CCD Digital-to-analog converter
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United States of America Patent
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Jul 15, 1980
Grant Date -
N/A
app pub date -
Mar 6, 1978
filing date -
Mar 6, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A digital-to-analog converter is described in which a first circuit including charge storage means provides charge packets corresponding to digitally weighted samples of an analog reference voltage. A predetermined pattern of digital signals cooperates with gating means to determine which charge storage devices in a second circuit will be charged with the charge packets stored in the first circuit. In one embodiment, the selected charges stored in the second circuit are shifted serially, accumulated, and sensed to provide an analog output signal. In another embodiment, the selected charges stored in the second circuit are accumulated and sensed.
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