Title
A Novel Low Power Hybrid Loop Filter For Continuous-Time Sigma-Delta Modulators
Abstract
A novel low power hybrid (Active-Passive) loop filter using the single amplifier biquad (SAB) filter is presented. This new hybrid loop filter saves power consumption by reducing the number of active elements in the continuous-time sigma-delta modulator. Also, the core biquad filter allows the loop filter of a high-order modulator to be implemented by cascading low-order biquad sections, considerably easing the design and implementation of the high-order continuous-time sigma-delta modulator. The proposed loop filter is a general type of hybrid filter which could be used for the both high and low oversampling ratios (OSRs). Experiment on a 5th-order low pass continuous-time sigma-delta modulator with a bandwidth of 30MHz is conducted successfully and the results are presented.
Year
DOI
Venue
2009
10.1109/ISCAS.2009.5118462
ISCAS: 2009 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOLS 1-5
Keywords
Field
DocType
hybrid filter, biquad filter, continuous-time, sigma-delta modulator, Oversampling ratio
Digital biquad filter,Active filter,Control theory,Computer science,High-pass filter,Electronic engineering,Low-pass filter,All-pass filter,Voltage-controlled filter,Filter design,Butterworth filter
Conference
Citations 
PageRank 
References 
1
0.59
3
Authors
2
Name
Order
Citations
PageRank
Ramin Zanbaghi1195.18
Terri S. Fiez216747.25