Analog-to-digital conversion circuit and image processing...

Details Analog-to-digital conversion circuit and image processing... Analog-to-digital conversion circuit and image processing...

2005-04-19

2005-04-19

Tokar, Michael (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

C341S155000

Reexamination Certificate

active

06882297

ABSTRACT:
A multi-stage pipelined AD converter has n stages of conversion units, such as a first conversion unit, a second conversion unit, an (n−1)th conversion unit, and an nth conversion unit, which successively convert an analog signal into a digital signal each by several bits starting from the most significant bit. Each of the converted digital signals of several bits is combined in a digital output circuit. A first voltage source supplies a higher voltage than a second voltage source. The first voltage source supplies a high voltage to the first stage or the first conversion unit, while the second voltage source supplies a low voltage to the second and subsequent stages of the second conversion unit to the nth conversion unit which require a lower analog accuracy.

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patent: 9-69776 (1997-03-01), None

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