发明授权
- 专利标题: Digital power amplifier and digital/analog converter
- 专利标题(中): 数字功率放大器和数字/模拟转换器
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申请号: US10210769申请日: 2002-08-01
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公开(公告)号: US06812785B2公开(公告)日: 2004-11-02
- 发明人: Toshihiko Masuda , Takashi Shima
- 申请人: Toshihiko Masuda , Takashi Shima
- 优先权: JPP2001-240911 20010808
- 主分类号: H03F338
- IPC分类号: H03F338
摘要:
A digital power amplifier includes a pulse width modulator for converting an input signal into a pulse width modulated signal according to a signal level of the input signal; an output stage, switching thereof being controlled by the pulse width modulated signal generated by the pulse width modulator; a pulse width modulation ratio detector for detecting a pulse width modulation ratio of the pulse width modulated signal generated by the pulse width modulator; and a control unit for disabling the switching operation of the output stage. The control unit disables the switching operation of the output stage when the pulse width modulation ratio detector detects that the pulse width modulation ratio is 50%.
公开/授权文献
- US20030038674A1 Digital power amplifier and digital/analog converter 公开/授权日:2003-02-27