OPA188 - Texas Instruments

OPA188 Zero-Drift Operational Amplifier

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.

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: 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.