Texas Instruments OPAx388/OPAx388-Q-1 Precision Op Amps

Texas Instruments OPAx388/OPAx388-Q-1 Precision Operational Amplifiers are ultra-low noise, fast-settling, zero-drift, zero-crossover devices that provide rail-to-rail input and output operation. These devices offer excellent ac performance, combined with only 0.25µV of offset and 0.005µV/°C of drift over temperature. This feature makes the OPAx388/OPAx388-Q-1 ideal for driving high-precision, analog-to-digital converters (ADCs) or buffering the output of high-resolution, digital-to-analog converters (DACs). This design results in superior performance when driving analog-to-digital converters (ADCs) without degradation of linearity. The OPA388/OPA388-Q-1 (single version) is available in the VSSOP-8, SOT23-5, and SOIC-8 packages. The OPA2388/OPA2388-Q-1 (dual version) is offered in the VSSOP-8 and SO-8 packages. The OPA4388/OPA4388-Q-1 (quad version) is provided in the TSSOP-14 and SO-14 packages. The Texas Instruments OPAx388-Q-1 devices are AEC-Q100 qualified for automotive applications.

Features

  • ±0.25µV ultra-low offset voltage 
  • ±0.005µV/°C zero-drift 
  • 140dB CMRR true RRIO zero-crossover 
  • 7.0nV√Hz at 1kHz low noise 
  • No 1/f Noise (140nVPP (0.1Hz to 10Hz))
  • 2µs (1V to 0.01%) fast settling 
  • 10MHz gain bandwidth 
  • 2.5V to 5.5V single supply 
  • ±1.25V to ±2.75V dual supply 
  • 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

Applications

  • Bridge amplifiers
  • Strain gauges
  • Test equipment
  • Current shunt measurement
  • Thermocouples, thermopiles
  • Electronic scales
  • Medical instrumentation
  • Resistor thermal detectors
  • Precision active filters

Functional Block Diagram

Block Diagram - Texas Instruments OPAx388/OPAx388-Q-1 Precision Op Amps
Publicado: 2017-02-10 | Actualizado: 2022-03-28