Comparison circuit
US9768758B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 27, 2016 |
| Grant date | Sep 19, 2017 |
| Priority date | — |
| Expiry date | Apr 27, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K5/2481
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A comparison circuit includes a comparator having a first input terminal receiving a first input voltage through a first capacitor, and a second input terminal receiving a second input voltage through a second capacitor, and an output terminal. A first switch has one end connected to the first input terminal and is turned on in a sample phase to set a voltage of the first input terminal as a voltage of the output terminal. A second switch has one end connected to the second input terminal and is turned on in the sample phase to set a voltage of the second input terminal as a reference voltage. A third switch is turned on in a comparison phase to equalize voltages of the other end of the first switch and the other end of the second switch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.