公开(公告)号：US06147634A

公开(公告)日：2000-11-14

申请号：US211616

申请日：1998-12-15

申请人： Giri N Rangan ,  Mathew A Rybicki

发明人： Giri N Rangan ,  Mathew A Rybicki

IPC分类号： H03M3/00

CPC分类号： H03M3/344 ,  H03M3/50

摘要： A method and apparatus for digital to analog signal conversions with reduced noise include processing that begins by receiving a digital signal and filtering the digital signal to produce a filtered digital signal. The filtering is tuned to attenuate components of the digital signal having frequencies near one-half the sampling rate frequency and to pass other components of the digital signal having frequencies away from one-half the sampling rate frequency. The filtered signals are then converted to analog signals based on a clock signal having a sampling rate frequency and a voltage reference.

摘要翻译： 用于具有降低噪声的数模转换信号转换的方法和装置包括通过接收数字信号并对数字信号进行滤波以产生经滤波的数字信号开始的处理。 滤波被调谐以衰减具有接近采样率频率的一半的频率的数字信号的分量，并且使得数字信号的其他分量具有远离采样频率的一半的频率。 然后，滤波后的信号基于具有采样率频率和电压基准的时钟信号转换成模拟信号。