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    Serial parallel type A/D converter
    2.
    发明公开
    Serial parallel type A/D converter 失效
    Seriell-Paralell Analog / Digitalkonverter。

    公开(公告)号：EP0414389A1

    公开(公告)日：1991-02-27

    申请号：EP90308380.6

    申请日：1990-07-31

    申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

    发明人： Matsuzawa, Akira ,  Kanoh, Masaaki ,  Tada, Shoichiro

    IPC分类号： H03M1/36 ,  H03M1/46

    CPC分类号： H03M1/069 ,  H03M1/146 ,  H03M1/362

    摘要： A plurality of different reference voltages are generated. A set of differential conversion circuits has first input terminals subjected in common to an analog input signal and second input terminals subjected to the respective reference voltages, and converts differences between voltages at the first and second input terminals into differential output voltages. A first A/D conversion circuit compares the analog input signal with the reference voltages to perform a higher-order A/D conversion of the input analog signal. At least two of the differential output voltages are selected. An interval between the selected differential output voltages is divided, and divided voltages are generated in accordance with the division. A second A/D conversion circuit compares the divided voltages to perform a lower-order A/D conversion of the analog input signal.

    摘要翻译： 产生多个不同的参考电压。 一组差分转换电路具有共同受到模拟输入信号的第一输入端和受到各个参考电压的第二输入端，并且将第一和第二输入端的电压之间的差异转换为差分输出电压。 第一A / D转换电路将模拟输入信号与参考电压进行比较，以执行输入模拟信号的高阶A / D转换。 选择差分输出电压中的至少两个。 所选择的差分输出电压之间的间隔被分割，并且根据分割产生分压。 第二A / D转换电路比较分压以执行模拟输入信号的低阶A / D转换。