| Number of channels (#) | 1 |
| Total supply voltage (Max) (+5V=5, +/-5V=10) | 36 |
| Total supply voltage (Min) (+5V=5, +/-5V=10) | 4.5 |
| Vos (offset voltage @ 25 C) (Max) (mV) | 0.004 |
| GBW (Typ) (MHz) | 5 |
| Features | EMI Hardened, MUX Friendly, Zero Drift |
| Slew rate (Typ) (V/us) | 10 |
| Rail-to-rail | Out |
| Offset drift (Typ) (uV/C) | 0.003 |
| Iq per channel (Typ) (mA) | 0.85 |
| Vn at 1 kHz (Typ) (nV/rtHz) | 5.7 |
| CMRR (Typ) (dB) | 168 |
| Rating | Catalog |
| Operating temperature range (C) | -40 to 125 |
| Input bias current (Max) (pA) | 350 |
| Output current (Typ) (mA) | 65 |
| Architecture | CMOS |
| THD + N @ 1 kHz (Typ) (%) | 0.00008 |
- 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
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.
