Comparator circuit for analog-to-digital converter
US6404374B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 13, 2000 |
| Grant date | Jun 11, 2002 |
| Priority date | — |
| Expiry date | Oct 13, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/36
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A comparator circuit used in an analog-to-digital converter includes an input voltage signal line; a reference voltage signal line; a plurality of comparators connected to said input voltage signal line and said reference voltage signal line; a plurality of amplifiers corresponding separately to each of said plurality of comparators and connected respectively between said input voltage signal lines, said reference voltage signal lines, and their corresponding comparators; and a thermocode channel connected to outputs of said plurality of comparators. A plurality of resistors with resistances in a constant ratio are provided in said reference voltage signal line and each is connected between the inputs of two adjacent amplifiers. A plurality of averaging capacitors are provided and each is connected between the outputs of two adjacent comparators; wherein said plurality of averaging capacitors may have the same capacitance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.