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Residual signal generating circuit, successive approximation ad converter, pipelined ad converter, and radio receiver
Residual signal generating circuit, successive approximation ad converter, pipelined ad converter, and radio receiver
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机译:残留信号生成电路,逐次逼近型广告转换器,流水线型广告转换器和无线电接收机
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摘要
There is provided with a residual signal generating circuit in which the capacitive DA converter generates a first difference signal with respect to an input signal based on a criterion voltage, the criterion voltage being indicative of an input range of the input signal, the reference voltage generating circuit divides the criterion voltage to obtain at least one partial voltage signal, the residual signal generating section generates 2N−1 first residual signal according to a difference between the first difference signal and 2N−1−1 first reference signal, the 2N−1−1 first reference signal being 2N−1−1 partial voltage signal among said at least one partial voltage signal generated by the reference voltage generating circuit, the comparator compares the 2N−1 first residual signal with a fixed voltage to obtain 2N−1 first comparison signal each indicative of a logical value, and the decoder decodes the 2N−1 first comparison signal to obtain first data of N bits.
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机译:设有残差信号发生电路,在该残差信号发生电路中,电容性DA转换器基于基准电压产生相对于输入信号的第一差分信号,该基准电压表示该输入信号的输入范围,基准电压产生电路对基准电压进行分压以获得至少一个分电压信号,残差信号产生部分根据第一差信号与2 N-的差产生2 N Sup> -1个第一残差信号1 Sup> -1第一参考信号,2 N-1 Sup> -1第一参考信号为所述至少一个中的2 N-1 Sup> -1分电压信号由参考电压产生电路产生的部分电压信号,比较器将2 N Sup> -1个第一残余信号与固定电压进行比较,以获得2 N Sup> -1个第一比较信号指示逻辑值,然后解码器解码2 N Sup> -1 fir st比较信号以获得N位的第一数据。
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