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1.发明授权Audio amplifier performance while maintaining USB compliance and power down protection 有权音频放大器性能同时保持USB符合性和掉电保护公开(公告)号：US09246445B2
公开(公告)日：2016-01-26
申请号：US14190491
申请日：2014-02-26
发明人： Julie Lynn Stultz , Earl Schreyer
CPC分类号： H03F3/181 , H03F1/52 , H03F2200/03 , H03F2200/414
摘要： An apparatus comprises a first audio amplifier circuit configured to provide an analog audio signal and an analog switch circuit including a first input configured to receive the analog audio signal, a second input configured to receive a first digital data signal, and a first output configured to provide one of the digital data signal or the analog audio signal. The apparatus also includes a first feedback circuit coupled to the first audio amplifier circuit and the analog switch circuit output, the feedback circuit configured to bias the first audio amplifier circuit.
摘要翻译： 一种装置包括配置成提供模拟音频信号的第一音频放大器电路和包括被配置为接收模拟音频信号的第一输入的模拟开关电路，被配置为接收第一数字数据信号的第二输入和被配置为 提供数字数据信号或模拟音频信号之一。 该装置还包括耦合到第一音频放大器电路和模拟开关电路输出的第一反馈电路，该反馈电路被配置为偏置第一音频放大器电路。
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公开(公告)号：US20150222982A1
公开(公告)日：2015-08-06
申请号：US14689247
申请日：2015-04-17
CPC分类号： H04R29/001 , H04M1/05 , H04M1/6058 , H04M1/72527 , H04R1/06 , H04R1/1091 , H04R3/00 , H04R5/04
摘要： This document discusses, among other things, systems and methods to reduce power use of an accessory detection device. The accessory detection device can be configured to be coupled to a mobile device having an audio jack configured to be coupled to a mobile device accessory having a send/end key. In an example, the accessory detection device can include a comparator and a switch. The comparator can be configured to receive mobile device accessory information from the mobile device accessory and to determine activation of the send/end key using the received mobile device accessory information. The switch can be configured to receive connection information indicative of mobile device accessory connection to the audio jack and to isolate a reference input of the comparator from a supply voltage using the connection information, for example, to reduce leakage current.
摘要翻译： 本文件尤其讨论了减少附件检测设备的功率使用的系统和方法。 附件检测装置可以被配置为耦合到具有被配置为耦合到具有发送/结束密钥的移动设备附件的音频插孔的移动设备。 在一个示例中，附件检测装置可以包括比较器和开关。 比较器可以被配置为从移动设备附件接收移动设备附件信息，并且使用接收到的移动设备附件信息来确定发送/结束密钥的激活。 该开关可以被配置为接收指示移动设备附件连接到音频插孔的连接信息，并使用连接信息将比较器的参考输入与电源电压隔离，以减少漏电流。
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公开(公告)号：US09294080B2
公开(公告)日：2016-03-22
申请号：US14228614
申请日：2014-03-28
发明人： Tyler Daigle , Julie Lynn Stultz
CPC分类号： H03K17/063 , H02J7/0029 , H03K2217/0018 , H03K2217/0054
摘要： An apparatus comprises at least one transistor configured as analog switch, a well biasing circuit configured to provide a dynamic electrical bias to a bulk region of the at least one transistor, and a comparator circuit in electrical communication with the well biasing circuit and the transistor. The comparator circuit is configured to detect a first operating condition of the transistor and a second operating condition of the transistor. The well biasing circuit is configured to apply a first electrical bias to the bulk region of a transistor when the first operating condition is detected and apply a second electrical bias to the bulk region of the transistor when the second operating condition is detected, and wherein the comparator is configured to apply hysteresis to detection of the first and second operating conditions.
