A 64×64 APD-Based ToF Image Sensor with Background Light Suppression up to 200 klx Using In-Pixel Auto-Zeroing and Chopping

Byungchoul Park; Injun Park; Woojun Choi; Youngcheol Chae

doi:10.23919/VLSIC.2019.8778015

A 64×64 APD-Based ToF Image Sensor with Background Light Suppression up to 200 klx Using In-Pixel Auto-Zeroing and Chopping

Byungchoul Park, Injun Park, Woojun Choi, Youngcheol Chae

Department of Electrical and Electronic Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

9 Citations (Scopus)

Abstract

This paper presents a time-of-flight (ToF) image sensor for outdoor applications. The sensor employs a gain-modulated avalanche photodiode (APD) that achieves high modulation frequency. The suppression capability of background light is greatly improved up to 200klx by using a combination of in pixel auto-zeroing and chopping. A64 × 64 APD-based ToF sensor is fabricated in a0.11 μ m CMOS. It achieves depth ranges from 0.5 to 2 m with 25MHz modulation and from 2 to 20 m with 1.56MHz modulation. For both ranges, it achieves a non-linearity below 0.8% and a precision below 3.4% at a 3D frame rate of 96fps.

Original language	English
Title of host publication	2019 Symposium on VLSI Circuits, VLSI Circuits 2019 - Digest of Technical Papers
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	C256-C257
ISBN (Electronic)	9784863487185
DOIs	https://doi.org/10.23919/VLSIC.2019.8778015
Publication status	Published - 2019 Jun
Event	33rd Symposium on VLSI Circuits, VLSI Circuits 2019 - Kyoto, Japan Duration: 2019 Jun 9 → 2019 Jun 14

Publication series

Name	IEEE Symposium on VLSI Circuits, Digest of Technical Papers
Volume	2019-June

Conference

Conference	33rd Symposium on VLSI Circuits, VLSI Circuits 2019
Country/Territory	Japan
City	Kyoto
Period	19/6/9 → 19/6/14

Bibliographical note

Publisher Copyright:
© 2019 JSAP.

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

Access to Document

10.23919/VLSIC.2019.8778015

Cite this

Park, B., Park, I., Choi, W., & Chae, Y. (2019). A 64×64 APD-Based ToF Image Sensor with Background Light Suppression up to 200 klx Using In-Pixel Auto-Zeroing and Chopping. In 2019 Symposium on VLSI Circuits, VLSI Circuits 2019 - Digest of Technical Papers (pp. C256-C257). Article 8778015 (IEEE Symposium on VLSI Circuits, Digest of Technical Papers; Vol. 2019-June). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.23919/VLSIC.2019.8778015

Park, Byungchoul ; Park, Injun ; Choi, Woojun et al. / A 64×64 APD-Based ToF Image Sensor with Background Light Suppression up to 200 klx Using In-Pixel Auto-Zeroing and Chopping. 2019 Symposium on VLSI Circuits, VLSI Circuits 2019 - Digest of Technical Papers. Institute of Electrical and Electronics Engineers Inc., 2019. pp. C256-C257 (IEEE Symposium on VLSI Circuits, Digest of Technical Papers).

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title = "A 64×64 APD-Based ToF Image Sensor with Background Light Suppression up to 200 klx Using In-Pixel Auto-Zeroing and Chopping",

abstract = "This paper presents a time-of-flight (ToF) image sensor for outdoor applications. The sensor employs a gain-modulated avalanche photodiode (APD) that achieves high modulation frequency. The suppression capability of background light is greatly improved up to 200klx by using a combination of in pixel auto-zeroing and chopping. A64 × 64 APD-based ToF sensor is fabricated in a0.11 μ m CMOS. It achieves depth ranges from 0.5 to 2 m with 25MHz modulation and from 2 to 20 m with 1.56MHz modulation. For both ranges, it achieves a non-linearity below 0.8% and a precision below 3.4% at a 3D frame rate of 96fps.",

author = "Byungchoul Park and Injun Park and Woojun Choi and Youngcheol Chae",

note = "Publisher Copyright: {\textcopyright} 2019 JSAP.; 33rd Symposium on VLSI Circuits, VLSI Circuits 2019 ; Conference date: 09-06-2019 Through 14-06-2019",

year = "2019",

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language = "English",

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Park, B, Park, I, Choi, W & Chae, Y 2019, A 64×64 APD-Based ToF Image Sensor with Background Light Suppression up to 200 klx Using In-Pixel Auto-Zeroing and Chopping. in 2019 Symposium on VLSI Circuits, VLSI Circuits 2019 - Digest of Technical Papers., 8778015, IEEE Symposium on VLSI Circuits, Digest of Technical Papers, vol. 2019-June, Institute of Electrical and Electronics Engineers Inc., pp. C256-C257, 33rd Symposium on VLSI Circuits, VLSI Circuits 2019, Kyoto, Japan, 19/6/9. https://doi.org/10.23919/VLSIC.2019.8778015

A 64×64 APD-Based ToF Image Sensor with Background Light Suppression up to 200 klx Using In-Pixel Auto-Zeroing and Chopping. / Park, Byungchoul; Park, Injun; Choi, Woojun et al.
2019 Symposium on VLSI Circuits, VLSI Circuits 2019 - Digest of Technical Papers. Institute of Electrical and Electronics Engineers Inc., 2019. p. C256-C257 8778015 (IEEE Symposium on VLSI Circuits, Digest of Technical Papers; Vol. 2019-June).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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Park B, Park I, Choi W, Chae Y. A 64×64 APD-Based ToF Image Sensor with Background Light Suppression up to 200 klx Using In-Pixel Auto-Zeroing and Chopping. In 2019 Symposium on VLSI Circuits, VLSI Circuits 2019 - Digest of Technical Papers. Institute of Electrical and Electronics Engineers Inc. 2019. p. C256-C257. 8778015. (IEEE Symposium on VLSI Circuits, Digest of Technical Papers). doi: 10.23919/VLSIC.2019.8778015

A 64×64 APD-Based ToF Image Sensor with Background Light Suppression up to 200 klx Using In-Pixel Auto-Zeroing and Chopping

Abstract

Publication series

Conference

Bibliographical note

All Science Journal Classification (ASJC) codes

Access to Document

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