Pre-drive module of analog-to-digital converter, and analog-to-digital conversion device
US11621719B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 22, 2021 |
| Grant date | Apr 4, 2023 |
| Priority date | — |
| Expiry date | Dec 18, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/18
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Disclosed are a pre-drive module of an analog-to-digital converter and an analog-to-digital conversion device. The pre-drive module includes a sampling capacitor; a controller configured to output a reset control signal, a pre-sampling control signal, and a sampling control signal according to a preset timing sequence; a reset module configured to reset the sampling capacitor upon receiving the reset control signal; a first auxiliary drive circuit configured to amplify an input analog signal and output to the sampling capacitor for sampling upon receiving the sample control signal; and a second auxiliary drive circuit. The controller is configured to output the pre-sampling control signal before outputting the sampling control signal, control the second auxiliary drive circuit to amplify the input analog signal, and output to the sampling capacitor for pre-sampling, and when a charging voltage of the sampling capacitor during pre-sampling reaches a preset voltage value, output the sampling control signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.