A 12-bit cyclic ADC with random feedback capacitor interchanging technique

Chun Hsien Kuo, Tso Hung Fan, Tai-Haur Kuo

研究成果: Conference contribution

2 引文 斯高帕斯(Scopus)

摘要

This work implements a 12-bit cyclic ADC with random feedback-capacitor interchanging (RFCI) technique to reduce the harmonic distortion caused by capacitor mismatch. Without sacrificing SNDR, the RFCI technique can improves upon the SFDR of conventional ADCs. The ADC is realized with a reconfigurable architecture to demonstrate the effect of the RFCI technique. The performance comparison between the RFCI and conventional techniques is obtained using the same cyclic ADC. The ADC uses simple clock-timing control circuits to switch arrangements of capacitor connection. This capacitor swapping architecture does not need additional complicated digital calibration circuits. Hence, it is suitable for low-power and low-cost applications. This single chip occupies 0.63-mm2 active area in a 0.35-μm, double-poly, four-metal CMOS process. Measurements show that the SFDR and SNDR obtained using the RFCI technique are 7 dB and 0.5 dB higher than those obtained using the conventional technique, respectively, which indicates the advantages of the RFCI technique.

原文English
主出版物標題2009 International SoC Design Conference, ISOCC 2009
頁面508-511
頁數4
DOIs
出版狀態Published - 2009 十二月 1
事件2009 International SoC Design Conference, ISOCC 2009 - Busan, Korea, Republic of
持續時間: 2009 十一月 222009 十一月 24

出版系列

名字2009 International SoC Design Conference, ISOCC 2009

Other

Other2009 International SoC Design Conference, ISOCC 2009
國家/地區Korea, Republic of
城市Busan
期間09-11-2209-11-24

All Science Journal Classification (ASJC) codes

  • 電氣與電子工程

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