OPA855 GBWP Op-Amp

By Texas Instruments 100

OPA855 GBWP Op-Amp

Texas Instruments' OPA855 is a wideband, low-noise op-amp with bipolar inputs for wideband transimpedance and voltage amplifier applications. The device can be configured as a transimpedance amplifier (TIA) allowing the 8 GHz gain-bandwidth product (GBWP) to enable high closed-loop bandwidths at transimpedance gains of up to tens of kΩs.

The OPA855 package has a feedback pin (FB) that simplifies the feedback network connection between the input and the output. The op-amp is optimized to operate in optical time-of-flight (ToF) systems where it is used with time-to-digital converters. The device can be used to drive a high-speed analog-to-digital converter (ADC) in high-resolution LIDAR systems with a differential output amplifier.

  • High GBWP: 8 GHz
  • Decompensated, gain ≥ 7 V/V (stable)
  • Low input-voltage noise: 0.98 nV/√Hz
  • Slew rate: 2,750 V/µs
  • Supply voltage range: 3.3 V to 5.25 V
  • Temperature range: -40°C to +125°C
  • Package: 8-pin WSON
  • Low input-capacitance:
    • Common-mode: 0.6 pF
    • Differential: 0.2 pF
  • Wide input common-mode range:
    • 0.4 V from positive supply
    • 1.1 V from negative supply
  • Quiescent current: 17.8 mA
  • High-speed transimpedance amplifiers
  • Laser distance measurements
  • Optical time domain reflectometry (OTDR)
  • Silicon photomultiplier (SiPM) buffer amplifiers
  • Photomultiplier tube post amplifiers
  • CCD output buffers
  • High-speed buffers
  • High-speed active filters
  • 3D scanners

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