A high S/N ratio and high full well capacity CMOS image sensor with active pixel readout feedback operation

Woonghee Lee; Nana Akahane; Satoru Adachi; Koichi Mizobuchi; Shigetoshi Sugawa

doi:10.1109/ASSCC.2007.4425780

A high S/N ratio and high full well capacity CMOS image sensor with active pixel readout feedback operation

Woonghee Lee, Nana Akahane, Satoru Adachi, Koichi Mizobuchi, Shigetoshi Sugawa

ENG - Management Science and Technology

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

17 Citations (Scopus)

Abstract

We discuss results of the design and operations of a CMOS image sensor with high S/N ratio while keeping wide dynamic range. Readout gains and input-referred noises of the image sensor are improved by actively using a pixel source follower feedback operation. A 1/4-inch 5.6 μm × 5.6 μm pixel VGA color CMOS image sensor with a lateral overflow integration capacitor in pixel in a 0.18 μm 2P3M CMOS process achieves about 1.7 times the gain compared with the case where the feedback operation is not positively used, resulting in a high input-referred conversion gain exceeded 200 μV/e ^-, a low inputreferred noise below 2 e^- without column amplifier and a high full well capacity of about 1.3 × 10⁵ e^-.

Original language	English
Title of host publication	2007 IEEE Asian Solid-State Circuits Conference, A-SSCC
Pages	260-263
Number of pages	4
DOIs	https://doi.org/10.1109/ASSCC.2007.4425780
Publication status	Published - 2007 Dec 1
Event	2007 IEEE Asian Solid-State Circuits Conference, A-SSCC - Jeju, Korea, Republic of Duration: 2007 Nov 12 → 2007 Nov 14

Publication series

Name	2007 IEEE Asian Solid-State Circuits Conference, A-SSCC

Other

Other	2007 IEEE Asian Solid-State Circuits Conference, A-SSCC
Country/Territory	Korea, Republic of
City	Jeju
Period	07/11/12 → 07/11/14

ASJC Scopus subject areas

Hardware and Architecture
Electrical and Electronic Engineering

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10.1109/ASSCC.2007.4425780

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A high S/N ratio and high full well capacity CMOS image sensor with active pixel readout feedback operation. / Lee, Woonghee; Akahane, Nana; Adachi, Satoru et al.

2007 IEEE Asian Solid-State Circuits Conference, A-SSCC. 2007. p. 260-263 4425780 (2007 IEEE Asian Solid-State Circuits Conference, A-SSCC).

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

Lee, W, Akahane, N, Adachi, S, Mizobuchi, K & Sugawa, S 2007, A high S/N ratio and high full well capacity CMOS image sensor with active pixel readout feedback operation. in 2007 IEEE Asian Solid-State Circuits Conference, A-SSCC., 4425780, 2007 IEEE Asian Solid-State Circuits Conference, A-SSCC, pp. 260-263, 2007 IEEE Asian Solid-State Circuits Conference, A-SSCC, Jeju, Korea, Republic of, 07/11/12. https://doi.org/10.1109/ASSCC.2007.4425780

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abstract = "We discuss results of the design and operations of a CMOS image sensor with high S/N ratio while keeping wide dynamic range. Readout gains and input-referred noises of the image sensor are improved by actively using a pixel source follower feedback operation. A 1/4-inch 5.6 μm × 5.6 μm pixel VGA color CMOS image sensor with a lateral overflow integration capacitor in pixel in a 0.18 μm 2P3M CMOS process achieves about 1.7 times the gain compared with the case where the feedback operation is not positively used, resulting in a high input-referred conversion gain exceeded 200 μV/e -, a low inputreferred noise below 2 e- without column amplifier and a high full well capacity of about 1.3 × 105 e-.",

author = "Woonghee Lee and Nana Akahane and Satoru Adachi and Koichi Mizobuchi and Shigetoshi Sugawa",

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AU - Mizobuchi, Koichi

AU - Sugawa, Shigetoshi

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AB - We discuss results of the design and operations of a CMOS image sensor with high S/N ratio while keeping wide dynamic range. Readout gains and input-referred noises of the image sensor are improved by actively using a pixel source follower feedback operation. A 1/4-inch 5.6 μm × 5.6 μm pixel VGA color CMOS image sensor with a lateral overflow integration capacitor in pixel in a 0.18 μm 2P3M CMOS process achieves about 1.7 times the gain compared with the case where the feedback operation is not positively used, resulting in a high input-referred conversion gain exceeded 200 μV/e -, a low inputreferred noise below 2 e- without column amplifier and a high full well capacity of about 1.3 × 105 e-.

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A high S/N ratio and high full well capacity CMOS image sensor with active pixel readout feedback operation

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