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61. 发明授权

US07518452B2 Voltage-controlled current source and variable-gain amplifier 失效
标题翻译：压控电流源和可变增益放大器
公开(公告)号：US07518452B2
公开(公告)日：2009-04-14
申请号：US11677773
申请日：2007-02-22
申请人： Shigeo Imai
发明人： Shigeo Imai
IPC分类号： H03F3/45
CPC分类号： H03G1/04 , H03F1/304 , H03F3/45188 , H03F2200/78 , H03F2203/45302 , H03F2203/45676 , H03F2203/45702 , H03F2203/45726 , H03G3/00
摘要： A voltage-controlled current source includes a current source having temperature dependency, a voltage source having process dependency, a first signal conversion circuit which generates second voltage having temperature dependency and process dependency by use of current of the current source and first voltage of the voltage source, a second signal conversion circuit which converts a first control signal used to control transfer conductance into a second control signal by using the second voltage as a reference, and a voltage-controlled current source circuit whose transfer conductance is controlled according to the second control signal.
摘要翻译：压控电流源包括具有温度依赖性的电流源，具有工艺依赖性的电压源，通过使用电流源的电流和电压的第一电压产生具有温度依赖性和工艺依赖性的第二电压的第一信号转换电路源，第二信号转换电路，其通过使用第二电压作为基准将用于控制转移电导的第一控制信号转换为第二控制信号;以及压控电流源电路，其转移电导根据第二控制被控制信号。

62. 发明授权

US06864723B2 High-swing transconductance amplifier 有权
标题翻译：高摆幅跨导放大器
公开(公告)号：US06864723B2
公开(公告)日：2005-03-08
申请号：US09956114
申请日：2001-09-20
申请人： Ka Lun Choi
发明人： Ka Lun Choi
IPC分类号： H03F3/45 , H03L7/089 , H03L7/10 , H03D11/00
CPC分类号： H03F3/45179 , H03F3/4521 , H03F3/45717 , H03F2203/45408 , H03F2203/45431 , H03F2203/45508 , H03F2203/45658 , H03F2203/45676 , H03L7/0896 , H03L7/10
摘要： A charge pump circuit includes a high-swing transconductance amplifier. A high input swing transconductance is provided in a negative feedback loop of the charge pump circuit without an abrupt change in transconductance. The high-swing transconductance amplifier includes a transconductance cell and high-swing circuitry. The transconductance cell includes a current supply transistor, which provides current for transconductance while input voltages are within the operational range for the transconductance cell. When the input voltages increase so as to be outside of the operational range, the current source transistor enters into triode region of operation, and provides reduced current. The high-swing circuitry supplies the current in this case so that abrupt change in transconductance does not occur. The high-swing circuitry widens the output compliant voltage range of the charge pump circuit and hence reduces the sensitivity requirement of the VCO, Kvco, in any PLL design, in particular design for PLLs used in tuners.
摘要翻译：电荷泵电路包括高摆幅跨导放大器。在电荷泵电路的负反馈回路中提供高输入摆幅跨导，而跨导不突然变化。高摆幅跨导放大器包括跨导单元和高摆幅电路。跨导单元包括电流源晶体管，其提供跨导电流，而输入电压在跨导单元的工作范围内。当输入电压增加到超出工作范围时，电流源晶体管进入工作的三极管区域，并提供降低的电流。在这种情况下，高摆幅电路提供电流，以便不会发生跨导的突然变化。高摆幅电路拓宽了电荷泵电路的输出兼容电压范围，因此在任何PLL设计中降低了VCO，Kvco的灵敏度要求，特别是在调谐器中使用的PLL的设计。

