Patent · US Active

Sigma delta modulator and related method thereof

US7696914B2 · kind B2 · utility

1Cited by

4References

8Claims

0Family size

Assignee

MSTAR SEMICONDUCTOR, INC. · TW

Inventors

Hung-Chuan Pai · San Diego, US
Chao-Tung Yang · New Taipei, TW

Key dates

Filing date	Jul 24, 2008
Grant date	Apr 13, 2010
Priority date	—
Expiry date	Jul 24, 2028

Classification

Technology area (CPC H)Electricity
CPC primaryH03M3/49
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

A sigma-delta modulator includes a loop filter, a single bit quantizer, a single bit DAC, an adder. The loop filter is for filtering a summed signal to generate a filtered signal. The single bit quantizer is coupled to the loop filter, for performing a quantization process to the filtered signal to generate a quantized signal. The single bit DAC is coupled to the single bit quantizer, has an adjustable configuration, and is for generating a feedback signal according to the quantized signal and the configuration thereof. The adder is coupled to the loop filter and the single bit DAC, for summing an input signal and the feedback signal to generate the summed signal.

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