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SUCCESSIVE APPROXIMATION ANALOG TO DIGITAL CONVERTER WITH A DIRECT SWITCHING TECHNIQUE FOR CAPACITOR ARRAY THROUGH COMPARATOR OUTPUT AND METHOD THEREOF
SUCCESSIVE APPROXIMATION ANALOG TO DIGITAL CONVERTER WITH A DIRECT SWITCHING TECHNIQUE FOR CAPACITOR ARRAY THROUGH COMPARATOR OUTPUT AND METHOD THEREOF
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机译:通过电容器输出通过比较器输出直接切换技术的数字转换器的成功逼近模拟及其方法
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摘要
A method for a successive approximation register ADC which includes at least one capacitor array and a plurality of switches is provided, in which the capacitors of the capacitor array are one-to-one corresponding to the switches. The method includes the following steps: firstly, at least one multiplexer is configured. Then, a first comparison voltage is outputted based on the terminal voltages on the terminals of the capacitor array, and a comparison result is outputted according to the first comparison voltage and a second comparison voltage. Afterwards, a sequence of comparisons is controlled based on the comparison result to enter into a sequence of comparison phases. Finally, the switches are orderly selected, by the multiplexer based on the comparison phases, to switch directly according to the comparison result.
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