OPA182IDBVR

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 startup 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.

Applications

• Battery test
• DC power supply, ac source, electronic load
• Data acquisition (DAQ)
• Semiconductor test
• Weigh scale
• Analog input module
• Flow transmitter

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:
• en at 1 kHz: 5.7 nV/√Hz
• 0.1 Hz to 10 Hz noise: 0.12 μVPP
• 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