A 32×32 SPAD array based readout integrated circuit for LiDAR applications

Jing Cao; Xiaoyan Hu; Lijun Yang; Bin Li

doi:10.1117/12.2585367

4 December 2020 A 32×32 SPAD array based readout integrated circuit for LiDAR applications

Jing Cao, Xiaoyan Hu, Lijun Yang, Bin Li

Proceedings Volume 11617, International Conference on Optoelectronic and Microelectronic Technology and Application; 116172O (2020) https://doi.org/10.1117/12.2585367
Event: International Conference on Optoelectronic and Microelectronic Technology and Application, 2020, Nanjing, China

Abstract

This paper presents a readout integrated circuit (ROIC) for 32×32 single photon avalanche diode (SPAD) array. The ROIC integrates 32×32 active quenching circuit and time-to-digital converter (TDC) circuit. Each ROIC unit has a novel active quenching circuit (AQC) and an in-pixel TDC. The ROIC and the detectors are integrated by Flip-Chip .The novel quenching circuit with active reset function is proposed to reduce the dead time. A dual-counter-based TDC is designed to prevent the metastability of the counter. The sensor is fabricated in 180-nm CMOS BCD technology. The simulation results show the novel active quenching circuit effectively reduces the dead time down to 10 ns. The 13bit-TDC helps the system achieve centimeter-accuracy detection.

Citation Download Citation

Jing Cao, Xiaoyan Hu, Lijun Yang, and Bin Li "A 32×32 SPAD array based readout integrated circuit for LiDAR applications", Proc. SPIE 11617, International Conference on Optoelectronic and Microelectronic Technology and Application, 116172O (4 December 2020); https://doi.org/10.1117/12.2585367

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available