Coded data generation or conversion – Analog to or from digital conversion – Analog to digital conversion
Patent
1990-03-26
1991-04-23
Scott, J. R.
Coded data generation or conversion
Analog to or from digital conversion
Analog to digital conversion
341155, 341161, H03M 138
Patent
active
050103407
ABSTRACT:
A charge based analog to digital converter includes a plurality of charge storage elements, each having a charge receive mode and a charge expel mode, and were in each of the charge storage elements is configured for storing a predetermined amount of charge. There is preferably a two to one ratio between the storage capacity of adjacent charge storage elements. A comparator includes a sensing diffusion connected to all of the charge storage elements. The comparator produces a "0" bit if the sensing diffusion is in a first condition, and a "1" bit if the sensing diffusion is in a second condition. Selection electronics connected to the charge storage elements selectively and successively set the individual charge storage elements in the charge expel mode to successively test the charge quantity stored in each charge storage element by the initial analog charge packet.
REFERENCES:
patent: 4136335 (1979-01-01), Tompsett
patent: 4206446 (1980-06-01), Rockett, Jr.
patent: 4329679 (1982-05-01), Jensen
patent: 4375059 (1983-02-01), Schlig
patent: 4471341 (1984-09-01), Sauer
Arthur David J.
Hamann H. Fredrick
Montanye George A.
Rockwell International Corporation
Scott J. R.
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