Extremely-fine resolution sub-ranging current mode Digital-Analog-Converter using Sigma-Delta modulators
US10425099B1 · kind B1 · utility
11Cited by
7References
20Claims
0Family size
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Key dates
| Filing date | Nov 29, 2018 |
| Grant date | Sep 24, 2019 |
| Priority date | — |
| Expiry date | Nov 29, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/742
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A X-bit Digital-to-Analog Converter (DAC) circuit includes an effective X/2-bit coarse DAC configured to produce a coarse bitstream (CBS) from a digital input DC1 using an nth order Sigma-Delta (ΣΔ) modulator, and to provide a coarse current source based on the CBS, wherein X is an even integer and n is an integer; an effective X/2-bit fine DAC configured to produce a fine bitstream (FBS) from a digital input DC2 using a 1st order ΣΔ modulator, and to provide a fine current source based on the FBS; and an output configured to form a voltage from the combination of the coarse current source and the fine current source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.