ISSCC 2021: Sony 50.1MP Full-Frame Sensor with Sigma-Delta ADC and kTC Noise Reduction

Image Sensors World        Go to the original article...

Sony presents its full-frame 50.1MP sensor, apparently used in its new Alpha 1 high-end mirrorless camera:

"A High-Speed Back-Illuminated Stacked CMOS Image Sensor with Column-Parallel kT/C-Cancelling S&H and Delta-Sigma ADC"
by Chihiro Okada, Koushi Uemura, Luong Hung, Kouji Matsuura, Takashi Moue, Daisuke Yamazaki, Kazutoshi Kodama, Masafumi Okano, Takafumi Morikawa, Kazuyoshi Yamashita, Osamu Oka, Itai Shvartz, Golan Zeituni,  Ariel Benshem, Noam Eshel, Yoshiaki Inada.

"Sony presents a 50.1Mpixel, 4.16μm-pitch, back-illuminated stacked CIS with a pipelined column-parallel kT/C noise-cancelling sample-and-hold circuit and a 14b delta-sigma ADC achieving 1.18e-rms random noise at 250fps. The design splits the pixel signal line to lower the wiring load and increase the operation speed."

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