Analog-to-digital converter
US4568910A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 1982 |
| Grant date | Feb 4, 1986 |
| Priority date | — |
| Expiry date | Dec 17, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/361
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An analog-to-digital converter for converting an analog input signal to a digital output signal with m upper bits and n lower bits includes 2.sup.m+n -1 resistors establishing 2.sup.m+n reference voltages for comparison with an amplitude of the analog input signal, 2.sup.m -1 voltage comparing circuits for comparing the analog input signal with 2.sup.n step-by-step reference voltages, a first encoder for encoding the output signals of the 2.sup.m-1 voltage comparing circuits for generating m upper bits of the digital output signal, a matrix circuit having 2.sup.m (2.sup.n -1) voltage comparators for comparing the analog input signal with the remaining reference voltages of the 2.sup.m+n references voltages, the other voltage comparing circuits being supplied output signals of the matrix circuit and a second encoder for encoding output signals of the other voltage comparing circuits for generating n lower bits of the digital output signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.