ON-CHIP ANALOG-TO-DIGITAL CONVERTER (ADC) LINEARITY TEST FOR EMBEDDED DEVICES

ON-CHIP ANALOG-TO-DIGITAL CONVERTER (ADC) LINEARITY TEST FOR EMBEDDED DEVICES

A method for testing linearity of an ADC, comprising receiving a trigger signal indicating an ADC input voltage step adjustment, reading an ADC output sample upon receiving the trigger signal, wherein the ADC output sample has a value range of N integer values that correspond to N discrete ADC outpu...

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Hauptverfasser: MOUSHEGIAN, Ken, ALLEMAN, Andrew, HARRINGTON, Cormac
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
BASIC ELECTRONIC CIRCUITRY
CODE CONVERSION IN GENERAL
CODING
DECODING
ELECTRICITY
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creator MOUSHEGIAN, Ken
ALLEMAN, Andrew
HARRINGTON, Cormac
description A method for testing linearity of an ADC, comprising receiving a trigger signal indicating an ADC input voltage step adjustment, reading an ADC output sample upon receiving the trigger signal, wherein the ADC output sample has a value range of N integer values that correspond to N discrete ADC output codes, computing a histogram of code occurrences for M consecutive ADC output codes, wherein the histogram comprises M number of bins corresponding to the M consecutive ADC output codes, and wherein M is less than N, updating a DNL value and an INL value according to the histogram at an interval of K number of ADC output sample readings, and shifting the histogram by one ADC output code after updating the DNL and the INL values.
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subjects BASIC ELECTRONIC CIRCUITRY
CODE CONVERSION IN GENERAL
CODING
DECODING
ELECTRICITY
title ON-CHIP ANALOG-TO-DIGITAL CONVERTER (ADC) LINEARITY TEST FOR EMBEDDED DEVICES
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