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1. 发明授权

US06836185B1 High-speed electro-optical modulator drivers and method 有权
标题翻译：高速电光调制器的驱动及方法
公开(公告)号：US06836185B1
公开(公告)日：2004-12-28
申请号：US10151059
申请日：2002-05-17
申请人： Carl Walter Pobanz
发明人： Carl Walter Pobanz
IPC分类号： H03F345
CPC分类号： G02F1/0327 , H03F3/45183 , H03F2200/36 , H03F2203/45516 , H03F2203/45521 , H03F2203/45554 , H03F2203/45601 , H03F2203/45638 , H03F2203/45652 , H03F2203/45691
摘要： A modulator driver design is disclosed that employs a differential pair amplifier coupled to feedback amplifiers through tuning networks. Each tuning network comprises a set of inductors that enables a broadband response while reducing the loading effect of the feedback amplifier. An active load is placed at the output to serve multiple purposes, including: generating a high output swing, enabling a lower power supply voltage, and allowing the entire bias circuit to be monolithically integrated. A modulator driver comprises: a first amplifier stage (A1) having inputs and outputs; a second amplifier stage (A2), having inputs and outputs, the inputs of the second amplifier coupled to the outputs of the first amplifier; an active load having inputs and outputs, the inputs of the active load coupled to the outputs of the amplifier stage; and a feedback stage (A3) having inputs and outputs, the inputs of the feedback stage coupled to the outputs of the second amplifier stage by means of a tuning network, and the outputs of the feedback stage coupled to the inputs of the second amplifier stage.
摘要翻译：公开了一种调制器驱动器设计，其采用通过调谐网络耦合到反馈放大器的差分对放大器。每个调谐网络包括一组电感器，其能够实现宽带响应，同时降低反馈放大器的负载效应。有源负载放置在输出端，用于多种用途，包括：产生高输出摆幅，实现更低的电源电压，并允许整个偏置电路单片集成。调制器驱动器包括：具有输入和输出的第一放大级（A1）; 具有输入和输出的第二放大器级（A2），耦合到第一放大器的输出的第二放大器的输入; 具有输入和输出的有源负载，耦合到放大器级的输出的有源负载的输入; 和具有输入和输出的反馈级（A3），反馈级的输入通过调谐网耦合到第二放大级的输出，反馈级的输出耦合到第二放大级的输入端。

2. 发明授权

US06833760B1 Low power differential amplifier powered by multiple unequal power supply voltages 有权
标题翻译：低功率差动放大器由多个不相等的电源电压供电
公开(公告)号：US06833760B1
公开(公告)日：2004-12-21
申请号：US10614321
申请日：2003-07-07
申请人： Arlo Aude
发明人： Arlo Aude
IPC分类号： H03F345
CPC分类号： H03F3/45188 , H03F1/086 , H03F2200/516 , H03F2203/45651 , H03F2203/45722
摘要： A low power differential amplifier powered by a plurality of unequal power supply voltages. The input stage operates at a higher power supply voltage so as to maintain its transistors in operational states of saturation while providing a sufficient dynamic signal voltage range. The output stage operates at a lower power supply voltage while providing a sufficient dynamic signal current range.
摘要翻译：由多个不相等的电源电压供电的低功率差分放大器。输入级在更高的电源电压下工作，以便在提供足够的动态信号电压范围的同时将其晶体管保持在饱和状态。输出级在较低的电源电压下工作，同时提供足够的动态信号电流范围。

