OPA2990 Low-Power Op-Amp

By Texas Instruments 180

OPA2990 Low-Power Op-Amp

Texas Instruments' OPA2990 high-voltage (40 V) general purpose op-amps offer excellent DC precision and AC performance including rail-to-rail input and output, low offset (±300 µV, typical), and low offset drift (±0.6 µV/°C, typical).

The OPA2990 devices feature differential and common-mode input voltage range to the supply rail, high short-circuit current (±80 mA), high slew rate (4.5 V/µs), and shutdown making them extremely flexible, robust, and high-performing for high-voltage industrial applications.

The OPA2990 op-amps are available in micro-size packages (X2QFN, WSON, and SOT-553) and standard packages (SOT-23, SOIC, and TSSOP). The op-amp devices are specified from -40°C to +125°C.

Features
  • Low offset voltage: ±300 µV
  • Low offset voltage drift: ±0.6 µV/°C
  • Low noise: 30 nV/√Hz at 1 kHz
  • High common-mode rejection: 115 dB
  • MUX-friendly/comparator inputs:
    • Amp operates with differential inputs up to the supply rail
    • Amp can be used in open-loop or as a comparator
  • Low bias current: ±20 pA
  • Rail-to-rail input/output
  • Wide bandwidth: 1.1 MHz GBW
  • High slew rate: 4.5 V/µs
  • Low quiescent current: 120 µA per amp
  • Wide supply: ±1.35 V to ±20 V, 2.7 V to 40 V
  • Robust EMIRR performance: 78 dB at 1.8 GHz
  • Differential and common-mode input voltage range to the supply rail
Applications
  • Multiplexed data-acquisition systems
  • Test and measurement equipment
  • Motor drives: power stages and control modules
  • Power delivery: UPS, servers, and merchant network power
  • ADC drivers and reference buffer amps
  • Programmable logic controllers
  • Analog input and output modules
  • High-side and low-side current-sensing
  • High-precision comparators

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