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OPA187 Zero-Drift Op-Amp
Texas Instruments' rail-to-rail output, low-power 36 V op-amp is unity-gain stable and free from unexpected output phase reversal
Texas Instruments' OPA187 op-amp uses auto-zeroing techniques to simultaneously provide low offset-voltage (1 µV), and near zero-drift over time and temperature. The miniature, high-precision, low-quiescent current amp offers high-input impedance and rail-to-rail output swing within 5 mV of the rails into high-impedance loads. The input common-mode range includes the negative rail. Either single or dual supplies can be used in the range of 4.5 V to 36 V (±2.25 V to ±18 V).
The OPA187 is available in micro-sized 8-pin VSSOP, 5-pin SOT-23, and 8-pin SOIC packages. The device is specified for operation from -40°C to +125°C.
Features
- Low offset-voltage: 10 µV (max.)
- Zero-drift: 0.001 µV/°C
- Low noise: 15 nV/√Hz
- Wide supply voltage: ±2.25 V to ±18 V
- PSRR: 160 dB
- CMRR: 140 dB
- AOL: 160 dB
- Quiescent current: 100 µA
- Rail-to-rail output operation
- Input includes negative rail
- Low bias current: 100 pA (typ.)
- EMI filtered inputs
- Micro-sized packages
Applications
- Bridge amplifiers
- Strain gauges
- Test and measurement equipment
- Transducer applications
- Temperature measurements
- Electronic scales
- Medical instrumentation
- RTD amplifiers
- Precision active filters
- Low-side current monitoring
2019-03-01 תאריך הפרסום
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