公开(公告)号：US5206550A

公开(公告)日：1993-04-27

申请号：US718053

申请日：1991-06-20

申请人： Aswin N. Mehta

发明人： Aswin N. Mehta

IPC分类号： H03F3/45 ,  H03F3/72 ,  H03K5/02 ,  H03K5/24

CPC分类号： H03F3/45174 ,  H03F3/45071 ,  H03F3/45085 ,  H03F3/45179 ,  H03F3/72 ,  H03K5/02 ,  H03K5/2418 ,  H03F2200/219 ,  H03F2200/285 ,  H03F2200/525 ,  H03F2203/45108 ,  H03F2203/45144 ,  H03F2203/45158 ,  H03F2203/45178 ,  H03F2203/45202 ,  H03F2203/45466 ,  H03F2203/45471 ,  H03F2203/45506 ,  H03F2203/45561 ,  H03F2203/45578 ,  H03F2203/45612 ,  H03F2203/45636 ,  H03F2203/45641 ,  H03F2203/45702

摘要： An amplifier is arranged with an actively clamped load. In a differential amplifier, a pair of emitter-coupled transistors has loads connected between the collectors and a voltage supply. Separate clamping transistors have their collector-emitter paths connected across respective ones of the loads. A clamping control circuit, responsive to an input signal, produces a variable control signal to clamp output signal swings across the loads. A similar clamping control circuit can be used with a single-ended amplifier. Such an amplifier having an actively clamped load is useful in sense amplifier circuit arrangements in semiconductor memory arrangements used in data processing systems.

摘要翻译： 放大器布置有主动夹紧的负载。 在差分放大器中，一对发射极耦合晶体管具有连接在集电极和电压源之间的负载。 单独的钳位晶体管的集电极 - 发射极路径连接在相应的负载上。 钳位控制电路响应于输入信号，产生一个可变的控制信号，以夹紧跨过负载的输出信号摆幅。 类似的钳位控制电路可以与单端放大器一起使用。 具有主动夹紧负载的这种放大器在数据处理系统中使用的半导体存储器布置中的读出放大器电路布置中是有用的。

公开(公告)号：US3946325A

公开(公告)日：1976-03-23

申请号：US486243

申请日：1974-07-05

申请人： Arthur John Leidich

发明人： Arthur John Leidich

IPC分类号： H03F1/34 ,  H03F3/45 ,  H03F3/04 ,  H03F3/68

CPC分类号： H03F3/45511 ,  H03F1/34 ,  H03F3/45085 ,  H03F2200/282 ,  H03F2200/285 ,  H03F2203/45006 ,  H03F2203/45014 ,  H03F2203/45088 ,  H03F2203/45188 ,  H03F2203/45406 ,  H03F2203/45544 ,  H03F2203/45604 ,  H03F2203/45641 ,  H03F2203/45648 ,  H03F2203/45671 ,  H03F2203/45722

摘要： A differential amplifier stage, suitable for use as the first stage in an operational amplifier with a single power supply, has the capability of its input terminals being operated over a range including one of the supply potentials. The differential amplifier stage includes a pair of emitter-coupled transistors of a first conductivity type having their base electrodes connected to input signal terminals. These transistors are each provided with an active collector load by grounded-emitter transistors of the second conductivity type connected collector-to-collector therewith. Commonmode feedback from these collector-to-collector connections to the base electrode of the grounded-emitter transistors is used to regulate the emitter-to-collector potentials of these grounded-emitter transistors to a lower value than their emitter-to-base potentials, but to a value larger enough to avoid saturation.

摘要翻译： 适用于具有单个电源的运算放大器中的第一级的差分放大器级具有其输入端子在包括一个电源电位的范围内运行的能力。 差分放大器级包括一对具有第一导电类型的发射极耦合晶体管，其基极连接到输入信号端子。 这些晶体管分别由集电极与集电体连接的第二导电类型的接地发射极晶体管分别提供有源集电极负载。 这些集电极到集电极连接到接地 - 发射极晶体管的基极的共模反馈用于将这些接地 - 发射极晶体管的发射极 - 集电极电位调节到比其发射极 - 基极电位更低的值， 而是一个足够大的值以避免饱和。

公开(公告)号：US20170359042A1

公开(公告)日：2017-12-14

申请号：US15177459

申请日：2016-06-09

申请人： KEYSIGHT TECHNOLOGIES, INC.

