Noise performance of an implantable self-reset CMOS image sensor

Author

Yamaguchi, Takahiro ; Sunaga, Yoshinori ; Haruta, Makito ; Noda, Toshihiko ; Sasagawa, Kiyotaka ; Tokuda, Takashi ; Ohta, Jun

Author_Institution

Grad. Sch. of Mater. Sci., Nara Inst. of Sci. & Technol., Ikoma, Japan

fYear

2014

fDate

19-20 June 2014

Firstpage

1

Lastpage

2

Abstract

We developed and evaluated a miniaturized CMOS image sensor with self-reset function in order to improve signal-to-noise ratio (SNR) of an implantable imaging device. The sensor is capable to image under high intensity illumination where the peak SNR determined by the shot-noise is increased. The pixel size is 15-μm square, which is as small as neural cells and acceptable for implantable image sensor. With illumination of 1.7 × 10^-3 W/cm², and a frame rate of approximately 230 fps, SNR over 60 dB was achieved.

Keywords

CMOS image sensors; biomedical equipment; prosthetics; shot noise; SNR; high intensity illumination; implantable imaging device; implantable self-reset CMOS image sensor; miniaturized CMOS image sensor; shot noise; signal-to-noise ratio; Brain; CMOS image sensors; Fluorescence; Noise level; Signal to noise ratio; CMOS image sensor; fluorescent observation; high SNR sensor; in vivo implantation; neural activity imaging; self-reset;

fLanguage

English

Publisher

ieee

Conference_Titel

Future of Electron Devices, Kansai (IMFEDK), 2014 IEEE International Meeting for

Conference_Location

Kyoto

Print_ISBN

978-1-4799-3614-4

Type

conf

DOI

10.1109/IMFEDK.2014.6867073

Filename

6867073