Design and analysis of an analog signal readout circuit for SPAD

Xiang-Liang Jin; Duo-Duo Zeng; Hong-Jiao Yang; Yang Wang; Jun Luo

doi:10.1117/12.2505035

12 December 2018 Design and analysis of an analog signal readout circuit for SPAD

Xiang-Liang Jin, Duo-Duo Zeng, Hong-Jiao Yang, Yang Wang, Jun Luo

Proceedings Volume 10845, Three-Dimensional Image Acquisition and Display Technology and Applications; 108450E (2018) https://doi.org/10.1117/12.2505035
Event: International Symposium on Optoelectronic Technology and Application 2018, 2018, Beijing, China

Abstract

-In this paper, an ultralow and high speed photocurrent analog signal readout circuit in order to amplify and process the output of SPAD(single-photon avalanche diodes) photocurrent is presented. The four main parts of the ASIC are low temperature coefficient(7.85ppm/°C) bandgap reference circuit, high linearity and high common-mode rejection ratio(120.6dB) operational amplifier, filter circuit and low-delay(63ns/1MHZ) comparator circuit. The SPAD readout chip is fabricated in a standard 0.5um CMOS process and size of 672um*780um. The simulation results indicate the chip successfully amplifies and processes 80nA and 1MHZ photocurrent analog signal. The circuit is fit for processing fleetness change and faint signal in CMOS image sensor of acquisition technology.

Citation Download Citation

Xiang-Liang Jin, Duo-Duo Zeng, Hong-Jiao Yang, Yang Wang, and Jun Luo "Design and analysis of an analog signal readout circuit for SPAD", Proc. SPIE 10845, Three-Dimensional Image Acquisition and Display Technology and Applications, 108450E (12 December 2018); https://doi.org/10.1117/12.2505035

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