The OPA4188 operational amplifier uses TI

proprietary auto-zeroing techniques to provide low

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

over time and temperature. These miniature, highprecision,

low quiescent current amplifiers offer high

input impedance and rail-to-rail output swing within

15 mV of the rails, making them ideal for industrial

applications. The input common-mode range includes

the negative rail. Either single or dual supplies can be

used in the range of 4 V to 36 V (±2 V to ±18 V).

The quad version is available in 14-pin SOIC and 14-

pin TSSOP packages. All versions are specified for

operation from –40°C to +125°C.