Analog-to-digital conversion apparatus and method capable of achieving fast settling
US9041575B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 9, 2014 |
| Grant date | May 26, 2015 |
| Priority date | — |
| Expiry date | Sep 9, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/466
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method utilized in an analog-to-digital conversion apparatus, for converting an analog input signal into a digital output signal including a first portion and a second portion, includes: using a comparator circuit to compare the analog input signal with at least one first reference level to generate a preliminary comparison result, the at least one first reference level being used for determining the first portion; estimating the first portion according to the preliminary comparison result; based on the preliminary comparison result, performing the successive approximation procedure to obtain a posterior comparison result according to a plurality of second reference levels, the second reference levels being used for determining the second portion; and, estimating the second portion according to the posterior comparison result. The preliminary and posterior comparison results are generated by the comparator circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.