Gray code current mode analog-to-digital converter

Details Gray code current mode analog-to-digital converter Gray code current mode analog-to-digital converter

2011-03-22

2011-03-22

Williams, Howard (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

With particular solid state devices

C341S136000

Reexamination Certificate

active

07911366

ABSTRACT:
One embodiment of the present invention is a Gray code current-mode analog to digital (ADC) converter using a Gray code current-mode ADC building block. The Gray code current-mode ADC building block can produce a Gray code bit and a current output that is sent to a next Gray code ADC building block. In one embodiment, the Gray code current-mode ADC building block does not use a voltage comparator in a signal path of the current output. In one embodiment, an 8 bit analog-to-digital converter can have a 65 ns conversion time and consume only 10 mW of power with a single +5.0V supply.

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U.S. International Searching Authority, International Search Report and Written Opinion for International Appln. No. PCT/US2009/055929, Oct. 19, 2009, 8 pages.

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