A highly linear open-loop full CMOS high-speed sample-and-hold stage

Khayrollah Hadidi; Masahiro Sasaki; Tadatoshi Watanabe; Daigo Muramatsu; Takashi Matsumoto

A highly linear open-loop full CMOS high-speed sample-and-hold stage

Khayrollah Hadidi, Masahiro Sasaki, Tadatoshi Watanabe, Daigo Muramatsu, Takashi Matsumoto

研究成果: Article › 査読

抄録

Based on a cascode-driver source-follower buffer, and a passive sampling architecture, we have implemented a differential sample-and-hold circuit in a 0.8 μm digital CMOS process. The buffer which eliminates channel length modulation of the driver device behaves very linearly, in low frequencies or sampled-data applications. This is the main reason that this first open-loop CMOS sample-and-hold can achieves very high linearity while functions at very high sampling rate. The circuit achieved -61 dB THD for a 1.42 V_p-p 10 MHz input signal at a 103 MHz sampling rate and -55.9 dB THD for a 1.22 V_p-p 20 MHz at a 101 MHz sampling rate.

本文言語	English
ページ（範囲）	261-266
ページ数	6
ジャーナル	IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
巻	E82-A
号	2
出版ステータス	Published - 2000 1 1
外部発表	はい

ASJC Scopus subject areas

信号処理
コンピュータグラフィックスおよびコンピュータ支援設計
電子工学および電気工学
応用数学

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AU - Hadidi, Khayrollah

AU - Sasaki, Masahiro

AU - Watanabe, Tadatoshi

AU - Muramatsu, Daigo

AU - Matsumoto, Takashi

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AB - Based on a cascode-driver source-follower buffer, and a passive sampling architecture, we have implemented a differential sample-and-hold circuit in a 0.8 μm digital CMOS process. The buffer which eliminates channel length modulation of the driver device behaves very linearly, in low frequencies or sampled-data applications. This is the main reason that this first open-loop CMOS sample-and-hold can achieves very high linearity while functions at very high sampling rate. The circuit achieved -61 dB THD for a 1.42 Vp-p 10 MHz input signal at a 103 MHz sampling rate and -55.9 dB THD for a 1.22 Vp-p 20 MHz at a 101 MHz sampling rate.

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A highly linear open-loop full CMOS high-speed sample-and-hold stage

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