专利汇可以提供Analog-digital converter专利检索,专利查询,专利分析的服务。并且PURPOSE: To secure the high-accuracy A-D conversion by suppressing the variation of the output current of the amplifier in the comparator group of the multi-value feedback type.
CONSTITUTION: Current source I
3 is connected to both ends of division resistance R which obtains the comparison reference voltage for comparator group containing two units of current source I
2 and I
3 to perform the comparison with the analog signals via the current switch circuit consisting of transistor Q
1 , Q
2 and others. At the same time, current source I
2 is connected to one end of resistance R. Then current source I
2 and I
3 are formed in order to satisfy the fixed conditions which are determined by resistance R and the difference between the upper and lower limit reference voltage of the 1at and 2nd decision. As a result, the output current becomes identical between output step amplifier AMP1 and AMP2 for upper limit voltage generator circuit UVG and lower limit voltage generator circuit DVG, and at the same time no output current exists at the 1st and 2nd decision time each.
COPYRIGHT: (C)1979,JPO&Japio,下面是Analog-digital converter专利的具体信息内容。
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