A 900 mV 66μW Sigma-Delta Modulator Dedicated to Implantable Sensors(Biomedical Circuits and Systems, <Special Section>Recent Advances in Circuits and Systems-Part1)

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概要

• 論文の詳細を見る

• In this paper, a low-voltage low-power sigma-delta modulator dedicated to implantable sensing devices is presented. This second-order single-loop sigma-delta modulator is implemented with half-delay integrators. These integrators are based on new fully-differential CMOS class AB switched-Operational Transconductance Amplifier (switched-OTA). An on-chip voltage doubler is introduced to locally boost a supply voltage at the input stage of a conventional OTA in order to allow rail-to-rail signal swing. Experimental results of the modulator fabricated in CMOS 0.18pm technology confirm its expected features of a peak signal-to-noise ratio (SNR) of 72 dB, a signal-to-noise distortion ratio (SNDR) of 62 dB in a 5kHz signal bandwidth, and a power consumption lower than 66μW with a 900 mV voltage supply.

• 社団法人電子情報通信学会の論文
• 2005-07-01

著者

• Sawan Mohamad

  Ecole Polytechnique De Montreal

• LU Zhijun

  Ecole Polytechnique de Montreal

• HU Yamu

  Ecole Polytechnique de Montreal

関連論文

• A 900 mV 66μW Sigma-Delta Modulator Dedicated to Implantable Sensors(Biomedical Circuits and Systems, Recent Advances in Circuits and Systems-Part1)

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