Title:
A/D CONVERTER AND SEMICONDUCTOR DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/185593
Kind Code:
A1
Abstract:
Generally, in a power supply circuit included in a flash type A/D converter, different voltages are applied across resistors connected in series, and divided voltages are used as reference voltages. Consequently, a steady current flows through the resistors in series, resulting in an increase in the power consumption of the power supply circuit. The present invention addresses the problem by applying an OS transistor and a capacitive element in the power supply circuit, thereby allowing a reference voltage to be maintained for a long time even in the absence of power supply. In this way, the power consumption of the power supply circuit of a flash type A/D converter can be reduced.
Inventors:
YONEDA SEIICHI (JP)
Application Number:
PCT/IB2018/051960
Publication Date:
October 11, 2018
Filing Date:
March 23, 2018
Export Citation:
Assignee:
SEMICONDUCTOR ENERGY LAB (JP)
International Classes:
H03M1/36; H01L21/336; H01L21/8242; H01L27/108; H01L29/786; H01L29/788; H01L29/792
Foreign References:
| JPS60102024A | 1985-06-06 | |||
| JP2014200080A | 2014-10-23 | |||
| JP2012239161A | 2012-12-06 |
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