用于超大规模集成电路CCD图像传感器的超高灵敏度片上放大器

Digest of Technical Papers., 1990 Symposium on VLSI Circuits Pub Date : 1990-06-07 DOI:10.1109/VLSIC.1990.111094

Y. Matsunaga, H. Yamashita, S. Ohsawa, N. Harada

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摘要

研究了一种用于CCD(电荷耦合器件)图像传感器的新型高灵敏度片上放大器，该放大器的信号范围小于20个电子，这是高灵敏度成像器件的光子计数区域。由于0.084 mV RMS的输出噪声小于大信号区测量到的0.22 mV/电子的输出电压，因此在小信号区用示波器直接观察到与信号电子数相对应的离散电压电平。通过这一观察，证实了在极小信号区域保持高响应性。因此，实现光子计数固态图像传感器和高灵敏度百万像素级HDTV(高清电视)成像仪是可能的

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Ultra high sensitivity on-chip amplifier for VLSI CCD image sensor

A novel high-sensitivity on-chip amplifier for CCD (charge coupled device) image sensors is evaluated within a very small signal range of under 20 electrons, which is the photon counting region for highly sensitive imaging devices. Because the output noise of 0.084 mV RMS is smaller than the output voltage/electron of 0.22 mV/electron measured in the larger-signal region, the discrete voltage levels corresponding to numbers of signal electrons were directly observed in an oscilloscope in the small signal region. By this observation, it was confirmed that high responsivity is maintained in the very-small-signal region. Therefore, it is possible to realize a photon-counting solid-state image sensor and a highly sensitive megapixel-level HDTV (high-definition television) imager

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Digest of Technical Papers., 1990 Symposium on VLSI Circuits

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