Programmable analog-to-digital converter with bit conversion optimization
US6329938A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 15, 2000 |
| Grant date | Dec 11, 2001 |
| Priority date | — |
| Expiry date | Jun 15, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/004
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The present invention provides a programmable ADC with bit conversion optimization and method therefor. The programmable ADC includes an amplifier, a programmable clock generator, a comparator, a successive approximation logic, a digital-to-analog converter, and a voltage converter. The amplifier is arranged to sample and hold an input analog signal to be converted into N digital data bits. The programmable clock generator generates a clock signal for each of the N-bits to trigger setting of one of the N-bit digital data bits such that each of the N bits is set during a time optimized for each bit. The comparator is coupled to receive and compare the input analog signal with a successively approximated analog signal to generate a digital output signal. The successive approximation logic is configured to successively set each of the N-bits in response to the digital output signal and the clock signal to generate a successively approximated N-bit digital data. The digital-to-analog converter converts the successively approximated N-bit digital data into a successively approximated analog current signal. The voltage converter has a resistance value for converting the successively appr…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.