Low noise trans-impedance amplifier
US11689168B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 5, 2022 |
| Grant date | Jun 27, 2023 |
| Priority date | — |
| Expiry date | May 5, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/294
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A trans-impedance amplifier (TIA) may include an input stage and an output driving stage. The input stage may include a pair of input PMOS transistors, a pair of input NMOS transistors, and a pair of differential voltage input nodes. The output driving stage may include a pair of output circuits, each may include a first pair of PMOS and NMOS transistors electrically connected in parallel, a second pair of PMOS and NMOS transistors electrically connected in series, a pair of capacitors electrically connected in series, a differential output node, a third PMOS transistor, and a fourth pair of NMOS transistors cross-coupled between the pair of output circuits of the output driving stage. The structure can lead to a reduced noise level and a reduced peak transient current level of the TIA.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.