Offset and Charge Injection Compensation in an Incremental Analog to Digital Converter

1 September 1985

conference paper
Published by Institute of Electrical and Electronics Engineers (IEEE)

p. 45-48
https://doi.org/10.1109/esscirc.1985.5467982

Abstract

This paper describes a high-resolution incremental A/D converter integrated in a CMOS technology. The accuracy of the converter is independent of the precision of capacitance ratios or comparator. An autozero system cancels error sources such as the operational amplifier offset voltage and the charge injection due to the MOS transistor switches. Unlike for other MOS A/D converters, bipolar operation requires only a single voltage reference.

Keywords

ANALOG-DIGITAL CONVERSION
VOLTAGE
CMOS TECHNOLOGY
SWITCHES
COUNTING CIRCUITS
CAPACITANCE
OPERATIONAL AMPLIFIERS
MOSFETS
DIGITAL CONTROL
DIGITAL SIGNAL PROCESSING

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