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    • 10. 发明专利
    • Slice circuit
    • SLICE电路
    • JP2004064196A
    • 2004-02-26
    • JP2002216384
    • 2002-07-25
    • Renesas Technology Corp株式会社ルネサステクノロジ
    • KOBAYASHI KEIJISATO HISAYASU
    • H03K5/003H03K5/08H04L25/03H04L25/06H04L27/14H04L27/148H04L27/152
    • H03K5/082H03K5/003H04L25/061H04L27/142
    • PROBLEM TO BE SOLVED: To provide a slice circuit capable of accurately converting an input analog signal into a digital signal even when the input signal includes a drift of fast changing DC offset. SOLUTION: The slice circuit 90 includes: a DC component adjustment circuit 92; an integrator 93; an LPF 94; and a comparator 95. The DC component adjustment circuit 92 adjusts only a DC component of the input signal received from an input terminal 91 so that the result has a DC component comprising a prescribed voltage level. The integrator 93 amplifies only high frequency components of a prescribed frequency or over in the input signal received from the DC component adjustment circuit 92. The LPF 94 detects an average voltage of the input signal received from the DC component adjustment circuit 92. The comparator 95 compares voltage of an output signal from the integrator 93 with voltage of an output signal from the LPF 94 and outputs a digital signal with a logic level depending on the result of comparison to an output terminal 96. COPYRIGHT: (C)2004,JPO
    • 要解决的问题:即使当输入信号包括快速变化的DC偏移的漂移时,提供能够将输入的模拟信号精确地转换成数字信号的片电路。 解决方案:片电路90包括:直流分量调节电路92; 积分器93; 一个LPF 94; 和比较器95.直流分量调整电路92仅调整从输入端子91接收的输入信号的直流分量,使得结果具有包括规定电压电平的直流分量。 积分器93仅放大从DC分量调整电路92接收的输入信号中的规定频率以上的高频成分。LPF 94检测从直流分量调整电路92接收的输入信号的平均电压。比较器95 将来自积分器93的输出信号的电压与来自LPF94的输出信号的电压进行比较,并根据与输出端子96的比较结果输出具有逻辑电平的数字信号。(C)2004 ,JPO