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Texas Instruments OPAx992/OPAx992-Q1 Low Noise Op Amp

Texas Instruments OPAx992/OPAx992-Q1 Low-Offset-Voltage Low Noise Operational Amplifier (Op Amp) is a family of high voltage (40V) general-purpose operational amplifiers. These devices offer excellent DC precision and AC performance, including rail-to-rail input/output, low offset (±210µV, typ.), low offset drift (±0.25µV/°C, typ.) and low noise (7nV/√Hz at 1kHz, 4.4nV/√Hz at 10kHz).

Features such as differential and common-mode input voltage ranges to the supply rails, high short-circuit current (±65mA), and high slew rate (32V/µs) make the OPAx992/OPAx992-Q1 a flexible, robust, and high-performance op amp for high-voltage industrial applications. The Texas Instruments OPAx992/OPAx992-Q1 family of op amps is available in micro-size packages (WSON) and standard packages (SOT-23, SOIC, and TSSOP) and is specified from –40°C to 125°C. The OPAx992-Q1 devices are AEC-Q100 qualified for automotive applications.

Features

  • ±210µV low offset voltage
  • ±0.25µV/°C low offset voltage drift 
  • 7nV/√Hz at 1kHz, 4.4nV/√Hz broadband low noise 
  • 115dB high common-mode rejection 
  • ±10pA low bias current 
  • Rail-to-rail input and output
  • 10.6MHz GBW, unity-gain stable wide bandwidth
  • 32V/µs high slew rate
  • MUX-friendly/comparator inputs
    • Amplifier operates with differential inputs up to supply rail
    • The amplifier can be used in open-loop or as a comparator
  • 2.4mA per amplifier low quiescent current 
  • ±1.35V to ±20V, 2.7V to 40V wide supply 
  • Robust EMIRR performance

Applications

  • Multiplexed data-acquisition systems
  • Test and measurement equipment
  • Motor drive (power stage and control modules)
  • Power delivery (UPS, server, and merchant network power)
  • ADC driver and reference buffer amplifier
  • Programmable logic controllers
  • Analog input and output modules
  • High-side and low-side current sensing
  • High precision comparator

Datasheets

Functional Block Diagram

Block Diagram - Texas Instruments OPAx992/OPAx992-Q1 Low Noise Op Amp

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Published: 2022-03-15 | Updated: 2025-02-27