发明授权
- 专利标题： Microphone amplifier
- 专利标题（中）： 麦克风放大器
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申请号： US13330285申请日： 2011-12-19
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公开(公告)号： US08897460B2公开(公告)日： 2014-11-25
- 发明人: Thomas Froehlich , Wolfgang Duenser
- 申请人： Thomas Froehlich , Wolfgang Duenser
- 申请人地址： AT Unterpremstätten
- 专利权人： AMS AG
- 当前专利权人： AMS AG
- 当前专利权人地址： AT Unterpremstätten
- 代理机构： McDermott Will & Emery LLP
- 优先权： DE102010054895 20101217
- 主分类号： H04R3/00
- IPC分类号： H04R3/00 ; H03F1/52 ; H03F3/187
摘要：
A microphone amplifier comprises an input terminal (E100) for applying an input signal (IN), an output terminal (A100a) for outputting an output signal (OUT), and an additional output terminal (A100b) for outputting an additional output signal (VBIAS). The microphone amplifier also contains an amplifying circuit (10) for generating the output signal (OUT) by amplifying the input signal (IN), wherein the amplifying circuit (10) is connected between the input terminal (E100) and the output terminal (A100a), and a voltage generator (30) for generating the additional output signal (VBIAS). A supply voltage terminal (V30) of the voltage generator (30) is connected to the output terminal (A100a) of the microphone amplifier. Since the amplifying circuit (10) makes available a supply voltage (V) for the voltage generator (30), the microphone amplifier can be operated without a separate supply voltage terminal.
公开/授权文献
- US20120155675A1 Microphone Amplifier 公开/授权日：2012-06-21
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