3. 发明授权

US06831516B2 Method of forming a variable propagation delay semiconductor device and structure therefor 有权
标题翻译：形成可变传播延迟半导体器件的方法及其结构
公开(公告)号：US06831516B2
公开(公告)日：2004-12-14
申请号：US10369230
申请日：2003-02-20
申请人： Joseph Hughes
发明人： Joseph Hughes
IPC分类号： H03F345
CPC分类号： H03K3/0322 , H03F3/4508 , H03F2203/45471 , H03K17/603
摘要： A differential amplifier (10, 60) is formed to have a propagation delay that varied responsively to a control signal received on a differential control signal input. The propagation delay is varied by changing the bias current of a pair of differential input transistor (11, 13).
摘要翻译：差分放大器（10,60）形成为具有响应于差分控制信号输入端接收的控制信号而变化的传播延迟。通过改变一对差分输入晶体管（11,13）的偏置电流来改变传播延迟。

4. 发明授权

US06831515B2 Slew rate enhancement circuit 有权
标题翻译：压摆率增强电路
公开(公告)号：US06831515B2
公开(公告)日：2004-12-14
申请号：US10158625
申请日：2002-05-30
申请人： Jeffrey David Johnson
发明人： Jeffrey David Johnson
IPC分类号： H03F345
CPC分类号： H03F3/45085 , H03F2203/45454 , H03F2203/45466 , H03F2203/45632
摘要： An improved circuit and method is provided that can increase the slew rate of an operational amplifier without adversely affecting its response time. An operational amplifier comprises a large signal detector, a bias circuit having a bias override component, and a bias decay circuit. As a result, the operational amplifier provides the ability to control the increase in current supplied to its compensation capacitors while also providing a smooth transition to the decay phase. In accordance with an exemplary embodiment of the present invention, an exponential decay to the increased bias condition is provided.
摘要翻译：提供了一种改进的电路和方法，其可以增加运算放大器的转换速率而不会不利地影响其响应时间。运算放大器包括大信号检测器，具有偏置倍率分量的偏置电路和偏置衰减电路。结果，运算放大器提供了控制提供给其补偿电容器的电流增加的能力，同时还提供到衰减阶段的平滑过渡。根据本发明的示例性实施例，提供了对增加的偏置条件的指数衰减。

5. 发明授权

US06831514B2 Method of increasing output current capability of negative feedback amplifiers with output current limiting and freedom from thermal runaway 有权
标题翻译：增加输出电流限制并且不受热失控的负反馈放大器的输出电流能力的方法
公开(公告)号：US06831514B2
公开(公告)日：2004-12-14
申请号：US10095215
申请日：2002-03-11
申请人： James K Waller, Jr. , Derek F. Bowers
发明人： James K Waller, Jr. , Derek F. Bowers
IPC分类号： H03F345
CPC分类号： H03F3/3069 , H03F1/302 , H03F1/3217 , H03F1/34 , H03F1/52 , H03F2203/30057
摘要： A high output current negative feedback power amplifier amplifies an input signal by use of a monolithic operated amplifier with a current limiting resistor in its output path. The output current of the amplifier is automatically increased when the voltage drop across the current limiting resistor increases beyond a predetermined point and global current limiting automatically occurs when the output current of the monolithic amplifier exceeds a predetermined point.
摘要翻译：高输出电流负反馈功率放大器通过使用其输出路径中的限流电阻器的单片操作放大器来放大输入信号。当电流限制电阻上的电压降超过预定点时，放大器的输出电流自动增加，当单片放大器的输出电流超过预定点时，全局电流限制自动发生。

6. 发明授权

US06828856B2 Amplifier gain boost circuitry and method 有权
公开(公告)号：US06828856B2
公开(公告)日：2004-12-07
申请号：US10698661
申请日：2003-10-31
申请人： Stephen J. Sanchez , Vadim V. Ivanov , Walter B. Meinel
发明人： Stephen J. Sanchez , Vadim V. Ivanov , Walter B. Meinel
IPC分类号： H03F345
CPC分类号： H03F3/45192 , H03F2203/45028 , H03F2203/45301 , H03F2203/45302 , H03F2203/45682
摘要： A gain boost circuit is provided in a differential amplifier including differentially connected first and second input transistors the drains of which are coupled to sources of first and second cascode transistors. A third cascode transistor has a source coupled to a drain of the first cascode transistor and a drain coupled to a bias current source. A gain boost amplifier has an output coupled to the gate of the third cascode transistor, a first input coupled to the drain of the first cascode transistor, and a second input coupled to the drain of the second cascode transistor.

