Differential transimpedance amplifier
US10425041B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 25, 2018 |
| Grant date | Sep 24, 2019 |
| Priority date | — |
| Expiry date | Jul 25, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45288
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Disclosed is a differential transimpedance amplifier (TIA). In the differential TIA, an input end of the first source follower is coupled to the first output end of a first differential amplification circuit. The output end of the first source follower is coupled to the second input end of a second differential amplification circuit with feedback and a first feedback resistor. The input end of a second source follower is coupled to the second output end of the first differential amplification circuit. The output end of the second source follower is coupled to the first input end of the second differential amplification circuit with feedback and a second feedback resistor. A photo diode and a dummy diode are coupled respectively to two input ends of the first differential amplification circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.