Method and device for integrated testing for an analog-to-digital converter
AssigneeCentre National de la Recherche Scientifique (CNRS)
InventorsMichel Renovell, Florence Azais, Serge Bernard, Yves Bertrand
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Abstract
A device for self-testing of an analog-to-digital converter includes elements for applying to the converter test signals and analyzing elements. The analyzing elements include common resources (10,36) integrated in the circuit bearing the converter and capable of being configured to determine successively shift, gain and non-linearities of the converter and elements for configuring and controlling the common resources (10,36) so as to adapt them to the characteristics to be determined.
Claims15
A method of testing an analog to digital converter by histogram, the method being carried out on common resources integrated with the digital converter, wherein the method consists of:
- accumulating the histogram code by code or group of codes by group of codes;
- and
- sequentially processing information relating to each code or group of codes in order to determine at least a functional characteristic of the converter,
- wherein after processing of a code or group of codes, the common resources are released and made available for a following code or group of codes, so that at a given time in the processing, the common resources relate only to a current code or group of codes simultaneously processed.
A self-test device for an analog to digital converter for implementing a method of testing the analog to digital converter by histogram, by accumulating the histogram code by code or group of codes by group of codes, and
- sequentially processing information relating to each code or group of codes in order to determine at least a functional characteristic of the converter,
- the self-test device comprising:
- means of applying test signals to the converter;
- and
- analysis means, wherein, said analysis means include integrated and configurable common resources for accumulating the histogram code by code or group of codes by group of codes, and sequentially processing information relating to each code or group of codes and means for configuring said common resources to, after processing of a code or group of codes, release and make available the common resources for the following code or group of codes, so that at a given time in the processing, the common resources relate only to the current code or group of codes simultaneously processed.
An analog to digital converter, comprising an integrated self-test device for implementing a method of testing the analog to digital converter by histogram, by
- accumulating the histogram code by code or group of codes by group of codes, and
- sequentially processing information relating to each code or group of codes in order to determine at least a functional characteristic of the converter,
- the self-test device comprising:
- means of applying test signals to the converter;
- and
- analysis means, wherein, said analysis means include
- integrated and configurable common resources for accumulating the histogram code by code or group of codes by group of codes, and sequentially processing information relating to each code or group of codes, and
- means of configuring said common resources to, after processing of a code or group of codes, release and make available the common resources for the following code or group of codes, so that at a given time in the processing, the common resources relate only to the current code or group of codes simultaneously processed.
Dependencies are inferred from the claim text.