Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Toshio Teraishi0
Shiming Lan0
Date of Patent
December 9, 2008
Patent Application Number
11812293
Date Filed
June 18, 2007
Patent Primary Examiner
Patent abstract
A digital-to-analog converter generates a monotonic sequence of reference voltages and selects an arbitrary pair of reference voltages, adjacent in the monotonic sequence. One of the selected reference voltages is supplied through a resistor and a switching device, connected in series, to the output terminal of the converter. The other selected reference voltage is supplied through another resistor and another switching device, connected in series, to the same output terminal. This arrangement saves space, and enables variations in the output voltage levels to-be kept within tolerance by use of resistors with sufficiently high resistance values.
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