By Topic

An All-Digital Large- N Audio Frequency Synthesizer for HDMI Applications

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

6 Author(s)
Ching-Che Chung ; Department of Computer Science and Information Engineering, National Chung Cheng University , Chiayi, Taiwan ; Duo Sheng ; Chia-Lin Chang ; Wei-Da Ho
more authors

In this brief, a novel all-digital and large-frequency-multiplication-ratio audio frequency synthesizer for high-definition multimedia interface applications is presented. The proposed large- N frequency synthesizer is designed in an all-digital manner to reduce circuit complexity and design efforts in advanced CMOS process technology, as compared with prior studies. The proposed frequency synthesizer does not require an extra high-frequency reference clock source but employs a single locking loop to reduce lock-in time and enhance loop stability. Based on the proposed frequency search algorithm and the high-resolution digitally controlled oscillator, the frequency synthesizer cannot only provide a large frequency multiplication ratio, but it also achieves low-jitter performance. Measurement results show that the frequency multiplication ratio has a range of 4096 to 25 088 and that the power consumption of the proposed frequency synthesizer can be improved to 591 μW (at 24.576 MHz) with a peak-to-peak jitter of 1.23%. In addition, the proposed frequency synthesizer can be implemented with standard cells, making it easily portable to different processes and very suitable for system-on-a-chip applications.

Published in:

IEEE Transactions on Circuits and Systems II: Express Briefs  (Volume:59 ,  Issue: 7 )