A Self-Biased Current-Mode Amplifier with an Application to 10-bit Pipeline ADC
SCIE
SCOPUS
- Title
- A Self-Biased Current-Mode Amplifier with an Application to 10-bit Pipeline ADC
- Authors
- Seungnam Choi; Yunjae Suh; Joohyun Lee; Jinkyu Kim; Byungsub Kim; Hong-June Park; Jae-Yoon Sim
- Date Issued
- 2017-07
- Publisher
- Institute of Electrical and Electronics Engineers Inc.
- Abstract
- This paper presents a self-biased current-mode amplifier (CMAMP) suitable for a switched-capacitor circuit. The CMAMP uses a subthreshold-biased transimpedance stage as a current-sensing load, and minimizes static power dissipation by passing bias current only at the input stage. The first-order system behavior with single dominant pole gives stable phase margin without complicated frequency compensation. Self-biasing circuits automatically generate bias voltages to sustain performance over a wide range of supply voltage. The designed CMAMP is verified in a 10-bit pipeline analog-to-digital converter (ADC) fabricated in a 65-nm CMOS process. The ADC achieves a figure of merit of 14.3 fJ/c-s with a supply voltage of 0.6 V at 2.5 MS/s. ? 2017 IEEE.
- Keywords
- Analog to digital conversion; Pipelines; Figure of merits; First order systems; Frequency compensation; Pipeline analog-to-digital converters; Self-biasing circuits; Static-power dissipation; Switched -capacitor circuits; Transimpedance stages; Bias voltage
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/50483
- DOI
- 10.1109/TCSI.2017.2676105
- ISSN
- 1549-8328
- Article Type
- Article
- Citation
- IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 64, no. 7, page. 1706 - 1717, 2017-07
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