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Volume 25
Issue 14
10.3390/s25144483
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This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

A 1000 fps High-Dynamic-Range Global Shutter CMOS Image Sensor with Full Thermometer Code Current-Steering Ramp

by
Liqiang Han
*,
Ganlin Cheng
,
Xu Zhang
,
Gengyun Wang
,
Weijun Pan
,
Yao Yao
,
Guihai Yu
,
Ruimeng Zhang
,
Shuaichen Mu
,
Songbo Wu
,
Hongbo Bu
,
Liqun Dai
,
Ben Fan
,
Dan Wang
,
Wei Fan
and
Ruiming Chen
*
Beijing Institute of Space Mechanics and Electricity, Beijing 100094, China
*
Authors to whom correspondence should be addressed.
Sensors 2025, 25(14), 4483; https://doi.org/10.3390/s25144483
Submission received: 16 June 2025 / Revised: 2 July 2025 / Accepted: 16 July 2025 / Published: 18 July 2025
(This article belongs to the Section Electronic Sensors)
Versions Notes

Abstract

We present a 1024 × 512, 1000 fps, high-dynamic-range global shutter CMOS image sensor. The pixel is based on a voltage domain global shutter architecture, featuring a pitch of 24 μm × 24 μm. Both high-gain and low-gain signals can be captured within a single frame. The combined dynamic range is 95 dB, and the full well capacity is 620 ke-. In this paper, we analyze the pixel noise performance as well as the non-linearity and image lag that arise from parasitic capacitance in the pixel. The ramp generator is based on a 12-bit full thermometer code current-steering DAC with high driving capability. We discuss the design considerations for the ramp generator, particularly addressing the phenomenon of non-linear response. Finally, the comparator design and the column readout noise are analyzed.
Keywords: CMOS image sensor; global shutter pixel; current-steering DAC; readout noise CMOS image sensor; global shutter pixel; current-steering DAC; readout noise

Share and Cite

MDPI and ACS Style

Han, L.; Cheng, G.; Zhang, X.; Wang, G.; Pan, W.; Yao, Y.; Yu, G.; Zhang, R.; Mu, S.; Wu, S.; et al. A 1000 fps High-Dynamic-Range Global Shutter CMOS Image Sensor with Full Thermometer Code Current-Steering Ramp. Sensors 2025, 25, 4483. https://doi.org/10.3390/s25144483

AMA Style

Han L, Cheng G, Zhang X, Wang G, Pan W, Yao Y, Yu G, Zhang R, Mu S, Wu S, et al. A 1000 fps High-Dynamic-Range Global Shutter CMOS Image Sensor with Full Thermometer Code Current-Steering Ramp. Sensors. 2025; 25(14):4483. https://doi.org/10.3390/s25144483

Chicago/Turabian Style

Han, Liqiang, Ganlin Cheng, Xu Zhang, Gengyun Wang, Weijun Pan, Yao Yao, Guihai Yu, Ruimeng Zhang, Shuaichen Mu, Songbo Wu, and et al. 2025. "A 1000 fps High-Dynamic-Range Global Shutter CMOS Image Sensor with Full Thermometer Code Current-Steering Ramp" Sensors 25, no. 14: 4483. https://doi.org/10.3390/s25144483

APA Style

Han, L., Cheng, G., Zhang, X., Wang, G., Pan, W., Yao, Y., Yu, G., Zhang, R., Mu, S., Wu, S., Bu, H., Dai, L., Fan, B., Wang, D., Fan, W., & Chen, R. (2025). A 1000 fps High-Dynamic-Range Global Shutter CMOS Image Sensor with Full Thermometer Code Current-Steering Ramp. Sensors, 25(14), 4483. https://doi.org/10.3390/s25144483

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