Multistage noise shaping sigma-delta modulator
US9859916B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 25, 2017 |
| Grant date | Jan 2, 2018 |
| Priority date | — |
| Expiry date | Jul 25, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M3/458
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A sigma-delta modulator including at least first and second sub-modulators, each including an analog integration circuit, the analog integration circuit of the first sub-modulator having an output node connected to an input node of the analog integration circuit of the second sub-modulator, the modulator further comprising a coupling capacitor having a first electrode connected to an output node of the analog integration circuit of the second sub-modulator, and a comparator having its input coupled to the first electrode of the coupling capacitor by a first switch and to a second electrode of the coupling capacitor by a second switch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.