A-D converter and A-D convert method

Details A-D converter and A-D convert method A-D converter and A-D convert method

2007-09-12

2009-10-20

Jeanglaude, Jean B (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

C341S156000, C341S158000, C341S159000

Reexamination Certificate

active

07605738

ABSTRACT:
There is provided an A/D converter that outputs a digital output signal obtained by digitalizing an analog input signal. The A/D converter includes a bit selecting section that selects a conversion object bit from a high-order bit to a low-order bit of the digital output signal in order, a threshold-value controlling section that determines a threshold data expressing a boundary value between zero and one of the conversion object bit, a D/A converting section that digital-to-analog converts the threshold data and generates an analog threshold value, a comparing section that compares, at a plurality of different timings in a conversion time interval determining a value of the conversion object bit, the analog input signal and the analog threshold value and outputs a plurality of comparison results at the timings, and a bit determining section that determines the value of the conversion object bit.

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