一种具有相邻像素差感知的亚ff电容式指纹传感器

2016 5th International Symposium on Next-Generation Electronics (ISNE) Pub Date : 2016-05-04 DOI:10.1109/ISNE.2016.7543362

Meng-Lieh Sheu, L. Tsao

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引用次数: 6

摘要

针对电容式指纹传感器芯片的亚ff检测问题，提出了一种相邻像素差检测方案。采用0.18μm 1P6M CMOS工艺设计了16 × 16传感像素的概念验证芯片。在1.8 V电源下，输出范围为0.61-1.22 V。灵敏度为0.61 mV/af，电容差范围为- 500 af至500 af。

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A sub-fF capacitive fingerprint sensor with neighbor pixel difference sensing

A neighbor pixel difference sensing scheme is proposed for sub-fF detectability in the capacitive fingerprint sensor chip. A proof-of-concept chip with 16 × 16 sensing pixels is designed with 0.18μm 1P6M CMOS process. The output range is 0.61–1.22 V at 1.8 V power supply. A sensitivity of 0.61 mV/af is achieved for capacitance difference ranging from −500 aF to 500 aF.

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2016 5th International Symposium on Next-Generation Electronics (ISNE)

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