型号OPA4189
品牌
分类精密运算放大器 (Vos<1mV)
描述四路、14MHz、支持多路复用器、零漂移、轨到轨输出、精密运算放大器
相关操作
产品概述

参数

Number of channels 4
Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 36
Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 4.5
Vos (offset voltage at 25°C) (max) (mV) 0.003
GBW (typ) (MHz) 14
Features EMI Hardened, High Cload Drive, Zero Drift
Slew rate (typ) (V/µs) 20
Rail-to-rail Out
Offset drift (typ) (µV/°C) 0.005
Iq per channel (typ) (mA) 1.3
Vn at 1 kHz (typ) (nV√Hz) 5.2
CMRR (typ) (dB) 168
Rating Catalog
Operating temperature range (°C) -40 to 125
Input bias current (max) (pA) 500
Iout (typ) (A) 0.065
Architecture CMOS
Input common mode headroom (to negative supply) (typ) (V) -0.1
Input common mode headroom (to positive supply) (typ) (V) -2.5
Output swing headroom (to negative supply) (typ) (V) 0.02
Output swing headroom (to positive supply) (typ) (V) -0.02
THD + N at 1 kHz (typ) (%) 0.00006

封装 | 引脚 | 尺寸

SOIC (D) 14 51.9 mm² 8.65 x 6
TSSOP (PW) 14 32 mm² 5 x 6.4

特性

  • 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

说明

The OPA189, OPA2189, and OPA4189 (OPAx189) high-precision operational amplifiers are ultra-low noise, fast-settling, zero-drift devices that provide rail-to-rail output operation and feature a unique MUX-friendly 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 single-channel version, make the OPAx189 a great choice 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 multichannel systems, all while providing robust ESD protection during shipment, handling, and assembly.

All versions are specified from –40°C to +125°C.