Delta-sigma analog-to-digital converter and method for operating same
US8797200B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 6, 2011 |
| Grant date | Aug 5, 2014 |
| Priority date | — |
| Expiry date | Jul 6, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M3/456
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A delta-sigma analog-to-digital converter generates a digital signal as a function of an analog signal and a clock signal having a first phase and a second phase. The converter includes a first branch that applies an analog input signal, a feedback branch having a digital-to-analog converter that feeds back an analog reference signal, a loop filter, a quantizer, and a switch. The switch includes, and is timely correlated with, an output switch of the digital-to- analog converter. The switch functions to connect an input resistance on the first branch and disconnect the digital-to-analog converter during the first phase, and disconnects the input resistance and connects the digital-to-analog converter during the second phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.