3/4/2026 | 3:30 PM - 4:30 PM | Grand Peninsula B

A 72-dB SNR 1K-fps global shutter CMOS image sensor with dual pixel reset voltage and programmable gain amplifier

Author(s)

Kota Ogino | Tohoku university
Takezo Mawaki | Tohoku university
Rufuto Koba | Tohoku university
Ken Miyauchi | Tohoku university
Yushi Sakai | Tohoku university
Rihito Kuroda | Tohoku university

Details

This study presents a high-speed global shutter CMOS image sensor (CIS) designed for absorptive imaging applications requiring detection of small light amount differences. The sensor integrates a dual pixel reset voltage mechanism and a column programmable gain amplifier, enabling high-resolution readout under strong illumination. Fabricated using a 0.18 μm CMOS process, the CIS features a two-stage lateral overflow integration capacitor pixel architecture, trench-type sample-and-hold capacitors, and correlated multiple sampling for low-noise performance. Experimental results demonstrate a dynamic range of 128 dB and a maximum signal-to-noise ratio (SNR) of 72 dB at 1000 fps. Imaging examples confirm gain-dependent SNR enhancement and amplifier input range trade-offs. Comparative analysis shows the developed CIS achieves a superior figure of merit relative to previously reported global shutter CIS, highlighting its potential for high-precision spectroscopic and fluid concentration distribution measurements.