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Texas Instruments OPA855/OPA855-Q1 Transimpedance Amplifiers

Texas Instruments OPA855/OPA855-Q1 Decompensated Transimpedance Amplifiers provide a wideband and low-noise with bipolar inputs ideal for wideband transimpedance and voltage amplifier applications. The OPA855/OPA855-Q1 can be configured as a transimpedance amplifier (TIA). When used as a TIA, the 8GHz gain bandwidth product (GBWP) enables high closed-loop bandwidths at transimpedance gains of up to tens of kΩs.

The device operates in optical time-of-flight (ToF) systems where the OPA855 is used with time-to-digital converters. The TDC7201, a Time-to-Digital Converter is such a device. The OPA855/OPA855-Q1 can drive a high-speed analog-to-digital converter (ADC) in high-resolution LIDAR systems when using a differential output amplifier like the THS4541 or LMH5401.

Features

  • 8GHz high-gain bandwidth product
  • Decompensated, gain ≥ 7V/V (Stable)
  • 0.98nV/√Hz low input voltage noise
  • 2750V/µs slew rate
  • 3VPP total output swing
  • 3.3V to 5.25V supply voltage range
  • 17.8mA quiescent current
  • 8-pin WSON package
  • –40°C to +125°C temperature range
  • Low input capacitance:
    • 0.6pF common-mode
    • 0.2pF differential
  • Wide input common-mode range:
    • 0.4V from a positive supply
    • 1.1V from a negative supply

Applications

  • High-speed transimpedance amplifier
  • Laser distance measurement
  • CCD output buffer
  • High-speed buffer
  • Optical Time Domain Reflectometry (OTDR)
  • High-speed active filter
  • 3D scanner
  • Silicon Photomultiplier (SiPM) buffer amplifier
  • Photomultiplier tube post-amplifier

Datasheets

Block Diagram

Block Diagram - Texas Instruments OPA855/OPA855-Q1 Transimpedance Amplifiers

Development Tools

Texas Instruments Universal Operational Amplifier EVMs

General purpose blank circuit boards that simplify the evaluation of operational amplifiers.

Learn Moreacerca de Texas Instruments Universal Operational Amplifier EVMs View Productsrelacionado con Texas Instruments Universal Operational Amplifier EVMs

Texas Instruments Universal DIY Amplifier Circuit EVMs

Provides engineers and do it yourselfers (DIYers) with real-world amplifier circuits.

Learn Moreacerca de Texas Instruments Universal DIY Amplifier Circuit EVMs View Productsrelacionado con Texas Instruments Universal DIY Amplifier Circuit EVMs

Texas Instruments OPA855DSGEVM Op Amp Evaluation Module (EVM)

Designed to demonstrate the functionality & versatility of the single OPA855 in the WSON-8 package.

Learn Moreacerca de Texas Instruments OPA855DSGEVM Op Amp Evaluation Module (EVM) View Productsrelacionado con Texas Instruments OPA855DSGEVM Op Amp Evaluation Module (EVM)
Publicado: 2018-11-21 | Actualizado: 2025-07-10