Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Masumi Kon0
Date of Patent
April 16, 2013
0Patent Application Number
131955560
Date Filed
August 1, 2011
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A low power consumption DA converter includes a segment type DA converter and an R-2R resistance ladder DA converter. The segment type DA converter is coupled to a power source voltage VDD and outputs a current signal changing in a stepwise manner according to inputted upper bits D[7 to 5]. The R-2R resistance ladder DA converter is coupled to the segment type DA converter in series between the power source voltage VDD and a ground voltage GND, and outputs an output voltage Vout changing in a stepwise manner. The R-2R resistance ladder DA converter changes the output voltage Vout by raising or lowering a reference voltage Vref according to the lower bits D[4 to 0] and the current signal from the segment type DA converter.
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