摘要翻译： 一种装置包括配置为模拟开关的至少一个晶体管，阱偏置电路，其被配置为向至少一个晶体管的体区提供动态电偏置，以及与阱偏置电路和晶体管电连通的比较器电路。 比较器电路被配置为检测晶体管的第一工作状态和晶体管的第二工作状态。 阱偏置电路被配置为当检测到第一操作条件时将第一电偏压施加到晶体管的主体区域，并且当检测到第二操作条件时将第二电偏压施加到晶体管的主体区域，并且其中， 比较器被配置为对第一和第二操作条件的检测应用滞后。
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公开(公告)号：US20140098297A1
公开(公告)日：2014-04-10
申请号：US14103013
申请日：2013-12-11
IPC分类号： H03K17/16
CPC分类号： H03K17/16 , H03K17/005 , H03K17/30 , Y10T307/76
摘要： A switch can be configured to receive a first signal at a first input and provide an output signal at an output, depending on a state of the switch. A switch state change can be delayed until an indication of a requested switch state different than a current switch state is received and the first signal reaches a threshold.
摘要翻译： 开关可以被配置为在第一输入处接收第一信号，并且根据开关的状态在输出端提供输出信号。 可以延迟开关状态改变，直到接收到与当前开关状态不同的请求开关状态的指示，并且第一信号达到阈值。
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公开(公告)号：US20160285446A1
公开(公告)日：2016-09-29
申请号：US15079304
申请日：2016-03-24
IPC分类号： H03K17/08 , H03K17/687 , H03K17/693 , H02M3/07
CPC分类号： H03K17/693 , H03K17/08122 , H03K2217/0018 , H03K2217/0054
摘要： Systems and methods are disclosed, including a protection multiplexer circuit configured to receive a control signal and a reference voltage, to provide the reference voltage at an output when the control signal is in a first state, and to isolate the reference voltage from the output when the control signal is in a second state. The protection multiplexer circuit includes cascaded first and second transistors, wherein the first transistor is a native transistor. Control inputs of the first and second transistors are configured to receive the control signal, a first terminal of the first transistor is configured to receive the reference voltage, and the first terminal of the second transistor is coupled to the output. Methods of operation are disclosed, and other embodiments.
摘要翻译： 公开了系统和方法，包括保护多路复用器电路，其被配置为接收控制信号和参考电压，以在控制信号处于第一状态时在输出端提供参考电压，并且将参考电压与输出隔离 控制信号处于第二状态。 保护多路复用器电路包括级联的第一和第二晶体管，其中第一晶体管是天然晶体管。 第一和第二晶体管的控制输入被配置为接收控制信号，第一晶体管的第一端被配置为接收参考电压，并且第二晶体管的第一端耦合到输出端。 公开了操作方法和其他实施例。
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公开(公告)号：US20140323184A1
公开(公告)日：2014-10-30
申请号：US14228614
申请日：2014-03-28
发明人： Tyler Daigle , Julie Lynn Stultz
CPC分类号： H03K17/063 , H02J7/0029 , H03K2217/0018 , H03K2217/0054
摘要： An apparatus comprises at least one transistor configured as analog switch, a well biasing circuit configured to provide a dynamic electrical bias to a bulk region of the at least one transistor, and a comparator circuit in electrical communication with the well biasing circuit and the transistor. The comparator circuit is configured to detect a first operating condition of the transistor and a second operating condition of the transistor. The well biasing circuit is configured to apply a first electrical bias to the bulk region of a transistor when the first operating condition is detected and apply a second electrical bias to the bulk region of the transistor when the second operating condition is detected, and wherein the comparator is configured to apply hysteresis to detection of the first and second operating conditions.
摘要翻译： 一种装置包括配置为模拟开关的至少一个晶体管，阱偏置电路，其被配置为向至少一个晶体管的体区提供动态电偏置，以及与阱偏置电路和晶体管电连通的比较器电路。 比较器电路被配置为检测晶体管的第一工作状态和晶体管的第二工作状态。 阱偏置电路被配置为当检测到第一操作条件时将第一电偏压施加到晶体管的主体区域，并且当检测到第二操作条件时将第二电偏压施加到晶体管的主体区域，并且其中， 比较器被配置为对第一和第二操作条件的检测应用滞后。
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公开(公告)号：US09838004B2
公开(公告)日：2017-12-05
申请号：US15079304
申请日：2016-03-24
IPC分类号： H03K17/00 , H03K17/693 , H03K17/0812
CPC分类号： H03K17/693 , H03K17/08122 , H03K2217/0018 , H03K2217/0054
摘要： Systems and methods are disclosed, including a protection multiplexer circuit configured to receive a control signal and a reference voltage, to provide the reference voltage at an output when the control signal is in a first state, and to isolate the reference voltage from the output when the control signal is in a second state. The protection multiplexer circuit includes cascaded first and second transistors, wherein the first transistor is a native transistor. Control inputs of the first and second transistors are configured to receive the control signal, a first terminal of the first transistor is configured to receive the reference voltage, and the first terminal of the second transistor is coupled to the output. Methods of operation are disclosed, and other embodiments.
