OPA4182IDT

OPA182, OPA2182, and OPA4182 (OPAx182) are ultra-low noise, fast-settling, zero-drift, high-precision op amps. These devices offer rail-to-rail output operation and feature a unique multiplexer-friendly architecture with a controlled startup system. They also deliver excellent AC performance, along with an offset voltage of only 0.45μV and a temperature drift of 0.003μV/°C. All these characteristics make the OPAx182 an ideal choice for data acquisition, battery testing, analog input modules, weigh scales, and any other system requiring high DC accuracy and low noise. The multiplexer-friendly input architecture prevents surge currents when large differential input voltages are applied, improving settling performance in multichannel systems. In addition, the controlled startup system suppresses inrush current during power rail ramp-up while providing robust ESD protection during shipping, handling, and assembly. The device is rated for an operating temperature range of –40°C to +125°C.

Applications

• Battery Testing
• DC Power Supplies, AC Power Supplies, Electronic Loads
• Data Acquisition (DAQ)
• Semiconductor Testing
• Weighing Scales
• Analog Input Modules
• Flow Transmitters

Key features

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