| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce spurious tones in an output signal of a data converter system. <P>SOLUTION: The data converter system confines an input signal to a specified frequency band so that the converted input signal straddles or avoids spurious tones by performing over-sampling. The spurious tones may be filtered away, thereby providing an output signal having a cleaner spurious free dynamic range (SFDR) than that of a conventional data converter. For example, an interleaved data converter system converts an input signal which is confined to a second Nyquist area of one of a plurality of interleaved data converters into an interleaved signal, and then filters the interleaved signal with a filter having a pass band which transmits the converted input signal frequencies and a stop band which attenuates the spurious tones. <P>COPYRIGHT: (C)2013,JPO&INPIT |
