POTENTIAL GENERATING DEVICE

14-08-1997 дата публикации

Номер:

WO1997029548A1

Автор: KIMURA, Mutsumi

Принадлежит: Seiko Epson Corporation

Контакты:

Номер заявки: JP9700212

Дата заявки: 30-01-1997

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A device which can generate an accurate and stable potential. A D/A converter using binary-weighted (2n) capacitors is constituted by shifting the actual capacitance ratio from 2n. When the D/A converter is used, the capacitance ratio among a plurality of weighted capacitances (C1-C6) fluctuates and, even when the fluctuation becomes the worst, the value of the j-th capacitance is ensured to be larger than the sum of the values of all capacitances from the first one to the (j-1)-th one and, therefore, the "output inversion" of the D/A converter can be prevented surely. In addition, no such additional circuit as the correction circuit, etc., is required and the D/A converter can be manufactured easily at a low cost.

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