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A 16-Channel Analog CMOS SiPM With On-Chip Front-End for D-ToF LiDAR.
- Source :
-
IEEE Transactions on Circuits & Systems. Part I: Regular Papers . Jun2022, Vol. 69 Issue 6, p2376-2386. 11p. - Publication Year :
- 2022
-
Abstract
- This article presents a 16-channel analog silicon photomultiplier (SiPM) with on-chip front-end for direct time-of-flight (D-ToF) LiDAR applications. The proposed receiver is mainly composed of 16-channel SiPM, variable gain amplifier (VGA) and time-to-digital converter (TDC). Each SiPM channel consists of 256 microcells, and their outputs are connected to a common output terminal in parallel. A novel active quenching circuit is adopted to reduce the long exponential tail in conventional SiPM and enable the capability of multi-echo detection. Current steering circuits are adopted within microcells to make the output current of SiPM immune to SPAD gain variations. The receiver was fabricated in 180-nm HV CMOS technology and integrated into the 16-line LiDAR prototype with optical components. Measurement results show that the sensor is capable of 20 m range imaging with 3 cm accuracy under 40 klux background light conditions. With the mechanical scanning system, a high-resolution image ($240\times16$) can be obtained. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 15498328
- Volume :
- 69
- Issue :
- 6
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Circuits & Systems. Part I: Regular Papers
- Publication Type :
- Periodical
- Accession number :
- 157191488
- Full Text :
- https://doi.org/10.1109/TCSI.2022.3160265