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公开(公告)号：US20230176110A1
公开(公告)日：2023-06-08
申请号：US17904935
申请日：2021-02-24
申请人： Analog Devices, Inc.
CPC分类号： G01R31/2834 , H03F3/16 , H03F1/523 , H03F2200/441
摘要： A clamp circuit comprises an output transistor and a replica transistor coupled as a current minor pair, wherein the replica transistor is scaled in size to the output transistor by a size ratio; a first current source configured to set a current in the replica transistor, wherein the output current is set at a clamped output current value that is a sum of current of the first current source and a scaled value of the current of the first current source determined according to the size ratio; and a register circuit, wherein a register value stored in the register circuit sets the clamped output current value.
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公开(公告)号：US09966908B1
公开(公告)日：2018-05-08
申请号：US15612826
申请日：2017-06-02
申请人： Xilinx, Inc.
发明人： Declan Carey
CPC分类号： H03F1/52 , H03F3/195 , H03F3/45475 , H03F3/45937 , H03F3/45973 , H03F2200/111 , H03F2200/441 , H03F2200/444 , H03F2200/451 , H03F2203/45101 , H03F2203/45134 , H03F2203/45138 , H03F2203/45512 , H03F2203/45526 , H03F2203/45586 , H03F2203/45678 , H03H11/0422 , H03K19/018528 , H04B1/16 , H04L25/03
摘要： A circuit for implementing a differential input receiver is described. The circuit comprises an input circuit having a first input node and a second input node configured to receive a differential input signal; a first output circuit having a first capacitor coupled between the first input node and a first output node and a second capacitor coupled between the second input node and a second output node, wherein the first output circuit generates an output signal at the first output and the second output when the input signal is in a first frequency range; and a second output circuit comprising an amplifier having a first amplifier input coupled to the first input node and a second amplifier input coupled to the second input node, wherein the second output circuit generates an output signal when the input signal is in a second frequency range which extends lower than the first frequency range. A method of implementing a differential input receiver is also described. The circuits and methods also allow for offset compensation.
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公开(公告)号：US09948247B2
公开(公告)日：2018-04-17
申请号：US15209816
申请日：2016-07-14
申请人： NXP B.V.
发明人： Gian Hoogzaad
CPC分类号： H03F1/52 , H03F3/195 , H03F3/45475 , H03F2200/18 , H03F2200/258 , H03F2200/294 , H03F2200/426 , H03F2200/441 , H03F2200/444 , H03F2200/451 , H03F2200/462 , H03F2200/481 , H03F2200/489 , H03F2200/492 , H03F2200/78
摘要： An RF amplifier comprising an input-transistor having an input-transistor-base terminal, an input-transistor-collector terminal and an input-transistor-emitter terminal; a degeneration-component connected between the input-transistor-emitter terminal and a ground terminal; and a protection-transistor having a protection-transistor-base terminal, a protection-transistor-collector terminal and a protection-transistor-emitter terminal. The input-transistor-base terminal is connected to the protection-transistor-emitter terminal, and the protection-transistor-base terminal is connected to the input-transistor-emitter.
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公开(公告)号：US09608437B2
公开(公告)日：2017-03-28
申请号：US14024833
申请日：2013-09-12
发明人： Ahmed Abdel Monem Youssef , Prasad Srinivasa Siva Gudem , Li-Chung Chang , Ehab Ahmed Sobhy Abdel Ghany
CPC分类号： H02H9/046 , H01L27/0255 , H03F1/223 , H03F1/523 , H03F2200/336 , H03F2200/441 , H03F2200/444
摘要： Techniques for improving electro-static discharge (ESD) performance in integrated circuits (IC's). In an aspect, one or more protective diodes are provided between various nodes of the IC. For example, protective diode(s) may be provided between the drain and gate of an amplifier input transistor, and/or between the drain and ground, etc. In certain exemplary embodiments, the amplifier may be a cascode amplifier. Further aspects for effectively dealing with ESD phenomena are described.
