Analog/digital or digital/analog converter having internal reference voltage selection
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United States of America Patent
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Apr 13, 2004
Grant Date -
Sep 12, 2002
app pub date -
Feb 4, 2002
filing date -
Aug 2, 1999
priority date (Note) -
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Abstract
An A/D converter or D/A converter has an internal voltage selection device. Several reference voltages are available for selection by the selection device, which selects a voltage based on a selection signal and feeds the reference voltage to a conversion device of the converter. A correction network is provided for correcting offset and linearity errors. The plurality of reference voltages are freely selectable reference voltages, and the specific reference voltage defining the conversion is freely selectable, that is, it is freely selectable what reference voltage is used to carry out a respective conversion.
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