Digital-to-analog converter circuit with linear programmable gain stage
US12375095B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 2023 |
| Grant date | Jul 29, 2025 |
| Priority date | — |
| Expiry date | Jan 30, 2044 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/66
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A circuit includes a digital-to-analog converter and a gain stage. The gain stage includes: an operational amplifier; a variable gain network; and a leakage current control circuit. A first input of the operational amplifier is coupled to an input of the gain stage. An output of the operational amplifier is coupled to an output of the gain stage. A first terminal of the variable gain network is coupled to the second input of the operational amplifier. A second terminal of the variable gain network is coupled to the output of the operational amplifier. A first terminal of the leakage current control circuit is coupled to the output of the operational amplifier. A second terminal of the leakage current control circuit coupled to a third terminal of the variable gain network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.