System including feedback circuit with digital chopping circuit
US8203471B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 4, 2010 |
| Grant date | Jun 19, 2012 |
| Priority date | — |
| Expiry date | Dec 22, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M3/454
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A system including a first circuit, a second circuit, and a feedback circuit. The first circuit is configured to provide input signals. The second circuit is configured to receive the input signals and provide digital output signals that correspond to the input signals. The feedback circuit includes a chopping circuit, an integrator circuit, and a digital to analog converter circuit. The chopping circuit is configured to receive the digital output signals and provide error signals that represent ripple error in the digital output signals. The integrator circuit is configured to accumulate the error signals and provide an accumulated error signal. The digital to analog converter circuit is configured to convert the accumulated error signal into an analog signal that is received by the second circuit to reduce the ripple error.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.