7. 发明授权

US06822509B2 Differential circuit with a linearity correction loop 有权
标题翻译：具有线性校正回路的差分电路
公开(公告)号：US06822509B2
公开(公告)日：2004-11-23
申请号：US10370396
申请日：2003-02-20
申请人： John M. Muza
发明人： John M. Muza
IPC分类号： H03F345
CPC分类号： H03F1/08 , H03F1/3211 , H03F1/34 , H03F3/45475
摘要： A differential circuit with linearity correction loop includes a main differential amplifier 30, and a correction amplifier 20 having inputs coupled to the outputs of the main differential amplifier 30 through feedback paths. The output signals from the correction amplifier 20 are combined with the inputs to the main amplifier 30 such that a negative feedback loop is formed around the differential circuit. This feedback loop provides stability with only a minor power increase.
摘要翻译：具有线性校正回路的差分电路包括主差分放大器30和具有通过反馈路径耦合到主差分放大器30的输出的输入的校正放大器20。来自校正放大器20的输出信号与主放大器30的输入组合，使得在差分电路周围形成负反馈回路。该反馈环路仅提供较小的功率提供稳定性。

8. 发明授权

US06812796B2 Inter-stage coupling in multistage amplifiers 失效
标题翻译：多级放大器中的级间耦合
公开(公告)号：US06812796B2
公开(公告)日：2004-11-02
申请号：US10369037
申请日：2003-02-18
申请人： Vladimir Pryanishnikov , Alexander Khaydarov , Oleg Kobildjanov
发明人： Vladimir Pryanishnikov , Alexander Khaydarov , Oleg Kobildjanov
IPC分类号： H03F345
CPC分类号： H03F3/45085 , H03F1/56
摘要： A multistage amplifier includes a first gain stage having a first input terminal and a first output terminal, and a second gain stage having a first input terminal. A first inter-stage resistive element is coupled in series to the first output terminal of the first gain stage and the first input terminal of the second gain stage to reduce the adverse affects of one gain stage on a previous gain stage. The multistage amplifier may also have a differential pair with a local feedback path for each transistor of the differential pair. Such local feedback helps to stabilize an imaginary component of the input impedance of the differential amplifier. Such stabilization also helps to reduce the adverse affects one gain stage may have on a previous gain stage.
摘要翻译：多级放大器包括具有第一输入端和第一输出端的第一增益级和具有第一输入端的第二增益级。第一级间电阻元件串联耦合到第一增益级的第一输出端和第二增益级的第一输入端，以减少一个增益级对先前增益级的不利影响。多级放大器还可以具有与差分对的每个晶体管的局部反馈路径的差分对。这种局部反馈有助于稳定差分放大器的输入阻抗的虚分量。这种稳定也有助于减少增益阶段对先前增益阶段可能产生的不利影响。

