Analog-to-digital and digital-to-analog converter, related integrated circuit, electronic system and method
US10771075B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 2019 |
| Grant date | Sep 8, 2020 |
| Priority date | — |
| Expiry date | May 24, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/825
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A converter circuit is used to selectively convert an analog input voltage into a digital output signal or a digital input signal into an analog output voltage as a function of a mode signal. The converter circuit includes a control circuit configured to generate a start-of-conversion signal. A ramp generator is configured to, when the mode signal indicates an analog-to-digital conversion, generate a timer stop signal after a time interval that is determined as a function of the value of the analog input voltage, thereby implementing an analog-to-time conversion. When the mode signal indicates a digital-to-analog conversion, ramp generator is configured to vary the ramp signal until a ramp stop signal is set and, in response to the ramp stop signal, determine the analog output voltage as a function of the ramp signal, thereby implementing a time-to-analog conversion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.