A/D converter

Details A/D converter A/D converter

2007-08-10

2010-11-16

Jeanglaude, Jean B (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

C341S156000

Reexamination Certificate

active

07834794

ABSTRACT:
The conventional A/D converter has a drawback that the conversion precision is degraded when the operation periods of the constituents of the A/D converter are shortened due to the duty ratio of an external input clock because the operation periods of the constituents of the A/D converter depend on the pulse width of the external input clock. However, a highly-precise A/D conversion operation independent of the duty ratio of the external input clock can be realized by providing a circuit for detecting the operation periods of the constituents of the A/D converter, and adjusting the duty ratio of the operation clock according to the detected operation periods of the constituents of the A/D converter.

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International Search Report issued Sep. 25, 2007 in the International (PCT) Application No. PCT/JP2007/065698.
Written Opinion of the ISA issued Sep. 25, 2007 in the International (PCT) Application No. PCT/JP2007/065698.

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