OPA189 High-Precision Operational Amplifier

Texas Instruments' OPA189 14 MHz, MUX-friendly, low-noise, zero-drift, RRO, CMOS precision operational amplifier

Image of Texas Instruments' OPA189 High-Precision Operational AmplifierTexas Instruments' OPA189 high-precision operational amplifier is an ultra-low noise, fast-settling, zero-drift device that provides rail-to-rail output operation and features a unique MUX-friendly architecture and controlled startup system. These features and excellent AC performance, combined with only 0.4 µV of offset voltage and 0.005 µV/°C of drift over temperature, makes the OPA189 well-suited for precision instrumentation, signal measurement, and active filtering applications. Moreover, the MUX-friendly input architecture prevents inrush current when applying large input differential voltages which improves settling performance in multi-channel systems, all while providing robust ESD protection during shipment, handling, and assembly. All versions are specified from -40°C to +125°C.

Features
  • Ultra-high precision:
    • Zero-drift: 0.005 µV/°C
    • Ultra-low offset voltage: 3 µV (max.)
  • Excellent DC precision:
    • CMRR: 168 dB
    • Open-loop gain: 170 dB
  • Low noise:
    • en at 1 kHz: 5.2 nV/√Hz
    • 0.1 Hz to 10 Hz noise: 0.1 µVPP
  • Wide supply range: 4.5 V to 36 V
  • Excellent dynamic performance:
    • Gain bandwidth: 14 MHz
    • Slew rate: 20 V/µs
    • Fast settling: 10 V step, 0.01% in 1.1 µs
  • Robust design:
    • MUX-friendly inputs
    • RFI/EMI filtered inputs
  • Wide supply range: 4.5 V to 36 V
  • Quiescent current: 1.7 mA (max.)
  • Rail-to-rail output
  • Input includes negative rail
Applications
  • Precision multi-channel systems
  • Bridge amplifiers
  • Strain gauges
  • Temperature measurement
  • Resistance temperature detectors

OPA189 High-Precision Operational Amplifier

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
IC OPAMP ZERO-DRIFT 1 CIRC 8SOICOPA189IDIC OPAMP ZERO-DRIFT 1 CIRC 8SOIC1 - Immediate
9975 - Factory Stock
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Published: 2018-03-20