OPA2182IDGKR

The OPA182, OPA2182, and OPA4182 (OPAx182) are ultra-low noise, fast-settling, zero-drift, high-precision operational amplifiers, These devices provide rail-to-rail output operation and feature a unique MUX-friendly architecture and controlled start-up system. These devices also feature excellent ac performance combined with only 0.45 µV of offset voltage and 0.003 µV/°C of drift over temperature. All these features make the OPAx182 a great choice for data acquisition, battery test, analog input modules, weigh scales, and any other systems requiring high dc precision and low noise.

The MUX-friendly input architecture prevents inrush current when applying large input differential voltages and improves settling performance in multichannel systems. Moreover, the controlled start-up system rejects any inrush current when ramping up the supply rails, all while providing robust ESD protection during shipment, handling, and assembly.

The device is specified from –40°C to +125°C.

Key Features

• Ultra-high precision:
  • Zero-drift: 0.003 µV/°C
  • Ultra-low offset voltage: 4 µV (maximum)
• Excellent dc precision:
  • CMRR: 168 dB
  • Open-loop gain: 170 dB
• Low noise:
  • e_n at 1 kHz: 5.7 nV/√Hz
  • 0.1-Hz to 10-Hz noise: 0.12 µV_PP
• Excellent dynamic performance:
  • Gain bandwidth: 5 MHz
  • Slew rate: 10 V/µs
  • Fast settling: 10-V step, 0.01% in 1.7 µs
• Robust design:
  • MUX-friendly inputs
  • RFI and EMI filtered inputs
• Wide supply: ±2.25 V to ±18 V, 4.5 V to 36 V
• Quiescent current: 0.85 mA
• Rail-to-rail output
• Input includes negative rail