Current digital-to-analog converter with warming of digital-to-analog converter elements
US11043959B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 2020 |
| Grant date | Jun 22, 2021 |
| Priority date | — |
| Expiry date | Jul 29, 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 (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 a plurality of warming switches, each warming switch coupled to a respective bias transistor of a respective DAC element of the plurality of DAC elements, wherein the control circuit may further be configured to selectively control each such warming switch in order to selectively de-bias and bias a respective bias transistor of such warming switch when a respective DAC element of the respective bias transistor is output-disabled from generating the differential output current signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.