63. 发明申请

US20040160249A1 High-swing transconductance amplifier for charge pump circuit 有权
标题翻译：用于电荷泵电路的高摆幅跨导放大器
公开(公告)号：US20040160249A1
公开(公告)日：2004-08-19
申请号：US10781822
申请日：2004-02-20
申请人： Broadcom Corporation
发明人： Ka Lun Choi
IPC分类号： H03L007/06
CPC分类号： H03F3/45179 , H03F3/4521 , H03F3/45717 , H03F2203/45408 , H03F2203/45431 , H03F2203/45508 , H03F2203/45658 , H03F2203/45676 , H03L7/0896 , H03L7/10
摘要： A charge pump circuit includes a high-swing transconductance amplifier. A high input swing transconductance is provided in a negative feedback loop of the charge pump circuit without an abrupt change in transconductance. The high-swing transconductance amplifier includes a transconductance cell and high-swing circuitry. The transconductance cell includes a current supply transistor, which provides current for transconductance while input voltages are within the operational range for the transconductance cell. When the input voltages increase so as to be outside of the operational range, the current source transistor enters into triode region of operation, and provides reduced current. The high-swing circuitry supplies the current in this case so that abrupt change in transconductance does not occur. The high-swing circuitry widens the output compliant voltage range of the charge pump circuit and hence reduces the sensitivity requirement of the VCO, Kvco, in any PLL design, in particular design for PLLs used in tuners.
摘要翻译：电荷泵电路包括高摆幅跨导放大器。在电荷泵电路的负反馈回路中提供高输入摆幅跨导，而跨导不突然变化。高摆幅跨导放大器包括跨导单元和高摆幅电路。跨导单元包括电流源晶体管，其提供跨导电流，而输入电压在跨导单元的工作范围内。当输入电压增加到超出工作范围时，电流源晶体管进入工作的三极管区域，并提供降低的电流。在这种情况下，高摆幅电路提供电流，以便不会发生跨导的突然变化。高摆幅电路拓宽了电荷泵电路的输出兼容电压范围，因此在任何PLL设计中降低了VCO，Kvco的灵敏度要求，特别是在调谐器中使用的PLL的设计。

64. 发明申请

US20020036538A1 High-swing transconductance amplifier for charge pump circuit 有权
标题翻译：用于电荷泵电路的高摆幅跨导放大器
公开(公告)号：US20020036538A1
公开(公告)日：2002-03-28
申请号：US09956114
申请日：2001-09-20
发明人： Ka Lun Choi
IPC分类号： G06G007/12
CPC分类号： H03F3/45179 , H03F3/4521 , H03F3/45717 , H03F2203/45408 , H03F2203/45431 , H03F2203/45508 , H03F2203/45658 , H03F2203/45676 , H03L7/0896 , H03L7/10
摘要： A charge pump circuit includes a high-swing transconductance amplifier. A high input swing transconductance is provided in a negative feedback loop of the charge pump circuit without an abrupt change in transconductance. The high-swing transconductance amplifier includes a transconductance cell and high-swing circuitry. The transconductance cell includes a current supply transistor, which provides current for transconductance while input voltages are within the operational range for the transconductance cell. When the input voltages increase so as to be outside of the operational range, the current source transistor enters into triode region of operation, and provides reduced current. The high-swing circuitry supplies the current in this case so that abrupt change in transconductance does not occur. The high-swing circuitry widens the output compliant voltage range of the charge pump circuit and hence reduces the sensitivity requirement of the VCO, Kvco, in any PLL design, in particular design for PLLs used in tuners.
摘要翻译：电荷泵电路包括高摆幅跨导放大器。在电荷泵电路的负反馈回路中提供高输入摆幅跨导，而跨导不突然变化。高摆幅跨导放大器包括跨导单元和高摆幅电路。跨导单元包括电流源晶体管，其提供跨导电流，而输入电压在跨导单元的工作范围内。当输入电压增加到超出工作范围时，电流源晶体管进入工作的三极管区域，并提供降低的电流。在这种情况下，高摆幅电路提供电流，以便不会发生跨导的突然变化。高摆幅电路拓宽了电荷泵电路的输出兼容电压范围，因此在任何PLL设计中降低了VCO，Kvco的灵敏度要求，特别是在调谐器中使用的PLL的设计。

