Analog to digital converter circuit

Details Analog to digital converter circuit Analog to digital converter circuit

1984-12-14

1986-10-21

Miller, Charles D.

Communications: electrical

Audible indication

Percussion-type sound producer

340347AD, H03M 110

Patent

active

046188487

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.

REFERENCES:
patent: 3725903 (1973-03-01), Kosakowski
patent: 4129864 (1978-12-01), Carpenter
patent: 4366469 (1982-12-01), Michaels
Boyacigiller, "EDN" Aug. 18, 1982, vol. 27, No. 16, pp. 137-144.
Kinberg, "IBM Technical Disclosure Bulletin," vol. 9, No. 11, Apr. 1967, pp. 1537-1538.

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