Low power analog-to-digital converter for sensing geophone signals
US9335429B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 3, 2015 |
| Grant date | May 10, 2016 |
| Priority date | — |
| Expiry date | Mar 3, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M3/454
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A low power analog-to-digital converter configured to sense sensor signals may include a loop filter and a feedback digital-to-analog converter. The loop filter may have a loop filter input configured to receive an input current signal from a sensor and generate an output signal responsive to the input current signal. The feedback digital-to-analog converter may have a feedback output configured to generate a current-mode or charge-mode feedback output signal responsive to the output signal, the feedback output coupled to the loop filter input in order to combine the input current signal and the feedback output signal at the input.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.