65. 发明授权

US5140280A Rail-to-rail output stage of an operational amplifier 失效
标题翻译：运行放大器的轨至轨输出级
公开(公告)号：US5140280A
公开(公告)日：1992-08-18
申请号：US753129
申请日：1991-08-30
申请人： Robert L. Vyne , Thomas D. Petty , Rikki Koda
发明人： Robert L. Vyne , Thomas D. Petty , Rikki Koda
IPC分类号： H03F3/30 , H03F3/45
CPC分类号： H03F3/3067 , H03F3/45121 , H03F3/4556 , H03F3/45587 , H03F2203/45571 , H03F2203/45676 , H03F2203/45732
摘要： An input stage of an operational amplifier uses current sources to allow first and second differential input transistor pairs to operate near the power supply rails. The output stage of the operational amplifier also operates within a saturation potential of the power supply rails. The first differential input transistor pair operates when the input signal is less than a predetermined threshold, while the second differential input transistor pair operates when the input signal is greater than the predetermined threshold. A detection circuit at the input terminals prevents phase inversion of the output signal should the inputs be driven beyond the power supply rails. A current cancellation circuit removes current variation induced by voltage changes at the output of the input stage and provides high gain and low input offset voltage.
摘要翻译：运算放大器的输入级使用电流源来允许第一和第二差分输入晶体管对在电源轨附近操作。运算放大器的输出级也在电源轨的饱和电位内工作。当输入信号小于预定阈值时，第一差分输入晶体管对工作，而当输入信号大于预定阈值时第二差分输入晶体管对工作。如果输入被驱动超过电源轨，则输入端子处的检测电路防止输出信号的相位反转。电流消除电路消除由输入级输出端的电压变化引起的电流变化，并提供高增益和低输入失调电压。

66. 发明公开

EP3261250A1 AMPLIFICATION CIRCUIT 审中-公开
标题翻译：功率放大电路
公开(公告)号：EP3261250A1
公开(公告)日：2017-12-27
申请号：EP16885458.6
申请日：2016-07-19
申请人： Shenzhen Goodix Technology Co., Ltd.
发明人： ZHANG, Mengwen
IPC分类号： H03F3/45
CPC分类号： H03F1/0205 , H03F1/301 , H03F1/32 , H03F3/005 , H03F3/187 , H03F3/45183 , H03F3/45188 , H03F3/45192 , H03F3/45475 , H03F3/45659 , H03F3/45699 , H03F3/45762 , H03F2200/129 , H03F2200/156 , H03F2200/159 , H03F2200/18 , H03F2200/222 , H03F2200/252 , H03F2200/264 , H03F2200/471 , H03F2200/555 , H03F2203/45008 , H03F2203/45012 , H03F2203/45024 , H03F2203/45028 , H03F2203/45054 , H03F2203/45068 , H03F2203/45082 , H03F2203/45112 , H03F2203/45134 , H03F2203/45136 , H03F2203/45171 , H03F2203/45174 , H03F2203/45182 , H03F2203/45188 , H03F2203/45192 , H03F2203/45208 , H03F2203/45244 , H03F2203/45332 , H03F2203/45421 , H03F2203/45434 , H03F2203/45444 , H03F2203/45512 , H03F2203/45514 , H03F2203/45534 , H03F2203/45544 , H03F2203/45546 , H03F2203/45551 , H03F2203/45586 , H03F2203/45588 , H03F2203/45616 , H03F2203/45632 , H03F2203/45642 , H03F2203/45656 , H03F2203/45674 , H03F2203/45676
摘要： The present application provides an amplifying circuit comprising a reference voltage generating circuit, a common-mode voltage conversion circuit, a common-mode negative feedback circuit, and an amplifying sub-circuit. The reference voltage generating circuit generates a first reference voltage, a second reference voltage, and a reference common-mode voltage according to a post-stage common-mode voltage, the common-mode voltage conversion circuit converts the pre-stage output differential signal into a differential input signal according to the reference common-mode voltage, the common-mode negative feedback circuit generates a control voltage to quickly establish a common-mode negative feedback of the amplifying sub-circuit, wherein the first reference voltage and the second reference voltage are used to cancel a baseline signal of the pre-stage output differential signal. The amplifying circuit provided in the present application can eliminate the baseline signal, convert the common-mode voltage and quickly establish the common-mode negative feedback.
摘要翻译：本申请提供一种放大电路，包括参考电压产生电路，共模电压转换电路，共模负反馈电路和放大子电路。参考电压产生电路根据后级共模电压产生第一参考电压，第二参考电压和参考共模电压，共模电压转换电路将前级输出差分信号转换为根据所述参考共模电压产生差分输入信号，所述共模负反馈电路产生控制电压以快速建立所述放大子电路的共模负反馈，其中，所述第一参考电压和所述第二参考电压被用于消除前级输出差分信号的基线信号。本申请提供的放大电路可以消除基线信号，转换共模电压，快速建立共模负反馈。

