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1. 发明授权

US09503038B2 Current controlling device and signal converting apparatus applying the current controlling device 有权
标题翻译：电流控制装置和应用电流控制装置的信号转换装置
公开(公告)号：US09503038B2
公开(公告)日：2016-11-22
申请号：US14541113
申请日：2014-11-13
申请人： MEDIATEK INC.
发明人： Min-Hua Wu , Chih-Hong Lou , Yen-Chuan Huang , Chi-Yun Wang
IPC分类号： H03F1/02 , H03F3/45 , H03G1/00 , H03M1/74
CPC分类号： H03F3/45076 , H03F2200/222 , H03F2200/234 , H03F2203/45151 , H03F2203/45576 , H03G1/0088 , H03M1/742
摘要： A current controlling device includes: a first resistive circuit arranged to selectively conduct a first current to a first output terminal from a first input terminal; and a second resistive circuit arranged to selectively conduct a second current to a second output terminal from the first input terminal; wherein when the first resistive circuit conducts the first current to the first output terminal and when the second resistive circuit does not conduct the second current to the second output terminal, the first input terminal has a first input impedance; when the first resistive circuit does not conduct the first current to the first output terminal and when the second resistive circuit conducts the second current to the second output terminal, the first input terminal has a second input impedance substantially equal to the first input impedance.
摘要翻译：电流控制装置包括：第一电阻电路，布置成选择性地将第一电流从第一输入端子传导到第一输出端子; 以及第二电阻电路，布置成从第一输入端子选择性地将第二电流传导到第二输出端子; 其中当所述第一电阻电路将所述第一电流传导到所述第一输出端时，并且当所述第二电阻电路不将所述第二电流传导到所述第二输出端时，所述第一输入端具有第一输入阻抗; 当第一电阻电路不向第一输出端子传导第一电流，并且当第二电阻电路将第二电流传导到第二输出端时，第一输入端具有基本上等于第一输入阻抗的第二输入阻抗。

2. 发明授权

US09356562B2 Family of slew-enhanced operational transconductance amplifiers 有权
标题翻译：一系列转换增强型运算跨导放大器
公开(公告)号：US09356562B2
公开(公告)日：2016-05-31
申请号：US14168647
申请日：2014-01-30
申请人： Apple Inc.
发明人： A Motamed
IPC分类号： H03F3/45 , H03F1/22
CPC分类号： H03F1/223 , H03F3/45188 , H03F3/45192 , H03F2200/234 , H03F2200/411 , H03F2203/45002 , H03F2203/45024 , H03F2203/45248 , H03F2203/45536 , H03F2203/45544 , H03F2203/45618 , H03F2203/45674 , H03F2203/45676 , H03F2203/45702
摘要： Operational transconductance amplifiers (OTAs) with enhanced slew rate are disclosed. An OTA can have a main amplifier and pre-amplifier gain stage to increase the effective transconductance and bandwidth of the OTA. The pre-amplifier and main amplifier can be coupled to enhance slew current without adding additional bias current to the main amplifier input stages. Pre-amplifier bias current can be recycled and redirected to the load. OTAs with enhanced slew rate can be particularly useful in applications requiring high-frequency switching of voltage levels to drive high capacitance lines. For example, an integrated touch sensor panel and display can be operated by alternatively applying a first voltage level to an electrode in a display mode and a second voltage level during a touch sensing mode using OTA sense or charge amplifiers with enhanced slew rate. Enhanced slew rate can increase the time available to demodulate a touch signal for improved system performance.
摘要翻译：公开了具有增强的转换速率的运算跨导放大器（OTA）。 OTA可以具有主放大器和前置放大器增益级，以增加OTA的有效跨导和带宽。前置放大器和主放大器可以耦合以增强转换电流，而不会向主放大器输入级增加额外的偏置电流。前置放大器偏置电流可以回收并重定向到负载。具有增强的转换速率的OTAs可以在需要高频切换电压电平以驱动高电容线的应用中特别有用。例如，可以通过在使用具有增强的转换速率的OTA感测或电荷放大器的触摸感测模式期间以显示模式和第二电压电平交替施加第一电压电平来操作集成的触摸传感器面板和显示器。增强的转换速率可以增加解调触摸信号的时间，以提高系统性能。