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公开(公告)号：US09263431B2
公开(公告)日：2016-02-16
申请号：US13862008
申请日：2013-04-12
发明人： Sam Zheng , Gary Sun , Steven M. Leibiger , Tyler Daigle , Julie Lynn Stultz
CPC分类号： H01L27/0266 , H01L27/0255
摘要： In certain examples an integrated circuit protection circuit can include a circuit module, and an isolation device. The isolation device can be configured to couple a ground node of the circuit module to a power ground in an on state, and to isolate the ground node of the circuit module from the power ground in an off state, wherein the isolation module is configured to enter the off state when the IC receives a negative input voltage.
摘要翻译： 在某些示例中，集成电路保护电路可以包括电路模块和隔离装置。 隔离装置可以被配置为将电路模块的接地节点耦合到处于导通状态的电源地，并将电路模块的接地节点与电源地隔离在关闭状态，其中隔离模块被配置为 当IC接收到负输入电压时，进入关闭状态。
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公开(公告)号：US08779962B2
公开(公告)日：2014-07-15
申请号：US13860203
申请日：2013-04-10
IPC分类号： H03M1/12
CPC分类号： H03M1/34 , H03K17/163 , H03K2217/0054 , H03M1/12
摘要： This document discusses, among other things, apparatus and methods including an analog-to-digital controller (ADC) configured to receive an enable signal and to provide an ADC output signal to control logic, wherein the control logic is configured to provide a control voltage to a control input of a switch. In an example, the control voltage includes the ADC output signal when the ADC output signal is below a first threshold or above a second threshold. In certain examples, the control logic is configured to transition the control voltage from the first threshold to the second threshold when the ADC output signal is between the first and second thresholds.
摘要翻译： 本文件尤其涉及包括被配置为接收使能信号并向控制逻辑提供ADC输出信号的模拟 - 数字控制器（ADC）的装置和方法，其中所述控制逻辑被配置为提供控制电压 到开关的控制输入。 在一个示例中，当ADC输出信号低于第一阈值或高于第二阈值时，控制电压包括ADC输出信号。 在某些示例中，当ADC输出信号在第一和第二阈值之间时，控制逻辑被配置为将控制电压从第一阈值转换到第二阈值。
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公开(公告)号：US20140132311A1
公开(公告)日：2014-05-15
申请号：US14074334
申请日：2013-11-07
发明人： Julie Lynn Stultz , Tyler Daigle
IPC分类号： H03K3/012
CPC分类号： H03K3/012
摘要： This application discusses, among other things, apparatus and methods for driving the bulk of a high-voltage transistor using transistors having gates with low-voltage ratings. In an example, a bulk driver can include an output configured to couple to bulk of a high-voltage transistor, a pick circuit configured to couple the output to an input voltage at an input terminal of the high-voltage transistor or an output voltage at the output terminal of the high-voltage transistor when the high-voltage transistor is in a high impedance state, and a bypass circuit configured to couple the output of the bulk driver to the output voltage when the high-voltage transistor is in a low impedance state.
摘要翻译： 除了别的以外，本申请还讨论了使用具有低电压额定值的栅极的晶体管驱动大电压晶体管的装置和方法。 在一个示例中，批量驱动器可以包括被配置为耦合到高压晶体管的大部分的输出，拾取电路，其被配置为将输出耦合到高压晶体管的输入端处的输入电压或输出电压 当高电压晶体管处于高阻抗状态时，高压晶体管的输出端子和配置成当高压晶体管处于低阻抗时将体驱动器的输出耦合到输出电压的旁路电路 州。
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