OPA2189
Overview
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. These features and excellent ac performance, combined with only 0.4 µV of offset voltage and 0.005µV/°C of drift over temperature for the singlechannel version, make the OPAx189 a great choice for precision instrumentation, signal measurement, and active filtering applications.
- 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: 1.7 mA (maximum)
- Rail-to-rail output
- Input includes negative rail
