High precision sampled analog circuits
US9847789B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 7, 2017 |
| Grant date | Dec 19, 2017 |
| Priority date | — |
| Expiry date | Mar 7, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/804
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A sampled analog circuit is divided into at least two segments, each segment receiving sampled analog data and a respective subset of bits of a filter coefficient. The at least two segments can have digital-to-capacitance circuits with substantially identical ranges of capacitance values. One or more outputs from the segments can be scaled to reflect a position of the subset of bits in the bits of the filter coefficient, and thereafter added in the analog domain to produce a filtered output signal that may then be digitized. Alternatively, the outputs from the segments may be digitized before being scaled and/or added in the digital domain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.