3. 发明授权

US09312825B2 Amplifier input stage and amplifier 有权
标题翻译：放大器输入级和放大器
公开(公告)号：US09312825B2
公开(公告)日：2016-04-12
申请号：US14274258
申请日：2014-05-09
申请人： Analog Devices Global
发明人： Roberto S. Maurino
IPC分类号： H03F3/45 , H03F1/26
CPC分类号： H03F3/45076 , H03F1/26 , H03F3/211 , H03F3/393 , H03F3/45183 , H03F3/45475 , H03F2200/234 , H03F2200/411 , H03F2200/555 , H03F2203/45116 , H03F2203/45212 , H03F2203/45366 , H03F2203/45471 , H03F2203/45562 , H03F2203/45644 , H03F2203/45674
摘要： An amplifier input stage comprising first and second p-type transistors, wherein sources of the first and second p-type transistors are connected to a first node, a drain of the first p-type transistor is connected to a first output of the amplifier input stage, a drain of the second p-type transistor is connected to a second output of the amplifier input stage, a gate of the first p-type transistor is configured to receive a first signal of an input stage differential input signal and a gate of the second p-type transistor is configured to receive a second signal of the input stage differential input signal; first and second n-type transistors, wherein sources of the first and second n-type transistors are connected to a second node, a drain of the first n-type transistor is connected to a third output of the amplifier input stage, a drain of the second n-type transistor is connected to a fourth output of the amplifier input stage, a gate of the first n-type transistor is configured to receive the first signal of the input stage differential input signal and a gate of the second n-type transistor is configured to receive the second signal of the input stage differential input signal; a first circuit arranged to provide a first portion of a first bias current to the first node; and a second circuit arranged to draw a second portion of the first bias current from the second node; wherein the first and second portions are determined by a first signal of an amplifier input signal.
摘要翻译：放大器输入级包括第一和第二p型晶体管，其中第一和第二p型晶体管的源极连接到第一节点，第一p型晶体管的漏极连接到放大器输入端的第一输出端第二p型晶体管的漏极连接到放大器输入级的第二输出，第一p型晶体管的栅极被配置为接收输入级差分输入信号的第一信号和第第二p型晶体管被配置为接收输入级差分输入信号的第二信号; 第一和第二n型晶体管，其中第一和第二n型晶体管的源极连接到第二节点，第一n型晶体管的漏极连接到放大器输入级的第三输出端，漏极第二n型晶体管连接到放大器输入级的第四输出端，第一n型晶体管的栅极被配置为接收输入级差分输入信号的第一信号和第二n型晶体管的栅极晶体管被配置为接收输入级差分输入信号的第二信号; 第一电路，被布置成向第一节点提供第一偏置电流的第一部分; 以及第二电路，布置成从所述第二节点绘制所述第一偏置电流的第二部分; 其中第一和第二部分由放大器输入信号的第一信号确定。

4. 发明授权

US09130518B2 Method and apparatus for correcting asymmetry of an input signal of an amplifier 有权
标题翻译：用于校正放大器的输入信号的不对称的方法和装置
公开(公告)号：US09130518B2
公开(公告)日：2015-09-08
申请号：US14252830
申请日：2014-04-15
申请人： Marvell World Trade LTD.
发明人： Steve Fang , Qiang Tang , Myung Jae Yoo
IPC分类号： H03F1/02 , H03F3/45 , H03F1/32 , H03G1/00 , H03F1/30 , H03G3/00
CPC分类号： H03F3/45071 , H03F1/303 , H03F1/3211 , H03F3/45475 , H03F2200/234 , H03F2203/45116 , H03F2203/45588 , H03F2203/45591 , H03F2203/45594 , H03F2203/45616 , H03F2203/45618 , H03G1/0023 , H03G3/004
摘要： A circuit including an amplifier, a transistor, and first, second and third resistances. The amplifier includes an input and an output. The amplifier receives an input signal. A cycle of the input signal includes first and second pulses. The input signal is asymmetrical such that the first pulse has a different peak magnitude than the second pulse. The transistor is connected to the input and the output. The first, second, and third resistances are each connected to the input of the amplifier. The second resistance receives a first input voltage. The third resistance receives a second input voltage. The input signal is based on the first resistance and the first and second input voltages. The amplifier corrects some asymmetry of the input signal to provide an output signal. An amount of asymmetry of the output signal is based on (i) the input signal, and (ii) a state of the transistor.
摘要翻译：一种包括放大器，晶体管以及第一，第二和第三电阻的电路。放大器包括输入和输出。放大器接收输入信号。输入信号的周期包括第一和第二脉冲。输入信号是非对称的，使得第一脉冲具有与第二脉冲不同的峰值幅度。晶体管连接到输入和输出。第一，第二和第三电阻各自连接到放大器的输入端。第二电阻接收第一输入电压。第三电阻接收第二输入电压。输入信号基于第一电阻和第一和第二输入电压。放大器校正输入信号的一些不对称性，以提供输出信号。输出信号的不对称量基于（i）输入信号，和（ii）晶体管的状态。

