Very high dynamic-range switched capacitor ADC with large input impedance for applications tolerating increased distortion and noise at large input signal levels
US9503121B2 · kind B2 · utility
4Cited by
3References
25Claims
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Key dates
| Filing date | Oct 17, 2014 |
| Grant date | Nov 22, 2016 |
| Priority date | — |
| Expiry date | May 21, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M3/458
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A modulator is configured to respond to input swings by providing a feedback voltage via a feedback path to compromise an increase in noise and distortion power with increasing signal power at signal levels exceeding a predetermined threshold. A digital-to-analog converter (DAC) generates a feedback voltage with a resistor string biased with a given current and switches as a function of an input value to mitigate the voltage swing at a summing node.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.