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公开(公告)号：US09559640B2
公开(公告)日：2017-01-31
申请号：US14632646
申请日：2015-02-26
发明人： Ahmed Abdel Monem Youssef , Prasad Srinivasa Siva Gudem , Eugene Robert Worley , Dongling Pan , Li-Chung Chang
CPC分类号： H03F1/523 , H01L27/0255 , H03F1/52 , H03F3/193 , H03F3/211 , H03F3/3016 , H03F3/68 , H03F2200/294 , H03F2200/441 , H03F2200/444 , H03F2200/451 , H03F2200/489 , H03F2203/21106
摘要： A CMOS amplifier including electrostatic discharge (ESD) protection circuits is disclosed. In one embodiment, the CMOS amplifier may include a PMOS transistor, a NMOS transistor, primary protection diodes, and one or more auxiliary protection diodes to limit a voltage difference between terminals of the CMOS amplifier. In some embodiments, the auxiliary protection diodes may limit the voltage difference between an input terminal of the CMOS amplifier and a supply voltage, the input terminal of the CMOS amplifier and ground, and the input terminal and the output terminal of the CMOS amplifier.
摘要翻译： 公开了一种包括静电放电（ESD）保护电路的CMOS放大器。 在一个实施例中，CMOS放大器可以包括PMOS晶体管，NMOS晶体管，初级保护二极管和一个或多个辅助保护二极管，以限制CMOS放大器的端子之间的电压差。 在一些实施例中，辅助保护二极管可以限制CMOS放大器的输入端和电源电压之间的电压差，CMOS放大器的输入端和地，以及CMOS放大器的输入端和输出端。
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公开(公告)号：US20160254789A1
公开(公告)日：2016-09-01
申请号：US14632646
申请日：2015-02-26
发明人： Ahmed Abdel Monem Youssef , Prasad Srinivasa Siva Gudem , Eugene Robert Worley , Dongling Pan , Li-Chung Chang
CPC分类号： H03F1/523 , H01L27/0255 , H03F1/52 , H03F3/193 , H03F3/211 , H03F3/3016 , H03F3/68 , H03F2200/294 , H03F2200/441 , H03F2200/444 , H03F2200/451 , H03F2200/489 , H03F2203/21106
摘要： A CMOS amplifier including electrostatic discharge (ESD) protection circuits is disclosed. In one embodiment, the CMOS amplifier may include a PMOS transistor, a NMOS transistor, primary protection diodes, and one or more auxiliary protection diodes to limit a voltage difference between terminals of the CMOS amplifier. In some embodiments, the auxiliary protection diodes may limit the voltage difference between an input terminal of the CMOS amplifier and a supply voltage, the input terminal of the CMOS amplifier and ground, and the input terminal and the output terminal of the CMOS amplifier.
摘要翻译： 公开了一种包括静电放电（ESD）保护电路的CMOS放大器。 在一个实施例中，CMOS放大器可以包括PMOS晶体管，NMOS晶体管，初级保护二极管和一个或多个辅助保护二极管，以限制CMOS放大器的端子之间的电压差。 在一些实施例中，辅助保护二极管可以限制CMOS放大器的输入端和电源电压之间的电压差，CMOS放大器的输入端和地，以及CMOS放大器的输入端和输出端。
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公开(公告)号：US09154086B2
公开(公告)日：2015-10-06
申请号：US14052244
申请日：2013-10-11
发明人： Lei Huang , Hongtao Lv , Yanfang Li
CPC分类号： H03F1/523 , H03F3/45183 , H03F2200/441
摘要： The disclosure provides an operational amplifier circuit, in which a power supply of an amplifying circuit is coupled to a first voltage clamping circuit, and the first voltage clamping circuit clamps a supply voltage of the amplifying circuit when the supply voltage exceeds a normal-operation allowable voltage of the amplifying circuit. The disclosure also provides a method for implementing the operational amplifier circuit. According to the disclosure, the operational circuit may be avoided from subject to an excessive supply voltage, which may damage devices in the amplifying circuit of the operational amplifier.