5. 发明申请

US20140218111A1 OPERATIONAL AMPLIFIER CIRCUIT AND METHOD FOR ENHANCING DRIVING CAPACITY THEREOF 有权
标题翻译：操作放大器电路和用于增强其驱动能力的方法
公开(公告)号：US20140218111A1
公开(公告)日：2014-08-07
申请号：US14016136
申请日：2013-09-02
申请人： Novatek Microelectronics Corp.
发明人： Chieh-An Lin , Chun-Yung Cho , Ju-Lin Huang
IPC分类号： H03F3/45
CPC分类号： H03F3/45076 , H03F3/3022 , H03F3/45192 , H03F2200/234 , H03F2203/45116
摘要： An operational amplifier circuit configured to drive a load is provided. The operational amplifier circuit includes an output stage module. The output stage module includes a detection circuit and an output stage circuit. The detection circuit is configured to detect a current output voltage and a previous output voltage based on a comparison result of a current input voltage and the current output voltage. The detection circuit enhances a charge capacity or a discharge capacity of the output stage circuit for the load based on a detection result. Furthermore, a method for enhancing the driving capacity of the operational amplifier circuit is also provided.
摘要翻译：提供了构造成驱动负载的运算放大器电路。运算放大器电路包括输出级模块。输出级模块包括检测电路和输出级电路。检测电路被配置为基于当前输入电压和电流输出电压的比较结果来检测电流输出电压和先前的输出电压。检测电路基于检测结果增强负载的输出级电路的充电容量或放电容量。此外，还提供了一种用于增强运算放大器电路的驱动能力的方法。

6. 发明申请

US20180267092A1 SEMICONDUCTOR DEVICE AND ELECTRONIC CONTROL SYSTEM INCLUDING THE SAME 审中-公开
公开(公告)号：US20180267092A1
公开(公告)日：2018-09-20
申请号：US15987572
申请日：2018-05-23
申请人： RENESAS ELECTRONICS CORPORATION
发明人： Kazuaki KUROOKA , Yasuo MORIMOTO , Yoshihiro FUNATO
IPC分类号： G01R31/02 , H03K3/017 , H03F3/45 , H02P6/12 , G01D5/12 , H02H7/08
CPC分类号： G01R31/025 , G01D5/12 , G01D5/24466 , H02H7/0833 , H02P6/12 , H02P6/16 , H03F3/45071 , H03F3/45475 , H03F2200/129 , H03F2200/231 , H03F2200/234 , H03F2200/261 , H03F2203/45116 , H03F2203/45138 , H03F2203/45171 , H03F2203/45528 , H03K3/017
摘要： According to one embodiment, a semiconductor device includes external terminals supplied with the pair of voltage signals based on a detection result of a resolver through first and second input resistances, respectively, an operation amplifier configured to amplify a potential difference between the pair of the voltage signals supplied to the external terminals, a feedback resistance disposed between an output terminal of the operation amplifier and one of two input terminals thereof, switches disposed between the two input terminals of the operation amplifier and the external terminals, respectively, and a short-circuit failure detection circuit configured to detect whether or not a short-circuit failure has occurred in the resolver based on a voltage level of each of the external terminals in a state where the switches are in an off-state.

7. 发明申请

US20180241357A1 PHOTOELECTRIC CONVERSION DEVICE 审中-公开
公开(公告)号：US20180241357A1
公开(公告)日：2018-08-23
申请号：US15893013
申请日：2018-02-09
申请人： CANON KABUSHIKI KAISHA
发明人： Masanori Shibata , Hirotaka Shiomichi
IPC分类号： H03F1/30 , G01J1/44 , H03F3/45 , H03F1/26
CPC分类号： H03F1/303 , G01J1/44 , H01L27/1443 , H01L27/1446 , H01L31/02019 , H03F1/26 , H03F3/087 , H03F3/45071 , H03F3/45475 , H03F2200/234 , H03F2200/249 , H03F2200/417 , H03F2203/45138 , H03F2203/45171 , H03F2203/45526 , H03K17/687
摘要： A photoelectric conversion device is provided. The device comprises a light receiving element, first and second transimpedance amplifiers configured to receive a signal of the light receiving element and output a voltage, a differential operation amplifier configured to perform a differential amplification for outputs of the first and second transimpedance amplifiers and a switching unit. The switching unit includes an output switching unit configured to switch connections between a first state where the light receiving element and the first transimpedance amplifier are connected and a second state where the light receiving element and the second transimpedance amplifier are connected, and a capacitance adjusting unit connected to an input terminal of each of the first and second transimpedance amplifiers and configured to adjust a capacitance value of the first and transimpedance amplifier and/or a capacitance value of the second transimpedance amplifier.

