OPA388

OPA388, OPA2388, OPA4388 SBOS777D – NOVEMBER 2016 – REVISED JULY 2020 OPAx388 Precision, Zero-Drift, Zero-Crossover, True Rail-to-Rail, Input/Output Operational Amplifiers 1 Features Ultra-low offset voltage: ±0.25 µV Zero drift: ±0.005 µV/°C Zero crossover: 140-dB CMRR true RRIO Low noise: 7.0 nV√Hz at 1 kHz No 1/f noise: 140 nVPP (0.1 Hz to 10 Hz) Fast settling: 2 µs (1 V to 0.01%) Gain bandwidth: 10 MHz Single supply: 2.5 V to 5.5 V Dual supply: ±1.25 V to ±2.75 V True rail-to-rail input and output EMI/RFI filtered inputs Industry-standard packages: – Single in SOIC-8, SOT-23-5, and VSSOP-8 – Dual in SOIC-8 and VSSOP-8 – Quad in SOIC-14 and TSSOP-14 2 Applications Merchant network and server PSU Notebook PC power adapter design Weigh scale Lab and field instrumentation Battery test Electronic thermometer Temperature transmitter R3 25 k R4 5V 100 k RG REF5025 R4 100 k R2 25 k 5V 5V ± +SENSE 5V ± VOUT OPA388 OPA388 + R2 10 k GND + GND ±SENSE GND GND Load Cell 200 NŸ G=5+ RG The OPA388 in a High-CMRR, Instrumentation Amplifier Application 3 Description The OPAx388 (OPA388, OPA2388, and OPA4388) series of precision operational amplifiers are ultra-low noise, fast-settling, zero-drift, zero-crossover devices that provide rail-to-rail input and output operation. These features and excellent ac performance, combined with only 0.25 µV of offset and 0.005 µV/°C of drift over temperature, makes the OPAx388 a great ch...