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    • 97. 发明授权
    • Wideband data converter with adaptive segment shuffling
    • 具有自适应段混洗的宽带数据转换器
    • US06331834B1
    • 2001-12-18
    • US09675039
    • 2000-09-28
    • Paul F. Smith
    • Paul F. Smith
    • H03M112
    • H03M3/338H03M3/424H03M3/502
    • A signal converter circuit (10) includes an analog to digital converter (14) for converting an input analog signal into a digital signal. The circuit (10) also includes a DAC 16 with segment shuffler for shuffling the digital signal segments output by the analog to digital converter (14) to improve linearity of the converted digital signal. In addition, a shuffle controller (24) connected to the DAC (16) is for adaptively turning the shuffler of DAC (16) on and off based on a parameter, such as amplitude, of the input analog signal. The adaptive segment shuffling enables a lower performance data converter to be used in devices requiring a high dynamic range for converting signals over a wide range of signal amplitudes.
    • 信号转换器电路(10)包括用于将输入的模拟信号转换为数字信号的模数转换器(14)。 电路(10)还包括具有分段洗牌器的DAC 16,用于混合由模数转换器(14)输出的数字信号段,以改善经转换的数字信号的线性。 另外,连接到DAC(16)的洗牌控制器(24)用于基于输入模拟信号的参数(诸如振幅)自适应地使DAC(16)的洗牌器开启和关闭。 自适应段混洗使得能够在需要高动态范围的设备中使用较低性能的数据转换器来在宽范围的信号幅度上转换信号。