Fully Passive Noise Shaping Techniques in a Charge-Redistribution SAR ADC

Zhijie CHEN; Masaya MIYAHARA; Akira MATSUZAWA

doi:10.1587/transele.E99.C.623

Fully Passive Noise Shaping Techniques in a Charge-Redistribution SAR ADC

Zhijie CHEN, Masaya MIYAHARA, Akira MATSUZAWA

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This paper analyzes three passive noise shaping techniques in a SAR ADC. These passive noise shaping techniques can realize 1^st and 2^nd order noise shaping. These proposed opamp-less noise shaping techniques are realized by charge-redistribution. This means that the proposals maintain the basic architecture and operation principle of a charge-redistribution SAR ADC. Since the proposed techniques work in a passive mode, the proposals have high power efficiency. Meanwhile, the proposed noise shaping SAR ADCs are robust to feature size scaling and power supply reduction. Flicker noise is not introduced into the ADC by passive noise shaping techniques. Therefore, no additional calibration techniques for flicker noise are required. The noise shaping effects of the 1^st and 2^nd order noise shaping are verified by behavioral simulation results. The relationship between resolution improvement and oversampling rate is also explored in this paper.

Publication: IEICE TRANSACTIONS on Electronics Vol.E99-C No.6 pp.623-631

Publication Date: 2016/06/01

Publicized

Online ISSN: 1745-1353

DOI: 10.1587/transele.E99.C.623

Type of Manuscript: Special Section PAPER (Special Section on Analog Circuits and Related SoC Integration Technologies)

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Authors

Zhijie CHEN
  Tokyo Institute of Technology
Masaya MIYAHARA
  Tokyo Institute of Technology
Akira MATSUZAWA
  Tokyo Institute of Technology

Keyword

fully passive, SAR ADC, 1st order noise shaping, 2nd order noise shaping, charge-redistribution, noise transfer function

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Zhijie CHEN, Masaya MIYAHARA, Akira MATSUZAWA, "Fully Passive Noise Shaping Techniques in a Charge-Redistribution SAR ADC" in IEICE TRANSACTIONS on Electronics, vol. E99-C, no. 6, pp. 623-631, June 2016, doi: 10.1587/transele.E99.C.623.
Abstract: This paper analyzes three passive noise shaping techniques in a SAR ADC. These passive noise shaping techniques can realize 1^st and 2^nd order noise shaping. These proposed opamp-less noise shaping techniques are realized by charge-redistribution. This means that the proposals maintain the basic architecture and operation principle of a charge-redistribution SAR ADC. Since the proposed techniques work in a passive mode, the proposals have high power efficiency. Meanwhile, the proposed noise shaping SAR ADCs are robust to feature size scaling and power supply reduction. Flicker noise is not introduced into the ADC by passive noise shaping techniques. Therefore, no additional calibration techniques for flicker noise are required. The noise shaping effects of the 1^st and 2^nd order noise shaping are verified by behavioral simulation results. The relationship between resolution improvement and oversampling rate is also explored in this paper.
URL: https://globals.ieice.org/en_transactions/electronics/10.1587/transele.E99.C.623/_p

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@ARTICLE{e99-c_6_623,
author={Zhijie CHEN, Masaya MIYAHARA, Akira MATSUZAWA, },
journal={IEICE TRANSACTIONS on Electronics},
title={Fully Passive Noise Shaping Techniques in a Charge-Redistribution SAR ADC},
year={2016},
volume={E99-C},
number={6},
pages={623-631},
abstract={This paper analyzes three passive noise shaping techniques in a SAR ADC. These passive noise shaping techniques can realize 1^st and 2^nd order noise shaping. These proposed opamp-less noise shaping techniques are realized by charge-redistribution. This means that the proposals maintain the basic architecture and operation principle of a charge-redistribution SAR ADC. Since the proposed techniques work in a passive mode, the proposals have high power efficiency. Meanwhile, the proposed noise shaping SAR ADCs are robust to feature size scaling and power supply reduction. Flicker noise is not introduced into the ADC by passive noise shaping techniques. Therefore, no additional calibration techniques for flicker noise are required. The noise shaping effects of the 1^st and 2^nd order noise shaping are verified by behavioral simulation results. The relationship between resolution improvement and oversampling rate is also explored in this paper.},
keywords={},
doi={10.1587/transele.E99.C.623},
ISSN={1745-1353},
month={June},}

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TY - JOUR
TI - Fully Passive Noise Shaping Techniques in a Charge-Redistribution SAR ADC
T2 - IEICE TRANSACTIONS on Electronics
SP - 623
EP - 631
AU - Zhijie CHEN
AU - Masaya MIYAHARA
AU - Akira MATSUZAWA
PY - 2016
DO - 10.1587/transele.E99.C.623
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E99-C
IS - 6
JA - IEICE TRANSACTIONS on Electronics
Y1 - June 2016
AB - This paper analyzes three passive noise shaping techniques in a SAR ADC. These passive noise shaping techniques can realize 1^st and 2^nd order noise shaping. These proposed opamp-less noise shaping techniques are realized by charge-redistribution. This means that the proposals maintain the basic architecture and operation principle of a charge-redistribution SAR ADC. Since the proposed techniques work in a passive mode, the proposals have high power efficiency. Meanwhile, the proposed noise shaping SAR ADCs are robust to feature size scaling and power supply reduction. Flicker noise is not introduced into the ADC by passive noise shaping techniques. Therefore, no additional calibration techniques for flicker noise are required. The noise shaping effects of the 1^st and 2^nd order noise shaping are verified by behavioral simulation results. The relationship between resolution improvement and oversampling rate is also explored in this paper.
ER -