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    • 8. 发明授权
    • Integrated circuit device and electronic instrument
    • 集成电路器件和电子仪器
    • US07808412B2
    • 2010-10-05
    • US12389916
    • 2009-02-20
    • Akihiro FukuzawaSatoru ItoNobuyuki Imai
    • Akihiro FukuzawaSatoru ItoNobuyuki Imai
    • H03M1/00
    • H03G5/24H03H19/004
    • An integrated circuit device includes an amplifier circuit that receives an input signal and performs an offset adjustment corresponding to a DC offset of the input signal and a gain adjustment corresponding to an amplitude of the input signal, a filter that is provided in a subsequent stage of the amplifier circuit, a cut-off frequency of the filter being variably set corresponding to a frequency band of the input signal, an A/D converter that is provided in a subsequent stage of the filter and performs an A/D conversion process on a signal amplified by the amplifier circuit, and a control circuit that sets an offset adjustment of the amplifier circuit, a gain adjustment of the amplifier circuit, and the cut-off frequency of the filter.
    • 集成电路装置包括:放大器电路,其接收输入信号并执行与输入信号的DC偏移相对应的偏移调整和对应于输入信号的幅度的增益调整;滤波器,其被设置在 所述放大器电路,对应于所述输入信号的频带可变地设置所述滤波器的截止频率; A / D转换器,其设置在所述滤波器的后续级中,并对所述滤波器进行A / D转换处理 由放大器电路放大的信号,以及设置放大器电路的偏移调整,放大器电路的增益调整和滤波器的截止频率的控制电路。