| 摘要 |
PROBLEM TO BE SOLVED: To provide a digital power amplifier which has a small circuit configuration and can respond even to a new source of signals. SOLUTION: Selectors 23a-23f are imputted with a plurality of series of input signals, and then selectively output signals to a plurality of digital power amplifiers 24a-24f based on the series. Due to this structure, a plurality of series of input signals can be distributed arbitrarily into a plurality of digital power amplifiers 24a-24f, and both a common processing for all the series of input signals and a separate processing for each series of input signals can be conducted collectively in a preliminary stage. A processing circuit for processing the input signals in each of the digital power amplifier 24a-24f can be smaller in size than in an analog power amplifier. Alternatively, the separate processing for each series of input signals may be conducted, using each of the digital power amplifiers 24a-24f. |
