Current digital-to-analog converter with high-impedance output
US11271583B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2020 |
| Grant date | Mar 8, 2022 |
| Priority date | — |
| Expiry date | Jul 31, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/11
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A differential output current digital-to-analog converter (IDAC) circuit may include a delta-sigma modulator configured to receive a digital input signal, a control circuit responsive to the delta-sigma modulator configured to perform a DAC decode operation, a plurality of DAC elements responsive to the DAC decode operation, the plurality of DAC elements configured to, in concert, generate a differential output current signal based on the digital input signal to a load coupled to a pair of output terminals of the IDAC, and an output impedance coupled between the pair of output terminals such that the output impedance is in parallel with the load.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.