Self-calibrating high speed D/A converter
US5646619A · kind A · utility
23Cited by
3References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 26, 1995 |
| Grant date | Jul 8, 1997 |
| Priority date | — |
| Expiry date | Apr 26, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/747
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A self-calibrating high speed D/A converter is provided with a calibration circuit for providing a fixed calibration current and a fixed calibration voltage during calibration mode, and a biasing circuit for biasing the calibration circuit with a first reference voltage and biasing the MSB and LSB array cells with a second reference voltage. By keeping the biasing voltage constant at the array cells during both calibrating and operating modes, such as 12 bits, the D/A converter effectively operates at high resolution, and at high operating speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.