67. 发明公开

EP3228002A1 HIGH GAIN LOAD CIRCUIT FOR A DIFFERENTIAL PAIR USING DEPLETION MODE TRANSISTORS 审中-公开
标题翻译：采用消耗模式晶体管的微分对的高增益负载电路
公开(公告)号：EP3228002A1
公开(公告)日：2017-10-11
申请号：EP15825667.7
申请日：2015-12-04
申请人： Analog Devices, Inc.
发明人： SHARMA, Yogesh Jayaraman , FIORENZA, James
IPC分类号： H03F3/45 , G05F3/26
CPC分类号： H03K17/6871 , H01L27/088 , H01L29/2003 , H03F3/45188 , H03F3/45385 , H03F2200/303 , H03F2200/75 , H03F2203/45036 , H03F2203/45182 , H03F2203/45184 , H03F2203/45188 , H03F2203/45202 , H03F2203/45208 , H03F2203/45224 , H03F2203/45656 , H03F2203/45674 , H03F2203/45676 , H03F2203/45701 , H03F2203/45702 , H03F2203/45722
摘要： A differential pair gain stage is disclosed. In one embodiment, the gain stage includes a differential pair of depletion-mode transistors, including a first and a second n-type transistor. In certain embodiments of the invention, the depletion mode transistor may be GaN (gallium nitride) field effect transistors. The gain stage includes an active load including one or more depletion mode transistors electrically coupled to at least one of the drains of depletion mode transistors of the differential pair. The active load may include a source follower for maintaining the AC voltages at the drains of the differential pair at a constant value and may further include a casocde stage for setting a fixed drain source voltage across the output transistors to increase the output impedance and gain of the stage.
摘要翻译：公开了一种差分对增益级。在一个实施例中，增益级包括差分耗尽型晶体管对，其包括第一和第二n型晶体管。在本发明的某些实施例中，耗尽型晶体管可以是GaN（氮化镓）场效应晶体管。增益级包括有源负载，该有源负载包括电耦合到差分对的耗尽型晶体管的漏极中的至少一个漏极的一个或多个耗尽型晶体管。有源负载可以包括源极跟随器，用于将差分对的漏极处的AC电压维持在恒定值，并且还可以包括用于设置输出晶体管两端的固定漏极源电压以增加输出阻抗和增益舞台。

