Analog to digital converter circuit
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United States of America Patent
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Oct 21, 1986
Grant Date -
N/A
app pub date -
Dec 14, 1984
filing date -
Dec 14, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A circuit for converting analog to digital data uses a CMOS multiplexer, an analog to digital converter and an operational amplifier buffer controlled by a single chip microprocessor. An FET shunt circuit is connected to the input of the operational amplifier in order to pull the input to ground during a conversion cycle of the converter and the resulting data is read and used to adjust the data from subsequent data conversions to correct for offsets of the operational amplifier and the converter.
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