WIDEBAND OPERATIONAL AMPLIFIER

05-07-2019

The OPA855 decompensated amplifier from Texas Instruments is now available through Mouser Electronics. Designed as a wideband, low-noise, bipolar-input operational amplifier, the OPA855 excels in high bandwidth transimpedance and voltage amplifier applications. The 8GHz gain-bandwidth product of the OPA855 enables high-gain configurations while maintaining wide closed-loop bandwidth. Additionally, the low input-voltage noise of 0.98nV/√Hz minimises noise contribution from the amplifier, and the high slew rate of 2750V/µs enables wide output voltage swings.

For transimpedance amplifier applications, the OPA855 features a low input capacitance of only 0.8pF, which minimises the total circuit input capacitance and enables higher-speed designs. It also uses a unique package pinout design that simplifies the layout of the feedback network while simultaneously isolating pin-to-pin capacitance between the input and feedback connections. This design reduces the total parasitic capacitance around the amplifier’s feedback network, allowing for high-gain transimpedance amplifier designs to achieve wide bandwidth.

Applications include use in optical time-of-flight systems with a time-to-digital converter, such as Texas’s TDC7201. It can also be used to drive a high-speed analog-to-digital converter in high-resolution lidar systems with a differential output amplifier, such as Texas’s THS4541 or LMH5401.

The OPA855 is the latest addition to Texas’s family of ultra-wide bandwidth op amps, which also includes the FET-input OPA858 and OPA859. This family of amplifiers is ideal for wideband transimpedance circuits as well as high-speed data acquisition systems, low-noise front ends, and more. The device is supported by the dedicated OPA855DSGEVM op amp evaluation module and the general-purpose DEM-OPA-WSON8-EVM unpopulated evaluation board.

Mouser Electronics
+852 3756 4700
au.mouser.com

TO LEARN MORE, CONTACT

RELATED NEWS

  1. Making sure you’ve got the right work surface is an important consideration when setting up a production facility or a workshop. 
    BAC Systems helps you carefully plan workshop layouts so that you can work the way you want to, fitting everything efficiently in the available space. Part of that...
  2. A specialist supplier of steel tube and pipe, Austube Mills (part of the InfraBuild Group) is benefiting from a low-maintenance, time-saving, and safe hydraulic clamping solution for its steel slitters at its Acacia Ridge plant in Queensland.
    Austube Mills Acacia Ridge, which has been manufacturing...
  3. When it comes to electromagnets, can the words “sustainable” and “heavy-duty” ever be used together? With the emergence of Permanent-Electromagnet technology, the answer may finally be ‘yes’. 
    Steel forms the backbone of our lives. Worldwide production of the metal exceeded 1.9 billion tonnes in...