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热词
    • 2. 发明公开
    • A/D converter
    • A / D-Wandler
    • EP1239593A2
    • 2002-09-11
    • EP01309751.4
    • 2001-11-20
    • FUJITSU LIMITED
    • Yoshioka, Masato, c/o Fujitsu LimitedTsukamoto, Sanroku, c/o Fujitsu Microelectronics
    • H03M1/16
    • H03M1/1215H03M1/069H03M1/1004H03M1/1023H03M1/146H03M1/205H03M1/365
    • An A/D converter comprises: a differential amplifier row (2) for amplifying differential voltages between an analog input voltage (VIN) and reference voltages (VRL, VR 1 ,..VR 5 , VRH); a first sample/hold circuit row (3) for sampling/holding the individual differential voltages amplified; a second sample/hold circuit row (4) having a pair of second and third sample/hold circuits connected in parallel to each output of the first sample/hold circuit row (3), thereby performing alternate sampling; a plurality of comparators (5) for determining whether the individual differential voltages held by the first sample/hold circuit row are positive or negative; and an encoder (6) for outputting digital code corresponding to the outputs of the comparators.
    • A / D转换器包括:用于放大模拟输入电压(VIN)和参考电压(VRL,VR1,VR5,VRH)之间的差分电压的差分放大器行(2)。 用于采样/保持放大的各个差分电压的第一采样/保持电路行(3) 具有与第一采样/保持电路行(3)的每个输出并联连接的一对第二和第三采样/保持电路的第二采样/保持电路行(4),从而进行交替采样; 多个比较器(5),用于确定由第一采样/保持电路行保持的各个差分电压是正还是负; 以及用于输出与比较器的输出相对应的数字代码的编码器(6)。