J. Low Power Electron. Appl. 2012, 2(3), 197-209; doi:10.3390/jlpea2030197
Article

A Low-Power Single-Bit Continuous-Time ΔΣ Converter with 92.5 dB Dynamic Range for Biomedical Applications

Received: 5 April 2012; in revised form: 6 July 2012 / Accepted: 9 July 2012 / Published: 26 July 2012
(This article belongs to the Special Issue Selected Papers from SubVt 2011 Conference)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: A third-order single-bit CT-ΔΣ modulator for generic biomedical applications is implemented in a 0.15 µm FDSOI CMOS process. The overall power efficiency is attained by employing a single-bit ΔΣ and a subthreshold FDSOI process. The loop-filter coefficients are determined using a systematic design centering approach by accounting for the integrator non-idealities. The single-bit CT-ΔΣ modulator consumes 110 µW power from a 1.5 V power supply when clocked at 6.144 MHz. The simulation results for the modulator exhibit a dynamic range of 94.4 dB and peak SNDR of 92.4 dB for 6 kHz signal bandwidth. The figure of merit (FoM) for the third-order, single-bit CT-ΔΣ modulator is 0.271 pJ/level.
Keywords: analog-to-digital converter (ADC); continuous-time delta-sigma; data converter; oversampling; delta-sigma modulation; low-pass filter; low-power design; low-voltage design
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MDPI and ACS Style

Balagopal, S.; Saxena, V. A Low-Power Single-Bit Continuous-Time ΔΣ Converter with 92.5 dB Dynamic Range for Biomedical Applications. J. Low Power Electron. Appl. 2012, 2, 197-209.

AMA Style

Balagopal S, Saxena V. A Low-Power Single-Bit Continuous-Time ΔΣ Converter with 92.5 dB Dynamic Range for Biomedical Applications. Journal of Low Power Electronics and Applications. 2012; 2(3):197-209.

Chicago/Turabian Style

Balagopal, Sakkarapani; Saxena, Vishal. 2012. "A Low-Power Single-Bit Continuous-Time ΔΣ Converter with 92.5 dB Dynamic Range for Biomedical Applications." J. Low Power Electron. Appl. 2, no. 3: 197-209.

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