1 Features
1• Low Offset Voltage: 25 μV (Maximum)
• Zerø-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 OPA2188 operational amplifier uses TI
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 of 4 V to 36 V (±2
V to ±18 V).
The OPA2188 device is available in MSOP-8 and
SO-8 packages. The device is specified for operation
from –40°C to +105°C.