摘要翻译： 本公开提供了一种运算放大器电路，其中放大电路的电源耦合到第一钳位电路，并且当电源电压超过正常工作允许值时，第一钳位电路钳位放大电路的电源电压 放大电路的电压。 本公开还提供了一种用于实现运算放大器电路的方法。 根据本公开，可以避免操作电路遭受过大的电源电压，这可能会损坏运算放大器的放大电路中的器件。
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公开(公告)号：US09093972B2
公开(公告)日：2015-07-28
申请号：US13514632
申请日：2010-11-25
申请人： Rolf Reber , Patrick Schuh
发明人： Rolf Reber , Patrick Schuh
CPC分类号： H03G11/04 , H03F1/523 , H03F2200/211 , H03F2200/441 , H03F2200/66
摘要： A limiting circuit has a signal input and a signal output for limiting an output signal that is present at the signal output and that can be fed to a further circuit connected to the output of the limiting circuit. A voltage connection for feeding a bias voltage and a transistor are present, wherein the gate connection of the transistor is connected to the voltage connection by means of a first matching circuit and to the signal input by means of a second matching circuit.
摘要翻译： 限制电路具有信号输入和信号输出，用于限制存在于信号输出端的输出信号，并且可以馈送到连接到限制电路的输出端的另一个电路。 存在用于馈送偏置电压和晶体管的电压连接，其中晶体管的栅极连接通过第一匹配电路连接到电压连接，并通过第二匹配电路连接到信号输入。
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公开(公告)号：US09093961B2
公开(公告)日：2015-07-28
申请号：US14190862
申请日：2014-02-26
发明人： Toshiyuki Tsuzaki
IPC分类号： H03F3/45
CPC分类号： H03F3/45 , H03F1/52 , H03F3/45475 , H03F2200/441 , H03F2203/45101 , H03F2203/45604 , H03F2203/45616
摘要： There is provided an operational amplifier capable of detecting that an input terminal has been open circuited without restricting the voltage range of an input signal. The operational amplifier includes a first comparator which detects that an inverting input terminal of an operational amplifier has been open circuited, a second comparator which detects that a non-inverting input terminal of the operational amplifier has been open circuited, a first resistor and a first switch which are controlled by output signals of the first comparator and the second comparator and which are connected in series between the non-inverting input terminal and a ground terminal of the operational amplifier, and a second resistor and a second switch which are connected in series between the inverting input terminal and a supply terminal of the operational amplifier.
摘要翻译： 提供了一种能够检测输入端已经断开而没有限制输入信号的电压范围的运算放大器。 运算放大器包括检测运算放大器的反相输入端已经断开的第一比较器，检测运算放大器的非反相输入端已经断开的第二比较器，第一电阻和第一 开关，其由第一比较器和第二比较器的输出信号控制，并串联连接在运算放大器的非反相输入端子和接地端子之间，第二电阻器和第二开关串联连接 在反相输入端和运算放大器的电源端之间。
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公开(公告)号：US20150070803A1
公开(公告)日：2015-03-12
申请号：US14024833
申请日：2013-09-12
发明人： Ahmed Abdel Monem Youssef , Prasad Srinivasa Siva Gudem , Li-Chung Chang , Ehab Ahmed Sobhy Abdel Ghany
IPC分类号： H02H9/04
CPC分类号： H02H9/046 , H01L27/0255 , H03F1/223 , H03F1/523 , H03F2200/336 , H03F2200/441 , H03F2200/444
摘要： Techniques for improving electro-static discharge (ESD) performance in integrated circuits (IC's). In an aspect, one or more protective diodes are provided between various nodes of the IC. For example, protective diode(s) may be provided between the drain and gate of an amplifier input transistor, and/or between the drain and ground, etc. In certain exemplary embodiments, the amplifier may be a cascode amplifier. Further aspects for effectively dealing with ESD phenomena are described.
摘要翻译： 用于提高集成电路（IC）中静电放电（ESD）性能的技术。 在一个方面，在IC的各个节点之间提供一个或多个保护二极管。 例如，可以在放大器输入晶体管的漏极和栅极之间和/或在漏极和地之间提供保护二极管等。在某些示例性实施例中，放大器可以是共源共栅放大器。 描述了有效处理ESD现象的其他方面。
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