A continuous-time ΔΣ modulator with a digital technique for excess loop delay compensation

Yi Zhang, Chia-Hung Chen, Tao He, Xin Meng, Gabor C. Temes

研究成果: Conference contribution同行評審

4 引文 斯高帕斯(Scopus)

摘要

A 3rd-order continuous-time ΔΣ modulator with a highly-digital technique for excess loop delay (ELD) compensation is reported. A digitally controlled reference switching matrix is used to replace the commonly used power-hungry signal adder and extra DAC driving the quantizer. The feedback DAC is embedded in the quantizer, and implemented by a few switches. The proposed technique helps the modulator tolerate excess loop delay up to half a clock period. The modulator achieves an SQNR of 83.3 dB in a 15 MHz signal bandwidth. The use of a 2-bit FIR feedback DAC lowers the jitter-induced noise by about 10 dB. The simulated power consumption of the modulator is 7 mW.

原文English
主出版物標題2014 IEEE International Symposium on Circuits and Systems, ISCAS 2014
發行者Institute of Electrical and Electronics Engineers Inc.
頁面934-937
頁數4
ISBN(列印)9781479934324
DOIs
出版狀態Published - 1 1月 2014
事件2014 IEEE International Symposium on Circuits and Systems, ISCAS 2014 - Melbourne, VIC, Australia
持續時間: 1 6月 20145 6月 2014

出版系列

名字Proceedings - IEEE International Symposium on Circuits and Systems
ISSN(列印)0271-4310

Conference

Conference2014 IEEE International Symposium on Circuits and Systems, ISCAS 2014
國家/地區Australia
城市Melbourne, VIC
期間1/06/145/06/14

指紋

深入研究「A continuous-time ΔΣ modulator with a digital technique for excess loop delay compensation」主題。共同形成了獨特的指紋。

引用此