9. 发明授权

US06812788B2 Amplifying circuit 有权
标题翻译：放大电路
公开(公告)号：US06812788B2
公开(公告)日：2004-11-02
申请号：US10472887
申请日：2004-03-09
申请人： Otmar Kern
发明人： Otmar Kern
IPC分类号： H03F345
CPC分类号： H03F1/56
摘要： In signal sources having a high impedance, typically a capacitive “signal source” such as capacitor-microphone capsules, it is common practice to use amplifier circuits that include means for coupling signals and determining operating points in addition to the actual amplifier having a high-resistance, non-inverting input. For setting the operating points of the signal source and the amplifier, separate bias-voltage sources are provided; these are coupled to the signal source and the non-inverting input, respectively, of the amplifier via a coupling impedance. At least one coupling capacitance is disposed in the signal path between the signal source and the non-inverting input of the amplifier. To attain a considerable noise gain without the disadvantage of very high idle times in this type of amplifier circuit, it is proposed that the coupling impedances be formed from a nonlinear resistance (D1, D2 or D3, D4) and an ohmic resistance (R3 or R4) connected thereto in series. Moreover, the output signal (S2) of the amplifier (ICI) or a signal derived therefrom is fed back to the coupling impedances (D1, D2, R3 or D3, D4, R4) via a second or third coupling capacitance (C3 or C4).
摘要翻译：在具有高阻抗的信号源中，通常是诸如电容麦克风胶囊的电容“信号源”，通常的做法是使用放大器电路，其包括用于耦合信号和确定工作点的装置，以及具有高阻抗的实际放大器，电阻，同相输入。为了设置信号源和放大器的工作点，提供了单独的偏置电压源; 它们分别通过耦合阻抗耦合到放大器的信号源和非反相输入端。在信号源和放大器的非反相输入之间的信号路径中设置至少一个耦合电容。为了获得相当大的噪声增益而没有这种类型的放大器电路中非常高的空闲时间的缺点，提出耦合阻抗由非线性电阻（D1，D2或D3，D4）和欧姆电阻（R3或 R4）。此外，放大器（ICI）的输出信号（S2）或由其导出的信号通过第二或第三耦合电容（C3或C4）反馈到耦合阻抗（D1，D2，R3或D3，D4，R4））。

10. 发明授权

US06803819B2 Variable gain amplifier having improved gain slope characteristic and linearity 失效
标题翻译：具有改善增益斜率特性和线性度的可变增益放大器
公开(公告)号：US06803819B2
公开(公告)日：2004-10-12
申请号：US10445804
申请日：2003-05-28
申请人： Seyeob Kim
发明人： Seyeob Kim
IPC分类号： H03F345
CPC分类号： H03G1/0023 , H03F3/45188 , H03F2203/45496 , H03F2203/45644
摘要： The present invention relates to improvement of gain slope characteristic and linearity of a variable gain amplifier. According to the present invention, a variable gain amplifier is proved, which comprises an amplification unit having first input terminal, second input terminal, first output terminal, and second output terminal, and outputs current through the first and the second output terminals according to voltages applied to the first and the second input terminals, respectively, first gain control unit having an input terminal, first output terminal, second output terminal, first control terminal, second control terminal, and comprising first and second active elements which make current flow through the first and the second output terminal according to voltages applied to the first and the second control terminals, respectively, and second gain control unit having an input terminal, first output terminal, second output terminal, first control terminal, second control terminal, and comprising third and fourth active elements which make current flow through the first and the second output terminal according to voltages applied to the first and the second control terminals, respectively, wherein amplification rates of the first and the third active elements are substantially same, each other, and amplification rates of the second and the fourth active elements are substantially same, each other, and, amplification rate of the first and the third active elements are substantially different with amplification rate of the second and the fourth active elements.
摘要翻译：本发明涉及可变增益放大器的增益斜率特性和线性度的改进。根据本发明，证明了可变增益放大器，其包括具有第一输入端，第二输入端，第一输出端和第二输出端的放大单元，并且根据电压输出通过第一和第二输出端的电流分别施加到第一和第二输入端，第一增益控制单元具有输入端，第一输出端，第二输出端，第一控制端，第二控制端，并且包括第一和第二有源元件，其使电流流经第一和第二输出端子分别根据施加到第一和第二控制端子的电压，第二增益控制单元具有输入端，第一输出端，第二输出端，第一控制端，第二控制端，以及使电流流过第一和第二输出端的第四有源元件根据施加到第一和第二控制端子的电压，其中第一和第三有源元件的放大率彼此基本相同，第二和第四有源元件的放大率基本相同，每个另外，并且第一和第三有源元件的放大率与第二和第四有源元件的放大率基本不同。

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