Digital to analog converter
US11979169B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 14, 2022 |
| Grant date | May 7, 2024 |
| Priority date | — |
| Expiry date | Dec 6, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/785
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A digital to analog converter (DAC) includes an amplifier including a buffer of the DAC, and a resistor ladder arrangement coupled to a non-inverting input terminal of the amplifier to generate a voltage based on a digital control word. The arrangement includes a first, least-significant bit, segment arranged in one of an R-2R or unit-R configuration, a second, most-significant bit, segment including one or more units each including a second-segment-resistor having a resistor terminal coupled to a respective second switch and having a second resistance, RMSB, and a third segment including one or more third-segment-resistors coupled in parallel to the non-inverting input terminal and connected to a first reference voltage terminal. M2 designates a number of bits in the digital control word for controlling the second switches, and the third segment has a total resistance, Rsp, based on M2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.