A 1000 fps High-Dynamic-Range Global Shutter CMOS Image Sensor with Full Thermometer Code Current-Steering Ramp
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...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-07-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/25/14/4483 |
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| author | 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 Ruiming Chen |
| author_facet | 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 Ruiming Chen |
| author_sort | Liqiang Han |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-74d8418c92fe4cb583a7cd6bc9be12c2 |
| institution | Kabale University |
| issn | 1424-8220 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj-art-74d8418c92fe4cb583a7cd6bc9be12c22025-08-20T03:32:18ZengMDPI AGSensors1424-82202025-07-012514448310.3390/s25144483A 1000 fps High-Dynamic-Range Global Shutter CMOS Image Sensor with Full Thermometer Code Current-Steering RampLiqiang Han0Ganlin Cheng1Xu Zhang2Gengyun Wang3Weijun Pan4Yao Yao5Guihai Yu6Ruimeng Zhang7Shuaichen Mu8Songbo Wu9Hongbo Bu10Liqun Dai11Ben Fan12Dan Wang13Wei Fan14Ruiming Chen15Beijing Institute of Space Mechanics and Electricity, Beijing 100094, ChinaBeijing Institute of Space Mechanics and Electricity, Beijing 100094, ChinaBeijing Institute of Space Mechanics and Electricity, Beijing 100094, ChinaBeijing Institute of Space Mechanics and Electricity, Beijing 100094, ChinaBeijing Institute of Space Mechanics and Electricity, Beijing 100094, ChinaBeijing Institute of Space Mechanics and Electricity, Beijing 100094, ChinaBeijing Institute of Space Mechanics and Electricity, Beijing 100094, ChinaBeijing Institute of Space Mechanics and Electricity, Beijing 100094, ChinaBeijing Institute of Space Mechanics and Electricity, Beijing 100094, ChinaBeijing Institute of Space Mechanics and Electricity, Beijing 100094, ChinaBeijing Institute of Space Mechanics and Electricity, Beijing 100094, ChinaBeijing Institute of Space Mechanics and Electricity, Beijing 100094, ChinaBeijing Institute of Space Mechanics and Electricity, Beijing 100094, ChinaBeijing Institute of Space Mechanics and Electricity, Beijing 100094, ChinaBeijing Institute of Space Mechanics and Electricity, Beijing 100094, ChinaBeijing Institute of Space Mechanics and Electricity, Beijing 100094, ChinaWe 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.https://www.mdpi.com/1424-8220/25/14/4483CMOS image sensorglobal shutter pixelcurrent-steering DACreadout noise |
| spellingShingle | 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 Ruiming Chen A 1000 fps High-Dynamic-Range Global Shutter CMOS Image Sensor with Full Thermometer Code Current-Steering Ramp Sensors CMOS image sensor global shutter pixel current-steering DAC readout noise |
| title | A 1000 fps High-Dynamic-Range Global Shutter CMOS Image Sensor with Full Thermometer Code Current-Steering Ramp |
| title_full | A 1000 fps High-Dynamic-Range Global Shutter CMOS Image Sensor with Full Thermometer Code Current-Steering Ramp |
| title_fullStr | A 1000 fps High-Dynamic-Range Global Shutter CMOS Image Sensor with Full Thermometer Code Current-Steering Ramp |
| title_full_unstemmed | A 1000 fps High-Dynamic-Range Global Shutter CMOS Image Sensor with Full Thermometer Code Current-Steering Ramp |
| title_short | A 1000 fps High-Dynamic-Range Global Shutter CMOS Image Sensor with Full Thermometer Code Current-Steering Ramp |
| title_sort | 1000 fps high dynamic range global shutter cmos image sensor with full thermometer code current steering ramp |
| topic | CMOS image sensor global shutter pixel current-steering DAC readout noise |
| url | https://www.mdpi.com/1424-8220/25/14/4483 |
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