OPA857EVM-978
OPA857 Bandwidth Extension Evaluation Module
OPA857EVM-978
Overview
The OPA857 is a wideband, ultralow noise transimpedance amplifier (TIA) targeted at photodiode monitoring applications. The OPA857 has two selectable gain configurations of 5kΩ and 20kΩ while maintaining a nearly constant closed-loop bandwidth in excess of 100MHz . In this reference design, external resistors are added in parallel with the internal resistors to take advantage of the high-speed amplifier core to extend the transimpedance bandwidth of the amplifier.
Features
- Extending the bandwidth of the OPA857 from 100MHz to greater than 250MHz
- Adjusting the gain of the OPA857 between 1-20kΩ
- Evaluation module allows flexibility in testing the OPA857 in internal test mode or with an external photodiode
Transimpedance amplifiers
Order & start development
Evaluation board
OPA857EVM-978 – TIDUBX71_TIDA-00978A
Technical documentation
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| Type | Title | Date | |
|---|---|---|---|
| * | User guide | Extending Bandwith of the OPA857 Design Guide | Jul. 25, 2016 |
| More literature | OPA857EVM-978 EU Declaration of Conformity (DoC) | Jan. 02, 2019 |
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