Back to Texas Instruments

Texas Instruments OPA188/OPA188-Q1 Precision Operational Amplifier

Texas Instruments OPA188/OPA188-Q1 Operational Amplifiers use TI proprietary auto-zeroing techniques to provide low offset voltage (25µV, max), and near zero-drift over time and temperature. This miniature, high-precision, low-quiescent current amplifier offers high input impedance and rail-to-rail output swing within 15mV of the rails.

The input common-mode range includes the negative rail. Either single or dual supplies can be used in the range of +4V to +36V (±2V to ±18V). The single version is available in the MicroSIZE SOT23-5, MSOP-8, and SO-8 packages. All versions are specified for operation from –40°C to +125°C. The OPA188-Q1 devices are AEC-Q100 qualified for automotive applications.

Features

  • Low Offset Voltage: 25µV (max)
  • Zero-Drift: 0.03µV/°C
  • Low Noise: 8.8nV/√Hz
    • 0.1Hz to 10Hz Noise: 0.25µVPP
  • Excellent DC Precision:
    • PSRR: 142dB
    • CMRR: 146dB
    • Open-Loop Gain: 136dB
  • Gain Bandwidth: 2MHz
  • Quiescent Current: 510µA (max)
  • Wide Supply Range: ±2V to ±18V
  • Rail-to-Rail Output
  • Input Includes Negative Rail
  • RFI Filtered Inputs
  • MicroSIZE Packages

Applications

  • Bridge Amplifiers
  • Strain Gauges
  • Transducer Applications
  • Temperature Measurement
  • Electronic Scales
  • Medical Instrumentation
  • Resistance Temperature Detectors

Block Diagram

Block Diagram - Texas Instruments OPA188/OPA188-Q1 Precision Operational Amplifier
Published: 2013-10-03 | Updated: 2022-03-11