上图为datasheet上面的比价器原理图，红色框内为REF0的几个分压电阻，具体是怎么进行分压计算的，比如我选择VCC=3V输入，经过REF0之后，选择第右边第一个电压、第二个电阻。。。。，对应的分压比例是多少？
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