IEICE TRANSACTIONS on Electronics
A Design Method of a Cell-Based Amplifier for Body Bias Generation
Summary :
Body bias generators are useful circuits that can reduce variability and power dissipation in LSI circuits. However, the amplifier implemented into the body bias generator is difficult to design because of its complexity. To overcome the difficulty, this paper proposes a clearer cell-based design method of the amplifier than the existing cell-based design methods. The proposed method is based on a simple analytical model, which enables to easily design the amplifiers under various operating conditions. First, we introduce a small signal equivalent circuit of two-stage amplifiers by which we approximate a three-stage amplifier, and introduce a method for determining its design parameters based on the analytical model. Second, we propose a method of tuning parameters such as cell-based phase compensation elements and drive-strength of the output stage. Finally, based on the test chip measurement, we show the advantage of the body bias generator we designed in a cell-based flow over existing designs.
- Publication
- IEICE TRANSACTIONS on Electronics Vol.E102-C No.7 pp.565-572
- Publication Date
- 2019/07/01
- Publicized
- Online ISSN
- 1745-1353
- DOI
- 10.1587/transele.2018CTP0014
- Type of Manuscript
- Special Section PAPER (Special Section on Analog Circuits and Their Application Technologies)
- Category
Authors
Takuya KOYANAGI
Kyoto University
Jun SHIOMI
Kyoto University
Tohru ISHIHARA
Kyoto University
Hidetoshi ONODERA
Kyoto University
Keyword
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Takuya KOYANAGI, Jun SHIOMI, Tohru ISHIHARA, Hidetoshi ONODERA, "A Design Method of a Cell-Based Amplifier for Body Bias Generation" in IEICE TRANSACTIONS on Electronics,
vol. E102-C, no. 7, pp. 565-572, July 2019, doi: 10.1587/transele.2018CTP0014.
Abstract: Body bias generators are useful circuits that can reduce variability and power dissipation in LSI circuits. However, the amplifier implemented into the body bias generator is difficult to design because of its complexity. To overcome the difficulty, this paper proposes a clearer cell-based design method of the amplifier than the existing cell-based design methods. The proposed method is based on a simple analytical model, which enables to easily design the amplifiers under various operating conditions. First, we introduce a small signal equivalent circuit of two-stage amplifiers by which we approximate a three-stage amplifier, and introduce a method for determining its design parameters based on the analytical model. Second, we propose a method of tuning parameters such as cell-based phase compensation elements and drive-strength of the output stage. Finally, based on the test chip measurement, we show the advantage of the body bias generator we designed in a cell-based flow over existing designs.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/transele.2018CTP0014/_p
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@ARTICLE{e102-c_7_565,
author={Takuya KOYANAGI, Jun SHIOMI, Tohru ISHIHARA, Hidetoshi ONODERA, },
journal={IEICE TRANSACTIONS on Electronics},
title={A Design Method of a Cell-Based Amplifier for Body Bias Generation},
year={2019},
volume={E102-C},
number={7},
pages={565-572},
abstract={Body bias generators are useful circuits that can reduce variability and power dissipation in LSI circuits. However, the amplifier implemented into the body bias generator is difficult to design because of its complexity. To overcome the difficulty, this paper proposes a clearer cell-based design method of the amplifier than the existing cell-based design methods. The proposed method is based on a simple analytical model, which enables to easily design the amplifiers under various operating conditions. First, we introduce a small signal equivalent circuit of two-stage amplifiers by which we approximate a three-stage amplifier, and introduce a method for determining its design parameters based on the analytical model. Second, we propose a method of tuning parameters such as cell-based phase compensation elements and drive-strength of the output stage. Finally, based on the test chip measurement, we show the advantage of the body bias generator we designed in a cell-based flow over existing designs.},
keywords={},
doi={10.1587/transele.2018CTP0014},
ISSN={1745-1353},
month={July},}
Copy
TY - JOUR
TI - A Design Method of a Cell-Based Amplifier for Body Bias Generation
T2 - IEICE TRANSACTIONS on Electronics
SP - 565
EP - 572
AU - Takuya KOYANAGI
AU - Jun SHIOMI
AU - Tohru ISHIHARA
AU - Hidetoshi ONODERA
PY - 2019
DO - 10.1587/transele.2018CTP0014
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E102-C
IS - 7
JA - IEICE TRANSACTIONS on Electronics
Y1 - July 2019
AB - Body bias generators are useful circuits that can reduce variability and power dissipation in LSI circuits. However, the amplifier implemented into the body bias generator is difficult to design because of its complexity. To overcome the difficulty, this paper proposes a clearer cell-based design method of the amplifier than the existing cell-based design methods. The proposed method is based on a simple analytical model, which enables to easily design the amplifiers under various operating conditions. First, we introduce a small signal equivalent circuit of two-stage amplifiers by which we approximate a three-stage amplifier, and introduce a method for determining its design parameters based on the analytical model. Second, we propose a method of tuning parameters such as cell-based phase compensation elements and drive-strength of the output stage. Finally, based on the test chip measurement, we show the advantage of the body bias generator we designed in a cell-based flow over existing designs.
ER -
English
