Matched digital-to-analog converters
US11539374B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Aug 30, 2021 |
| Grant date | Dec 27, 2022 |
| Priority date | — |
| Expiry date | Aug 30, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/822
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A voltage ladder is used to generate reference voltages. The voltage ladder is used by multiple digital-to-analog converters (DACs). In particular, the voltage ladder is used by multiple pulse-width modulation (PWM) DACs. Having multiple DACs utilize a common voltage ladder for their reference voltages reduces mismatched output voltages between DACs. Having multiple DACs utilize the common voltage ladder helps ensure that the reference voltages used by different DACs are not affected by process, voltage, and/or temperature variations in the reference voltages that would occur when using different voltage ladders for each DAC.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.