著者

松浦 義昭 植田 千春 小林 健一

出版者

一般社団法人日本時計学会

雑誌

日本時計学会誌 (ISSN:00290416)

巻号頁・発行日

no.103, pp.28-41, 1982-12-25

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We have developed a very low power consumption lOOnA IC for analog quartz watch, using the current control system. As the reference voltage for the current source, we have used a circuit in which the threshold voltage of the depletion and enhancement MOS transistors and their ratio of conductance coefficient are used. For the current source, we have used the current saturation characteristic of MOS transistor. Further, this IC features excellent electrical characteristics, stable temperature characteristics and high yield, due to the CMOS Al gate process in which thin gate oxide is used.