Reference Design for Extending the OPA857 Transimpedance Bandwidth
Description
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 250MHzAdjusting the gain of the OPA857 between 1-20kΩEvaluation module allows flexibility in testing the OPA857 in internal test mode or with an external photodiode
Applications
Product Categories
- Amplifiers
| Download the bill of materials for TIDA-00978 | Download |
Test Data
Get results faster with test and simulation data that's been verified.
Download the test file for TIDA-00978| Title | Updated | Type | Size (KB) | |
|---|---|---|---|---|
| TIDA-00978 CAD Files | 15 Aug 2016 | ZIP | 4080 | |
| TIDA-00978 Gerber | 15 Aug 2016 | ZIP | 243 | |
| TIDA-00978 PCB | 15 Aug 2016 | 781 | ||
| TIDA-00978 Assembly Drawing | 15 Aug 2016 | 178 | ||
| TIDA-00978 BOM | 15 Aug 2016 | 62 | ||
| TIDA-00978 Schematic | 15 Aug 2016 | 271 |