Trans-impedance amplifier (TIA) with a T-coil feedback loop
US10826448B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 11, 2019 |
| Grant date | Nov 3, 2020 |
| Priority date | — |
| Expiry date | Apr 15, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45516
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A transimpedance amplifier includes a T-coil in its feedback loop to expand its bandwidth. The transimpedance amplifier includes an amplifier that converts and amplifies an input current signal to an intermediary voltage signal. One terminal of the T-coil is coupled to a resistor in the feedback loop which is coupled to the input of the amplifier. Another terminal of the T-coil is coupled to the output of an amplifier. The bridge point of the T-coil is coupled to the output terminal of the transimpedance amplifier which outputs an output voltage. The T-coil includes two inductors that are mutually coupled such that a current is induced to compensate for the leakage current caused by the parasitic capacitance of the transimpedance amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.