An ultra low-power delta-sigma modulator using charge-transfer amplifier technique

Chien Hung Kuo, Kuan Yi Lee, Ming Feng Wu

研究成果: 書貢獻/報告類型會議論文篇章

摘要

In this paper, an ultra low-power delta-sigma (ΔΣ) modulator applying charge-transfer amplifier (CTA) technique for voice-band applications is presented. Both the fully-differential charge-transfer amplifier and integrator are developed for higher dynamic range of the modulator. A 67 dB of the peak SNR within a 4 kHz of bandwidth is reached in the presented modulator under a 2.5 MHz of sampling rate. The prototype circuit has been implemented in a 0.18 μm 1P6M CMOS technology. The chip area excluding PADs is 0.50 × 0.28 mm2. Due to its zero static current of CTA, only dynamic power is consumed in the circuit. The power consumption of the analog part of the presented second-order ΔΣ modulator is only 3.4 μW. The total power consumption of the whole modulator is 36 μW at a 1.8 V of supply voltage.

原文英語
主出版物標題Proceedings of APCCAS 2008 - 2008 IEEE Asia Pacific Conference on Circuits and Systems
頁面1236-1239
頁數4
DOIs
出版狀態已發佈 - 2008
事件APCCAS 2008 - 2008 IEEE Asia Pacific Conference on Circuits and Systems - Macao, 中国
持續時間: 2008 十一月 302008 十二月 3

出版系列

名字IEEE Asia-Pacific Conference on Circuits and Systems, Proceedings, APCCAS

其他

其他APCCAS 2008 - 2008 IEEE Asia Pacific Conference on Circuits and Systems
國家中国
城市Macao
期間2008/11/302008/12/03

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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