By Topic

Gain-bandwidth product effects on SC filters including a quasi-optimal topology

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

1 Author(s)
Edgar Sánchez-Sinencio ; INAOE, Puebla, Mexico; Dept. of Electrical Engineering, Texas A&M University, College Station, TX 77843-3128

The gain-bandwidth product (GB) effects on switched-capacitor (SC) filters are analyzed and described in detail. A systematic general analysis method is reviewed. To biquad SC filters with the same ideal transfer function are compared. It is shown that when the op amps are modeled with one dominant pole, their frequency responses differ significantly. The importance of switch phasing is emphasized and explained, and GB effects on SC filters are discussed. A quasi-optimal SC biquad topology with respect to GB effects is described. Its performance is illustrated by means of a root-locus plot. This plot allows the designer to determine the ω0 and Q deviations for different values of GB/ω0.

Published in:

IEEE Circuits & Systems Magazine  (Volume:5 ,  Issue: 4 )