Patent · US Active

Power-saving current-mode digital-to-analog converter (DAC)

US10680640B2 · kind B2 · utility

2Cited by

3References

30Claims

0Family size

Assignee

CIRRUS LOGIC, INC. · US

Inventors

Cory J. Peterson · Austin, US
Anand Ilango · Austin, US

Key dates

Filing date	Dec 21, 2016
Grant date	Jun 9, 2020
Priority date	—
Expiry date	Jan 28, 2038

Classification

Technology area (CPC H)Electricity
CPC primaryH03M1/742
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

A digital-to-analog converter (DAC) for an audio system in a media device, such as a portable media device or smart phone, may be operated to turn off portions of the DAC to reduce power consumption. Segments of a segment-able DAC may be powered off when the output level of the DAC is lower than the full scale output of the DAC. For example, DAC elements within a finite impulse response (FIR) DAC may be turned off when a desired output level can be obtained with less than all DAC elements of the FIR DAC.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.