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    • 9. 发明授权
    • Successive approximation analog-to-digital converter
    • 逐次近似模数转换器
    • US08274420B2
    • 2012-09-25
    • US12970861
    • 2010-12-16
    • Hyun Kyu YuSeon Ho HanYoung Hwa KimSeong Hwan Cho
    • Hyun Kyu YuSeon Ho HanYoung Hwa KimSeong Hwan Cho
    • H03M1/38
    • H03M1/46H03M1/827
    • There is provided a successive approximation analog-to-digital converter including only minimal capacitors to perform an analog-to-digital conversion operation, thereby making it possible to have very strong process change resistance characteristics while having reduced capacitance and circuit area. The successive approximation analog-to-digital converter may include a reference current supplying unit that supplies a reference current; a signal storage unit that stores a reference signal generated by charging the reference current and an input signal input from the outside; a comparing unit that compares the reference signal and the input signal; and a controller that controls the reference current supplying unit while generating the digital output signal based on the comparison result of the comparing unit to change the supply amount of the reference current supplied to the signal storage unit in proportion to the binary code.
    • 提供了仅包括最小电容器以执行模数转换操作的逐次逼近模数转换器,从而使得可以具有非常强的工艺变化电阻特性,同时具有减小的电容和电路面积。 逐次逼近模数转换器可以包括提供参考电流的参考电流提供单元; 信号存储单元,存储通过对参考电流进行充电而产生的参考信号和从外部输入的输入信号; 比较单元,其比较所述参考信号和所述输入信号; 以及控制器,其基于所述比较单元的比较结果来控制所述参考电流供给单元,同时根据所述二进制码来改变提供给所述信号存储单元的参考电流的供给量。