By Topic

A micropower-compatible time-multiplexed SC speech spectrum analyzer design

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

2 Author(s)
J. S. Chang ; Dept. of Otolaryngol., Melbourne Univ., Vic., Australia ; Y. C. Tong

A micropower-compatible time-multiplexed switched-capacitor (SC) speech spectrum analyzer embodying several new design methodologies is described. In the bandpass filter (BPF) section, the DC offset differences between channels are reduced by a careful biquadratic filter design, and a capacitor sharing technique is employed to reduce chip area. A new time-multiplexed full-wave rectifier (FWR) is also proposed. Expressions for the errors that limit the accuracy of the running spectrum due to nonidealities are formulated. An experimental four-channel spectrum analyzer was fabricated and measurements from prototypes showed that the proposed design methodologies are satisfactory in achieving the design specifications

Published in:

IEEE Journal of Solid-State Circuits  (Volume:28 ,  Issue: 1 )