Digital to analog converter having high multiplying bandwidth
US5283579A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 6, 1992 |
| Grant date | Feb 1, 1994 |
| Priority date | — |
| Expiry date | Mar 6, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/808
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A digital to analog converter (DAC) incorporates a novel subranging voltage output DAC that delivers high multiplying bandwidth while consuming low power and requires small silicon area. The higher order digital input bits (MSBS) select a voltage range (VMSB) from a first resistor divider DAC network. The VMSB is then applied to the input of a small high speed low power differential input single ended output LSB programmable attenuator amplifier. Transistor follower devices effectively buffer the MSB section to the LSB section and increase bandwidth and speed of operation as well as permitting multichannel sharing of a single precision MSB voltage divider network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.