A/D converter device and electronic control apparatus...

Details A/D converter device and electronic control apparatus... A/D converter device and electronic control apparatus...

2008-09-23

2008-09-23

Nguyen, Linh V (Department: 2819)

Coded data generation or conversion

Converter calibration or testing

C341S118000, C341S122000, C341S155000

Reexamination Certificate

active

11790139

ABSTRACT:
The A/D converter device includes a comparing section and an abnormality judging section. The comparing section compares a voltage of its signal transfer line connected between its input multiplexer and its A/D converting section through its sample-hold section with a predetermined abnormality judging voltage. The abnormality judging section is configured to apply a reference voltage to the signal transfer line in synchronization with an A/D conversion cycle thereof on condition that its A/D converting operation thereof is not interrupted, and to determine presence of abnormality in the A/D converter device if an comparison result of the comparing section does not match an expected value corresponding to the reference voltage.

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