Multi-Input Floating Gate Differential Amplifier and Application to Intelligent Sensors

Authors:
Takeyasu Sakai;Hiromasa Nagai;Takashi Matsumoto
Affiliations:
Electronic Navigation Research Institute, Ministry of Transport, Mitaka-shi, 181–0004 Japan;Department of Electrical, Electronics and Computer Engineering, Waseda University, Tokyo, 169–8555 Japan;Department of Electrical, Electronics and Computer Engineering, Waseda University, Tokyo, 169–8555 Japan
Venue:
Analog Integrated Circuits and Signal Processing - Analog circuit techniques and related topics
Year:
2000

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Abstract

Multi-input floating gate differential amplifier (FGDA) is proposed which can perform any convolution operation with differential structure and feedback loop. All operations are in the voltage mode. Only one terminal is required for the negative feedback which can suppress distortions due to mismatches of active elements. Possible applications include intelligent image sensor, where fully parallel DCT operation can be performed. A prototype chip is fabricated which is functional. A preliminary test result is reported.