Texas Instruments' OPA2188 series operational amplifiers use TI proprietary auto-zeroing techniques to provide low offset voltage (25 µV, max), and near zero-drift over time and temperature. These miniature, high-precision, low quiescent current amplifiers offer high input impedance and rail-to-rail output swing within 15 mV of the rails. The input common-mode range includes the negative rail. Either single or dual supplies can be used in the range of +4.0 V to +36 V (±2 V to ±18 V). The single version is available in the MicroSIZE SOT23-5, MSOP-8, and SO-8 packages; the dual is offered in MSOP-8 and SO-8 packages; the quad is offered in SO-14 and TSSOP-14 packages. All versions are specified for operation from -40°C to +105°C.
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- Very low offset and drift
- Offset voltage: 25 µV (max)
- Offset voltage drift: 0.085 µV/°C max
- CMRR, PSRR, Aol = 130 dB (min)
- Noise voltage: 8.8 nV/√Hz at 1 kHz
- Low quiescent current: 475 µA (max)
- Low bias current: 160 pA (typ)
- Supply range: +4.0 V to +36 V or ±2 V to ±18 V
- Rail to rail output
- EMI/RFI filtered inputs
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- Electronic weigh scales
- Bridge amplifiers
- Strain gauges
- Automated test equipment
- Transducer amplifiers
- Medical instrumentations
- Resistor thermal detectors
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