Patent · US Active

Delta-sigma modulator with reduced integrator requirements

US9379732B2 · kind B2 · utility

0Cited by

6References

18Claims

0Family size

Assignee

CIRRUS LOGIC, INC. · US

Inventors

John L. Melanson · Austin, US
Stephen T. Hodapp · Austin, US

Key dates

Filing date	Sep 4, 2015
Grant date	Jun 28, 2016
Priority date	—
Expiry date	Sep 4, 2035

Classification

Technology area (CPC H)Electricity
CPC primaryH03M3/464
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

Requirements placed on the first integrator of a filter in a continuous-time delta-feedback modulator may be reduced by using circuitry to reduce the speed of a signal provided to the first integrator of the modulator. The reduction in speed applied to the signal received at the first integrator may then be compensated with circuitry elsewhere in the modulator, such that the net effect of the slow down and speed up of signals does not affect the output of the modulator. The sigma-delta modulator may be implemented in converters, such as an analog-to-digital converter (ADC).

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