Semiconductor device comprising analog to digital converters sharing reference capacitor and system on chip comprising the same
US9503117B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 24, 2016 |
| Grant date | Nov 22, 2016 |
| Priority date | — |
| Expiry date | Feb 24, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/468
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Provided are a semiconductor device and a System on Chip (SoC). The semiconductor device includes a reference capacitor that receives a reference voltage from a reference voltage generator, a first successive approximation register analog-to-digital converter (SAR ADC), for converting a first analog signal into a first digital signal, using a first sampling capacitor that has a first capacitance and is connected to the reference capacitor through a first switching element, and a second sampling capacitor that has a second capacitance that is less than that of the first sampling capacitor, connected to the reference capacitor through a second switching element, a second SAR ADC, for converting a second analog signal into a second digital signal, using a third sampling capacitor that has a third capacitance, connected to the reference capacitor through a third switching element, and a fourth sampling capacitor that has a fourth capacitance that is less than that of the third sampling capacitance connected to the reference capacitor through a fourth switching element, and a controller configured to connect the first switching element and the third switching element to the reference ca…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.