High-speed comparator for analog-to-digital converter
US9455695B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 2015 |
| Grant date | Sep 27, 2016 |
| Priority date | — |
| Expiry date | Aug 25, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/44
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A comparator for an analog-to-digital converter is provided. The comparator includes a differential amplifier unit that receives a sampling signal and provides an output signal, based on a voltage provided by the sampling signal. The differential amplifier unit includes an input stage that receives the sampling signal and integrates a current on the integration nodes based on potentials of the sampling signal. The comparator includes a sense amplifier coupled with the integration nodes that detects a potential difference and amplifies the potential difference to generate the output signal. The comparator includes a charge injection circuit (30) to inject equal charges into the integration nodes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.