68. 发明公开

EP2688203A3 Multiple-output transconductance amplifier based instrumentation amplifier 审中-公开
标题翻译：基于具有多个输出的跨导放大器仪表放大器
公开(公告)号：EP2688203A3
公开(公告)日：2017-02-08
申请号：EP13174997.0
申请日：2013-07-03
申请人： Honeywell International Inc.
发明人： Werking, Paul M.
IPC分类号： H03F3/45
CPC分类号： H03F3/45 , H03F3/45183 , H03F3/45475 , H03F2203/45644 , H03F2203/45676 , H03F2203/45711
摘要： This disclosure is directed to devices and integrated circuits for instrumentation amplifiers. In one example, an instrumentation amplifier device uses two non-inverted outputs of a first multiple-output transconductance amplifier, and a non-inverted output and an inverted output of a second multiple-output transconductance amplifier. Both multiple-output transconductance amplifiers have a non-inverted output connected to an inverting input, and a noninverting input connected to a respective input voltage terminal. A first resistor is connected between the inverting inputs of both multiple-output transconductance amplifiers. The outputs of both multiple-output transconductance amplifiers are connected together, connected through a second resistor to ground, and connected to an output voltage terminal. In other examples, two pairs of outputs from triple-output transconductance amplifiers are connected to provide two voltage output terminals, and may also be connected to buffers or a differential amplifier. These provide various advantages over traditional instrumentation amplifiers.

69. 发明公开

EP3002659A3 CIRCUITS AND METHOD FOR CONTROLLING TRANSIENT FAULT CONDITIONS IN A LOW DROPOUT VOLTAGE REGULATOR 审中-公开
标题翻译： CIRCUITS及方法采用低压废控制器，用于控制临时错误条件
公开(公告)号：EP3002659A3
公开(公告)日：2016-06-29
申请号：EP15188854.2
申请日：2013-10-07
申请人： Dialog Semiconductor GmbH
发明人： Ambreesh, Bhattad
IPC分类号： G05F1/56 , G05F1/46 , H03F3/45
CPC分类号： G05F1/575 , G05F1/462 , G05F1/56 , H02M1/32 , H03F3/45183 , H03F2200/555 , H03F2203/45314 , H03F2203/45636 , H03F2203/45674 , H03F2203/45676
摘要： An overshoot reduction circuit within a low dropout voltage regulator eliminates an overshoot at an output terminal resulting from a transient fault condition occurring at an input or output terminal. The overshoot reduction circuit monitors to sense if there is a transient fault condition occurring at the input or output terminal and provides a Miller capacitance at the output terminal of a differential amplifier of the low dropout voltage regulator to prevent the output of the differential amplifier from being discharged to ground during the transient. A control loop circuit balances current within an active load of the differential amplifier to clamp the output of the differential amplifier to its normal operating point. When the transient fault condition ends, the output voltage of the differential amplifier is set such that a pass transistor of the low dropout regulator responds quickly to resume the regulation to reduce or eliminate the overshoot.

70. 发明公开

EP2244381A1 Class AB amplifier systems 有权
标题翻译： SystemefürKlasse-AB-Vestärker
公开(公告)号：EP2244381A1
公开(公告)日：2010-10-27
申请号：EP10159947.0
申请日：2010-04-14
申请人： Number 14 B.V.
发明人： Eschauzier, Rudy, G. H. , Van Rijn, Nico
IPC分类号： H03F3/45
CPC分类号： H03F3/45192 , H03F2203/45676
摘要： The present invention comprises class AB amplifier systems exhibiting low quiescent power, low-voltage operation, high gain, high bandwidth, low noise and low offset, and requiring a small die area. The amplifier systems use a differential first stage and a second stage of two pair of nested current mirrors interconnected in a particular way. Using a low quiescent current, the present invention reduces power consumption almost to a theoretical minimum. Also the circuit will operate at an input of only 1.8V with a threshold voltage of 1V. Various embodiments are disclosed.
摘要翻译：本发明包括具有低静态功率，低电压操作，高增益，高带宽，低噪声和低偏移的AB类放大器系统，并且需要小的裸片面积。放大器系统使用以特定方式互连的两对嵌套电流镜的差分第一级和第二级。使用低静态电流，本发明将功耗几乎降低到理论上的最小值。此外，电路将在1.8V的输入端工作，阈值电压为1V。公开了各种实施例。

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