Method and circuit for compensation of a multiplying digital-to-analog converter
US4631522A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 12, 1985 |
| Grant date | Dec 23, 1986 |
| Priority date | — |
| Expiry date | Apr 12, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/747
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method and circuit for reducing the effect of variations in resistances within a multiplying digital-to-analog converter. A first resistor is connected at one end to the feedback resistor of the MDAC, the other end providing a compensated circuit input. A second resistor is connected from the MDAC input to the feedback resistor. The MDAC output to which the feedback resistor is internally connected is connected to the MDAC reference connection, the other output providing a compensated circuit output. The first and second resistors are chosen such that the product of their resistances is equal to the product of the feedback resistance times the MDAC input resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.