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OPA189 - Operational Amplifiers

Description

The OPA189, OPA2189, and OPA4189 (OPAx189) high-precision operational amplifiers are ultra-low noise, fast-settling, zero-drift devices that provide railto-rail output operation and feature a unique MUXfriendly architecture and controlled start-up system.

Features

  • Ultra-high precision:.
  • Zero-drift: 0.005 μV/°C (OPA189).
  • Ultra-low offset voltage: 3 μV maximum (OPA189).
  • 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.
  • 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:.

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Full PDF Text Transcription

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OPA189, OPA2189, OPA4189 SBOS830I – SEPTEMBER 2017 – REVISED OCTOBER 2021 OPAx189 Precision, Lowest-Noise, 36-V, Zero-Drift, 14-MHz, MUX-Friendly, Rail-to-Rail Output Operational Amplifiers 1 Features • Ultra-high precision: – Zero-drift: 0.005 μV/°C (OPA189) – Ultra-low offset voltage: 3 μV maximum (OPA189) • 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 • 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.
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