Delta-sigma modulator having predictive-controlled power...

Details Delta-sigma modulator having predictive-controlled power... Delta-sigma modulator having predictive-controlled power...

2007-11-20

2007-11-20

Mai, Lam T. (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Differential encoder and/or decoder

C341S144000

Reexamination Certificate

active

11465468

ABSTRACT:
A delta-sigma modulator having predictive-controlled power consumption provides for reduced power consumption in analog-to-digital converters. The initial integrator stage of the delta-sigma modulator has a bias control input, which controls the level of power consumed by the integrator. The bias control input is coupled to a predictor circuit that predicts the level of change at the output of the integrator for the sample cycle. The predictor circuit may use changes in the output of the modulator quantizer alone or in combination with measured changes in the input signal in order to predict the level of change in the integrator output. The quantizer output may be differentiated to remove low frequency components and thereby provide the predictive input from the quantizer. Alternatively, steps in the quantizer output computed by differences may be used directly.

REFERENCES:
patent: 5923273 (1999-07-01), Pastorello
patent: 6249236 (2001-06-01), Lee et al.
patent: 6369745 (2002-04-01), Lee et al.
patent: 6552676 (2003-04-01), Bjorksten et al.
patent: 6653886 (2003-11-01), Lee et al.
patent: 6670902 (2003-12-01), Melanson et al.
patent: 6809672 (2004-10-01), Gupta
patent: 6975258 (2005-12-01), Pedersen
patent: 7142144 (2006-11-01), Farooqi et al.
patent: 7190296 (2007-03-01), Gupta
Kasha, et al., “A 16-mW, 120-dB Linear Switched-Capacitor Delta-Sigma Modulator with Dynamic Biasing”, IEEE Journal of Solid-State Circuits, vol. 34, No. 7, Jul. 1999, IEEE Press.

Affiliated with

Also associated with

Rating

Delta-sigma modulator having predictive-controlled power... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Delta-sigma modulator having predictive-controlled power..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Delta-sigma modulator having predictive-controlled power... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3860484