Variable conversion rate analog-to-digital converter
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United States of America Patent
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-
Jul 7, 1992
Grant Date -
N/A
app pub date -
Jun 5, 1990
filing date -
Jun 5, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A high resolution and high speed analog to digital converter for use with a transducer in measuring parameters such as weight, which may stay the same or which may change in the system, the converter having an integrator which integrates for a fixed period the output voltage from the transducer, and subsequently deintegrates a known reference voltage, the deintegration times varying depending upon the magnitude of the transducer output voltage which has been integrated, a comparator comparing the deintegration times of successive conversions and shortening the integration times for the transducer output so as to obtain more conversions per time period to provide a high speed readout when the transducer output is changing, but lengthening the integration times to provide a high resolution readout when the comparison of deintegration times does not reveal any change in the transducer output.
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