On-chip resistor divider compensation with a 2Vrms input
US9525388B1 · kind B1 · utility
2Cited by
3References
20Claims
0Family size
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Key dates
| Filing date | Jul 3, 2014 |
| Grant date | Dec 20, 2016 |
| Priority date | — |
| Expiry date | Jul 3, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45531
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A new compensation system for an audio input reduces noise by matching feedback ratios in the positive and negative paths. A variable resistance network allows for fine control of resistance trimming in one of the signal paths, which allows for compensation between tolerance of resistors that are external to an integrated circuit and those that are internal to the integrated circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.