Non-binary Pipeline Analog-to-Digital Converter Based on β-Expansion

Hao SAN; Tomonari KATO; Tsubasa MARUYAMA; Kazuyuki AIHARA; Masao HOTTA

doi:10.1587/transfun.E96.A.415

Non-binary Pipeline Analog-to-Digital Converter Based on β-Expansion

Hao SAN, Tomonari KATO, Tsubasa MARUYAMA, Kazuyuki AIHARA, Masao HOTTA

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This paper proposes a pipeline analog-to-digital converter (ADC) with non-binary encoding technique based on β-expansion. By using multiply-by-β switched-capacitor (SC) multiplying digital-to-analog converter (MDAC) circuit, our proposed ADC is composed by radix-β (1 < β < 2) 1 bit pipeline stages instead of using the conventional radix-2 1.5 bit/1 bit pipeline stages to realize non-binary analog-to-digital conversion. Also with proposed β-value estimation algorithm, there is not any digital calibration technique is required in proposed pipeline ADC. The redundancy of non-binary ADC tolerates not only the non-ideality of comparator, but also the mismatch of capacitances and the gain error of operational amplifier (op-amp) in MDAC. As a result, the power hungry high gain and wide bandwidth op-amps are not necessary for high resolution ADC, so that the reliability-enhanced pipeline ADC with simple amplifiers can operate faster and with lower power. We analyse the β-expansion of AD conversion and modify the β-encoding technique for pipeline ADC. In our knowledge, this is the first proposal architecture for non-binary pipeline ADC. The reliability of the proposed ADC architecture and β-encoding technique are verified by MATLAB simulations.

Publication: IEICE TRANSACTIONS on Fundamentals Vol.E96-A No.2 pp.415-421

Publication Date: 2013/02/01

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Online ISSN: 1745-1337

DOI: 10.1587/transfun.E96.A.415

Type of Manuscript: Special Section PAPER (Special Section on Analog Circuit Techniques and Related Topics)

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Hao SAN, Tomonari KATO, Tsubasa MARUYAMA, Kazuyuki AIHARA, Masao HOTTA, "Non-binary Pipeline Analog-to-Digital Converter Based on β-Expansion" in IEICE TRANSACTIONS on Fundamentals, vol. E96-A, no. 2, pp. 415-421, February 2013, doi: 10.1587/transfun.E96.A.415.
Abstract: This paper proposes a pipeline analog-to-digital converter (ADC) with non-binary encoding technique based on β-expansion. By using multiply-by-β switched-capacitor (SC) multiplying digital-to-analog converter (MDAC) circuit, our proposed ADC is composed by radix-β (1 < β < 2) 1 bit pipeline stages instead of using the conventional radix-2 1.5 bit/1 bit pipeline stages to realize non-binary analog-to-digital conversion. Also with proposed β-value estimation algorithm, there is not any digital calibration technique is required in proposed pipeline ADC. The redundancy of non-binary ADC tolerates not only the non-ideality of comparator, but also the mismatch of capacitances and the gain error of operational amplifier (op-amp) in MDAC. As a result, the power hungry high gain and wide bandwidth op-amps are not necessary for high resolution ADC, so that the reliability-enhanced pipeline ADC with simple amplifiers can operate faster and with lower power. We analyse the β-expansion of AD conversion and modify the β-encoding technique for pipeline ADC. In our knowledge, this is the first proposal architecture for non-binary pipeline ADC. The reliability of the proposed ADC architecture and β-encoding technique are verified by MATLAB simulations.
URL: https://globals.ieice.org/en_transactions/fundamentals/10.1587/transfun.E96.A.415/_p

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@ARTICLE{e96-a_2_415,
author={Hao SAN, Tomonari KATO, Tsubasa MARUYAMA, Kazuyuki AIHARA, Masao HOTTA, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Non-binary Pipeline Analog-to-Digital Converter Based on β-Expansion},
year={2013},
volume={E96-A},
number={2},
pages={415-421},
abstract={This paper proposes a pipeline analog-to-digital converter (ADC) with non-binary encoding technique based on β-expansion. By using multiply-by-β switched-capacitor (SC) multiplying digital-to-analog converter (MDAC) circuit, our proposed ADC is composed by radix-β (1 < β < 2) 1 bit pipeline stages instead of using the conventional radix-2 1.5 bit/1 bit pipeline stages to realize non-binary analog-to-digital conversion. Also with proposed β-value estimation algorithm, there is not any digital calibration technique is required in proposed pipeline ADC. The redundancy of non-binary ADC tolerates not only the non-ideality of comparator, but also the mismatch of capacitances and the gain error of operational amplifier (op-amp) in MDAC. As a result, the power hungry high gain and wide bandwidth op-amps are not necessary for high resolution ADC, so that the reliability-enhanced pipeline ADC with simple amplifiers can operate faster and with lower power. We analyse the β-expansion of AD conversion and modify the β-encoding technique for pipeline ADC. In our knowledge, this is the first proposal architecture for non-binary pipeline ADC. The reliability of the proposed ADC architecture and β-encoding technique are verified by MATLAB simulations.},
keywords={},
doi={10.1587/transfun.E96.A.415},
ISSN={1745-1337},
month={February},}

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TY - JOUR
TI - Non-binary Pipeline Analog-to-Digital Converter Based on β-Expansion
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 415
EP - 421
AU - Hao SAN
AU - Tomonari KATO
AU - Tsubasa MARUYAMA
AU - Kazuyuki AIHARA
AU - Masao HOTTA
PY - 2013
DO - 10.1587/transfun.E96.A.415
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E96-A
IS - 2
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - February 2013
AB - This paper proposes a pipeline analog-to-digital converter (ADC) with non-binary encoding technique based on β-expansion. By using multiply-by-β switched-capacitor (SC) multiplying digital-to-analog converter (MDAC) circuit, our proposed ADC is composed by radix-β (1 < β < 2) 1 bit pipeline stages instead of using the conventional radix-2 1.5 bit/1 bit pipeline stages to realize non-binary analog-to-digital conversion. Also with proposed β-value estimation algorithm, there is not any digital calibration technique is required in proposed pipeline ADC. The redundancy of non-binary ADC tolerates not only the non-ideality of comparator, but also the mismatch of capacitances and the gain error of operational amplifier (op-amp) in MDAC. As a result, the power hungry high gain and wide bandwidth op-amps are not necessary for high resolution ADC, so that the reliability-enhanced pipeline ADC with simple amplifiers can operate faster and with lower power. We analyse the β-expansion of AD conversion and modify the β-encoding technique for pipeline ADC. In our knowledge, this is the first proposal architecture for non-binary pipeline ADC. The reliability of the proposed ADC architecture and β-encoding technique are verified by MATLAB simulations.
ER -