8. 发明授权

US10006955B2 Semiconductor device and electronic control system including the same 有权
公开(公告)号：US10006955B2
公开(公告)日：2018-06-26
申请号：US15402660
申请日：2017-01-10
申请人： RENESAS ELECTRONICS CORPORATION
发明人： Kazuaki Kurooka , Yasuo Morimoto , Yoshihiro Funato
IPC分类号： G01R31/00 , G01R31/02 , G01D5/12 , H02H7/08 , H02P6/12 , H03F3/45 , H03K3/017
CPC分类号： G01R31/025 , G01D5/12 , G01D5/24466 , H02H7/0833 , H02P6/12 , H02P6/16 , H03F3/45071 , H03F3/45475 , H03F2200/129 , H03F2200/231 , H03F2200/234 , H03F2200/261 , H03F2203/45116 , H03F2203/45138 , H03F2203/45171 , H03F2203/45528 , H03K3/017
摘要： According to one embodiment, a semiconductor device includes external terminals supplied with the pair of voltage signals based on a detection result of a resolver through first and second input resistances, respectively, an operation amplifier configured to amplify a potential difference between the pair of the voltage signals supplied to the external terminals, a feedback resistance disposed between an output terminal of the operation amplifier and one of two input terminals thereof, switches disposed between the two input terminals of the operation amplifier and the external terminals, respectively, and a short-circuit failure detection circuit configured to detect whether or not a short-circuit failure has occurred in the resolver based on a voltage level of each of the external terminals in a state where the switches are in an off-state.

9. 发明申请

US20180159484A1 LINEAR CMOS PA WITH LOW QUIESCENT CURRENT AND BOOSTED MAXIMUM LINEAR OUTPUT POWER 审中-公开
公开(公告)号：US20180159484A1
公开(公告)日：2018-06-07
申请号：US15578058
申请日：2016-04-28
申请人： Qorvo US, Inc.
发明人： Stephen James Franck , Xin Wang , Alireza Oskoui
IPC分类号： H03F1/32 , H03F1/56 , H03F1/02 , H03F1/22 , H03F3/21 , H03F3/193
CPC分类号： H03F1/3258 , H03F1/0205 , H03F1/0266 , H03F1/223 , H03F1/3205 , H03F1/3223 , H03F1/56 , H03F3/193 , H03F3/195 , H03F3/21 , H03F3/245 , H03F2200/108 , H03F2200/18 , H03F2200/211 , H03F2200/222 , H03F2200/228 , H03F2200/234 , H03F2200/246 , H03F2200/301 , H03F2200/318 , H03F2200/321 , H03F2200/408 , H03F2200/42 , H03F2200/435 , H03F2200/451 , H03F2200/465 , H03F2200/61 , H03F2200/75 , H03F2200/99 , H03F2201/3212 , H03F2201/3218 , H03G3/3042 , H03G2201/106 , H03G2201/40
摘要： The present disclosure relates to a power amplifier (PA) system provided in a semiconductor device and having feed forward gain control. The PA system comprises a transmit path and control circuitry. The transmit path is configured to amplify an input radio frequency (RF) signal and comprises a first tank circuit and a PA stage. The control circuitry is configured to detect a power level associated with the input RF signal and control a first bias signal provided to the PA stage based on a first function of the power level and control a quality factor (Q) of the first tank circuit based on a second function of the power level.

10. 发明申请

US20170141748A1 AMPLIFIER SYSTEM, CONTROLLER OF MAIN AMPLIFIER AND ASSOCIATED CONTROL METHOD 有权
公开(公告)号：US20170141748A1
公开(公告)日：2017-05-18
申请号：US15241035
申请日：2016-08-18
申请人： MEDIATEK INC.
发明人： Lai-Ching Lin , Ming-Da Tsai
IPC分类号： H03G3/30 , H03F3/193 , H03K5/1532 , H03F3/21
CPC分类号： H03G3/3042 , H03F1/223 , H03F1/523 , H03F3/193 , H03F3/195 , H03F3/21 , H03F3/245 , H03F3/45179 , H03F3/45475 , H03F3/72 , H03F2200/108 , H03F2200/153 , H03F2200/18 , H03F2200/228 , H03F2200/234 , H03F2200/258 , H03F2200/301 , H03F2200/393 , H03F2200/435 , H03F2200/441 , H03F2200/451 , H03F2200/462 , H03F2200/471 , H03F2200/477 , H03F2200/481 , H03F2200/498 , H03F2200/555 , H03F2200/75 , H03F2200/78 , H03K5/1532
摘要： The present invention provides a control circuit to stabilize an output power of a power amplifier. The control circuit comprises a voltage clamping loop, a current clamping loop and a loop for reducing power variation under VSWR, where the voltage clamping loop is used to clamp an output voltage of the power amplifier within a defined voltage range, the current clamping loop is used to clamp a current of the power amplifier within a defined current range, and the loop for reducing power variation under VSWR is implemented by an impedance detector to compensate the output power under VSWR variation.

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