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Digital and Analog Calibration Techniques for a Global Shutter CMOS Terahertz Image Sensor

<strong>We have developed a Si–CMOS terahertz image sensor to solve the paucity of low-cost terahertz detectors. The imaging pixel directly connects to a VCO-based ADC and achieves pixel parallel ADC architecture for high-speed global shutter THz imaging. In this paper, we propose a digital and analog calibration techniques for offset and gain variation of each pixel using global shutter operation. These techniques suppressed the variations by 85.7% and 89.4%, respectively, compared to without calibration. </strong>

Sensor Circuits and Systems

International Conference on Solid State Devices and Materials

2024 International Conference on Solid State Devices and Materials

2024 International Conference on Solid State Devices and Materials

[N-1-01 (Invited)]Digital and Analog Calibration Techniques for a Global Shutter CMOS Terahertz Image Sensor