发明名称 Analog-to-digital converter having an excellent signal-to-noise ratio for small signals.
摘要 <p>An analog-to-digital converter includes an analog-to-digital converting circuit having at least an analog signal input terminal, an adder having a first input connected to the analog signal input terminal and a second input, and a comparator having an input coupled to receive an output of the adder and operating to generate a digital signal at a given sampling frequency. This digital signal is applied to the second input of the adder. There is further provided a a noise generator including an one-bit white noise generator connected to receive the digital signal outputted from the comparator for generating a one-bit white noise signal, and a circuit coupled to the white noise generator for outputting a signal indicative of a difference between values of two white noise signals at two continuous sampling points. This difference signal is added to the input of the comparator.</p>
申请公布号 EP0308982(A2) 申请公布日期 1989.03.29
申请号 EP19880115804 申请日期 1988.09.26
申请人 NEC CORPORATION 发明人 YUKAWA, AKIRA C/O NEC CORPORATION
分类号 H03M1/56;H03M3/02 主分类号 H03M1/56
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