Analogue-to-digital converter and method for using the same
US7777662B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 23, 2008 |
| Grant date | Aug 17, 2010 |
| Priority date | — |
| Expiry date | Oct 23, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/806
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An analogue-to-digital (A/D) converter converts an analogue input signal to a digital code representing the analogue input signal. The A/D converter includes a comparator for comparing the input signal with a reference signal, a search logic block for determining the digital code, and an A/D converter arranged for receiving input from the search logic block and for providing the reference signal to be applied to the comparator. At least a first portion of the A/D converter is implemented with equal capacitors and may be controlled by a thermometer coded signal. Additionally, the A/D converter may include a second portion implemented using binary weighted capacitors controlled by a thermometer coded or binary coded signal. The A/D converter may also include a plurality of A/D converters coupled by an analogue addition circuit or a weighted summing amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.