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公开(公告)号:US09571046B2
公开(公告)日:2017-02-14
申请号:US13994677
申请日:2011-12-07
申请人: Thomas Fröhlich , Wolfgang Dünser
发明人: Thomas Fröhlich , Wolfgang Dünser
CPC分类号: H03F3/185 , H03F3/70 , H03F2200/03 , H03F2200/48 , H04R1/04 , H04R3/00 , H04R19/016
摘要: The invention relates to an amplifier circuit (10a, 10b) for a two-wire interface, comprising a first current path (1), comprising a voltage-controlled current source (T1) having a gate (GT1), which is connected to an input connection (E1) of the amplifier circuit. A second current path (2) of the amplifier circuit comprises a voltage-controlled current source (T2), which is connected in series with the second resistor (R2). The first resistor (R1) and a parallel connection of the first and second current paths (1, 2) are connected in series between an output connection (A) and a reference voltage connection (B) of the amplifier circuit. The amplifier circuit (10a, 10b) makes it possible to adjust the gain and to provide a supply voltage and a useful signal over a common conducting track (L).
摘要翻译: 本发明涉及一种用于双线接口的放大器电路(10a,10b),包括一个第一电流通路(1),它包括一个具有栅极(GT1)的压控电流源(T1),它连接到一个 输入连接(E1)。 放大器电路的第二电流通路(2)包括与第二电阻器(R2)串联连接的压控电流源(T2)。 第一电阻器(R1)和第一和第二电流路径(1,2)的并联连接在放大器电路的输出连接(A)和参考电压连接(B)之间串联连接。 放大器电路(10a,10b)使得可以调节增益并且在公共导电轨道(L)上提供电源电压和有用信号。
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公开(公告)号:US20140010386A1
公开(公告)日:2014-01-09
申请号:US13994677
申请日:2011-12-07
申请人: Thomas Fröhlich , Wolfgang Dünser
发明人: Thomas Fröhlich , Wolfgang Dünser
IPC分类号: H03F3/185
CPC分类号: H03F3/185 , H03F3/70 , H03F2200/03 , H03F2200/48 , H04R1/04 , H04R3/00 , H04R19/016
摘要: The invention relates to an amplifier circuit (10a, 10b) for a two-wire interface, comprising a first current path (1), comprising a voltage-controlled current source (T1) having a gate (GT1), which is connected to an input connection (E1) of the amplifier circuit. A second current path (2) of the amplifier circuit comprises a voltage-controlled current source (T2), which is connected in series with the second resistor (R2). The first resistor (R1) and a parallel connection of the first and second current paths (1, 2) are connected in series between an output connection (A) and a reference voltage connection (B) of the amplifier circuit. The amplifier circuit (10a, 10b) makes it possible to adjust the gain and to provide a supply voltage and a useful signal over a common conducting track (L).
摘要翻译: 本发明涉及一种用于双线接口的放大器电路(10a,10b),包括一个第一电流通路(1),它包括一个具有栅极(GT1)的压控电流源(T1),它连接到一个 输入连接(E1)。 放大器电路的第二电流通路(2)包括与第二电阻器(R2)串联连接的压控电流源(T2)。 第一电阻器(R1)和第一和第二电流路径(1,2)的并联连接在放大器电路的输出连接(A)和参考电压连接(B)之间串联连接。 放大器电路(10a,10b)使得可以调节增益并且在公共导电轨道(L)上提供电源电压和有用信号。
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公开(公告)号:US09042578B2
公开(公告)日:2015-05-26
申请号:US13607599
申请日:2012-09-07
申请人: Wolfgang Dünser
发明人: Wolfgang Dünser
CPC分类号: H03F3/187 , H03F1/52 , H03F3/45475 , H03F2200/426 , H03F2203/45138 , H04R19/005 , H04R19/04
摘要: A microphone amplifier comprises a microphone terminal for connecting a microphone, particularly a MEMS microphone, and an amplifier circuit with an amplifier input that is connected to the microphone terminal, and with an amplifier output that is connected to an output of the microphone amplifier. The amplifier circuit is designed to amplify an input signal present at the amplifier input in order to generate an output signal at the amplifier output. The microphone amplifier further comprises an overload circuit that is designed to detect an overload state within the amplifier circuit and to connect the amplifier input via a switching element, in particular with a low impedance, to a reference potential terminal if the overload state is detected for more than a predetermined time span.
摘要翻译: 麦克风放大器包括用于连接麦克风的麦克风端子,特别是MEMS麦克风,以及具有连接到麦克风端子的放大器输入的放大器电路,以及连接到麦克风放大器的输出的放大器输出。 放大器电路被设计为放大存在于放大器输入端的输入信号,以便在放大器输出端产生输出信号。 麦克风放大器还包括过载电路,其被设计为检测放大器电路内的过载状态,并且如果检测到过载状态,则通过开关元件(特别是低阻抗)将放大器输入连接到参考电位端子 超过预定的时间跨度。
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公开(公告)号:US20130064397A1
公开(公告)日:2013-03-14
申请号:US13607599
申请日:2012-09-07
申请人: Wolfgang Dünser
发明人: Wolfgang Dünser
IPC分类号: H03F99/00
CPC分类号: H03F3/187 , H03F1/52 , H03F3/45475 , H03F2200/426 , H03F2203/45138 , H04R19/005 , H04R19/04
摘要: A microphone amplifier comprises a microphone terminal for connecting a microphone, particularly a MEMS microphone, and an amplifier circuit with an amplifier input that is connected to the microphone terminal, and with an amplifier output that is connected to an output of the microphone amplifier. The amplifier circuit is designed to amplify an input signal present at the amplifier input in order to generate an output signal at the amplifier output. The microphone amplifier further comprises an overload circuit that is designed to detect an overload state within the amplifier circuit and to connect the amplifier input via a switching element, in particular with a low impedance, to a reference potential terminal if the overload state is detected for more than a predetermined time span.
摘要翻译: 麦克风放大器包括用于连接麦克风的麦克风端子,特别是MEMS麦克风,以及具有连接到麦克风端子的放大器输入的放大器电路,以及连接到麦克风放大器的输出的放大器输出。 放大器电路被设计为放大存在于放大器输入端的输入信号,以便在放大器输出端产生输出信号。 麦克风放大器还包括过载电路,其被设计为检测放大器电路内的过载状态,并且如果检测到过载状态,则通过开关元件(特别是低阻抗)将放大器输入连接到参考电位端子 超过预定的时间跨度。
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