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OPA857 Bandwidth Extension Evaluation Module OPA857EVM-978 (ACTIVE)
Key Document
- Extending Bandwith of the OPA857 Design Guide
(PDF 1207 KB)
25 Jul 2016
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 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
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Technical Documents
User guides (1)
| Title | Type | Size (KB) | Date |
| 1207 | 25 Jul 2016 |
More literature (1)
| Title | Type | Size (KB) | Date |
| 38 | 02 Jan 2019 |
Related Products
TI Devices (2)
| Part Number | Name | Product Family |
|---|---|---|
| OPA857 | Ultralow-Noise, Wideband, Pseudo-Differential Output Transimpedance Amplifier | Special function amplifiers |
| OPA857-DIE | Low-Noise, Wideband, Selectable-gain, Transimpedance Amp | Special function amplifiers |
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