Analog-to-digital converter with power supply-based reference
US9281833B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | May 28, 2012 |
| Grant date | Mar 8, 2016 |
| Priority date | — |
| Expiry date | Jan 8, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A measurement circuit is provided for measuring the resistance of a variable resistance element biased with an external voltage supply. The measurement circuit includes an analog-to-digital converter (ADC) and a reference generator connected with the ADC. The ADC is operative to receive a reference voltage and a first voltage developed across the variable resistance element, and to generate a digital output signal indicative of a relationship between the first voltage and the reference voltage. The reference generator is operative to generate the reference voltage as a function of the external voltage supply.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.