OPA2188AIDR

The OPA2188 operational amplifier uses auto-zero technology to provide low offset voltage (25 μV, maximum) and near-zero drift over time and temperature range. These miniature, high-precision, low quiescent current amplifiers offer high input impedance and rail-to-rail outputs that swing within 15 mV of the supply rails. The input common-mode range includes the negative supply rail. Single or dual supplies can be used in the range of +4.0 V to +36 V (±2 V to ±18 V). The OPA2188 is available in the miniature small-outline package (MSOP)-8 and small-outline package (SO)-14. This device is specified for operation from –40 °C to +105 °C.

Applications

• Bridge amplifier
• Strain gauge
• Test equipment
• Inverter applications
• Temperature measurement
• Electronic scale
• Medical instrumentation
• Resistance temperature detector
• Precision active filter

Key features

• Low offset voltage: 25μV (max)
• Zero drift: 0.03μV/°C
• Low noise: 8.8nV/√Hz
• 0.1Hz to 10Hz noise: 0.25μVp-p
• Excellent DC accuracy:
• Power supply rejection ratio (PSRR): 142dB
• Common-mode rejection ratio (CMRR): 146dB
• Open-loop gain: 136dB
• Gain bandwidth: 2MHz
• Quiescent current: 475μA (max)
• Wide supply voltage: ±2V to ±18V
• Rail-to-rail output
• Input includes negative supply rail
• RFI-filtered inputs
• Compact package