Analog-to-digital converter, method of analog-to-digital conversion, and electronic apparatus
US12040814B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 8, 2023 |
| Grant date | Jul 16, 2024 |
| Priority date | — |
| Expiry date | Mar 8, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M3/452
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An analog-to-digital converter includes: a sample/hold circuit, which samples an analog signal, and outputs a first voltage; a digital-to-analog conversion circuit, which converts a digital signal to output a second voltage; an amplifier, which amplifies the first voltage and the second voltage; a noise shaping filter, which integrates a residual voltage corresponding to a difference between the amplified first voltage and the amplified second voltage, and generates a first integration voltage and a second integration voltage; a comparator, which compares a sum of the amplified first voltage, the first integration voltage, and the second integration voltage with the amplified second voltage; and a SAR logic, which outputs the digital signal according to a comparison result of the comparator, and controls the digital-to-analog conversion circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.