Bootstrapped Fully Differential CMOS Transimpedance Amplifier
- 주제(키워드) Bootstrap , CMOS , fully differential , mirrored-cascode , TIA
- 주제(기타) Engineering, Electrical & Electronic
- 주제(기타) Physics, Applied
- 설명문(일반) [Park, Yoonji; Kim, Ji-Hoon; Park, Sung Min] Ewha Womans Univ, Dept Elect & Elect Engn, Seoul, South Korea
- 등재 SCIE, SCOPUS, KCI등재
- 발행기관 IEEK PUBLICATION CENTER
- 발행년도 2020
- 총서유형 Journal
- URI http://www.dcollection.net/handler/ewha/000000169430
- 본문언어 영어
- Published As https://dx.doi.org/10.5573/JSTS.2020.20.1.001
- 저작권 이화여자대학교 논문은 저작권에 의해 보호받습니다.
초록/요약
This paper presents a novel bootstrapped fully differential CMOS transimpedance amplifier (BFD-TIA) for the applications of unmanned vehicle LiDAR systems. In particular, the mirrored-cascode input stage is proposed to create a fully differential input configuration, which consists of a cascode input stage and its mirrored differential stage by passing the inverted output at the drain node of the common-source transistor over to the gate of the mirrored differential stage through an AC-coupling capacitor. Also, bootstrapping technique is exploited to reduce the direct effect of the notorious photodiode capacitance upon the bandwidth and noise performance in a typical voltage-mode TIA. Test chips of the proposed BFD-TIA were implemented by using a 0.13-mu m CMOS technology. Measured results demonstrate 86-dBO transimpedance gain, 500-Mb/s operation speed for a 0.5-pF photodiode capacitance, 7.5-pA/sqrt( Hz) average noise current spectral density, and 24-mW power consumption from a single 1.2-V supply. Chip core occupies the area of 0.022 mm(2).
more