Joonseok Park, E. Culurciello, Dongsoo Kim, J. V. Verhagen, S. H. Gautam, V. Pieribone
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引用次数: 11
摘要
介绍了一种用于电压敏感染料成像系统的32 × 32像素的体CMOS图像传感器。该系统将安装在清醒和自由活动的动物身上，以测量大脑活动。该图像传感器能够使用片上存储电容实现片上时间差。时间差是用来减少对整个读出电路的压力，以满足这样一个系统的尺寸和功率限制。每个75 μ m × 75 μ m像素由74 μ m × 34 μ m的光电二极管和788 fF的存储电容组成。图像传感器的信噪比为76 dB。
Voltage sensitive dye imaging system for awake and freely moving animals
A 32 times 32 pixel image sensor in bulk CMOS process for use in a custom voltage sensitive dye imaging system is presented. The system is to be mounted on awake and freely moving animals in order to measure brain activity. The image sensor is capable of on-chip temporal-differencing using a storage capacitor on-chip. Temporal-differencing is used to reduce the stress on the overall readout circuitry in order to meet size and power constraints of such a system. Each 75 mum times 75 mum pixel consists of a photodiode of 74 mum times 34 mum and a storage capacitor of 788 fF. The image sensor has a signal-to-noise ratio of 76 dB.
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