发明人： David Dascher

IPC分类号： H03G1/00 ,  H03F3/60 ,  H03F3/45 ,  H03F3/55

CPC分类号： H03G1/0088 ,  H03F3/4508 ,  H03F3/45085 ,  H03F3/45475 ,  H03F3/55 ,  H03F3/605 ,  H03F2200/285 ,  H03F2200/291 ,  H03F2203/45288 ,  H03F2203/45612 ,  H03G1/0023 ,  H03G3/001 ,  H03G2201/40

摘要： Distributed amplifier systems and methods are disclosed. An example distributed amplifier system includes first stage traveling wave amplifier (TWA) circuitry that is controllable to provide one of a first set of discrete gain settings. The first stage TWA circuitry includes a first input transmission line, a first output transmission line, and a first plurality of amplifiers coupled antiparallel between the first input transmission line and the first output transmission line. The first set of discrete gain settings has approximately constant logarithmic spacing.

公开(公告)号：US09702891B2

公开(公告)日：2017-07-11

申请号：US14423402

申请日：2013-08-14

申请人： Epsiline ,  Institut National Polytechnique de Toulouse

发明人： Francis Bony ,  Raphael Teysseyre

IPC分类号： G01P5/26 ,  H03F1/56 ,  H03F3/45

CPC分类号： G01P5/26 ,  H03F1/56 ,  H03F3/087 ,  H03F3/45071 ,  H03F3/45475 ,  H03F3/50 ,  H03F2200/285 ,  H03F2200/405 ,  H03F2200/42 ,  H03F2200/54 ,  H03F2200/555 ,  H03F2200/69 ,  H03F2200/72 ,  H03F2203/45051 ,  H03F2203/45112 ,  H03F2203/45528 ,  H03F2203/45544 ,  H03F2203/45594 ,  H03F2203/5036

摘要： An analogue amplification device comprises a first stage with a common base or gate transistor that receives the modulated input current on its emitter or its source and the output signal of this first stage corresponds to the signal of the collector, a second stage formed by a follower amplifier comprising a transistor with a common collector or drain setup, a third stage that comprises a transistor with a common emitter setup, and a fourth stage that is an amplifying stage with means allowing the realization of, on the one hand, an amplification, and on the other hand, a matching of impedance. The device can be applied to a laser anemometer with optical retro-injection.

公开(公告)号：US20150233961A1

公开(公告)日：2015-08-20

申请号：US14423402

申请日：2013-08-14

申请人： Epsiline ,  Institut National Polytechnique de Toulouse

发明人： Francis Bony ,  Raphael Teysseyre

IPC分类号： G01P5/26 ,  H03F3/45 ,  H03F1/56

CPC分类号： G01P5/26 ,  H03F1/56 ,  H03F3/087 ,  H03F3/45071 ,  H03F3/45475 ,  H03F3/50 ,  H03F2200/285 ,  H03F2200/405 ,  H03F2200/42 ,  H03F2200/54 ,  H03F2200/555 ,  H03F2200/69 ,  H03F2200/72 ,  H03F2203/45051 ,  H03F2203/45112 ,  H03F2203/45528 ,  H03F2203/45544 ,  H03F2203/45594 ,  H03F2203/5036

摘要： An analogue amplification device comprises a first stage with a common base or gate transistor that receives the modulated input current on its emitter or its source and the output signal of this first stage corresponds to the signal of the collector, a second stage formed by a follower amplifier comprising a transistor with a common collector or drain setup, a third stage that comprises a transistor with a common emitter setup, and a fourth stage that is an amplifying stage with means allowing the realization of, on the one hand, an amplification, and on the other hand, a matching of impedance. The device can be applied to a laser anemometer with optical retro-injection.

摘要翻译： 模拟放大装置包括具有公共基极或栅极晶体管的第一级，其接收其发射极或其源极上的调制输入电流，并且该第一级的输出信号对应于集电极的信号，由跟随器形成的第二级 放大器，包括具有公共集电极或漏极设置的晶体管，第三级，其包括具有共同发射极设置的晶体管，以及第四级，其是具有允许一方面实现放大的装置的放大级，以及 另一方面，阻抗匹配。 该装置可应用于具有光学反射注入的激光风速计。

公开(公告)号：US5404333A

公开(公告)日：1995-04-04

申请号：US36583

申请日：1993-03-24

申请人： Aswin N. Mehta

发明人： Aswin N. Mehta

IPC分类号： H03F3/45 ,  H03F3/72 ,  H03K5/02 ,  H03K5/24 ,  G11C7/00 ,  G01R19/00

CPC分类号： H03F3/45174 ,  H03F3/45071 ,  H03F3/45085 ,  H03F3/45179 ,  H03F3/72 ,  H03K5/02 ,  H03K5/2418 ,  H03F2200/219 ,  H03F2200/285 ,  H03F2200/525 ,  H03F2203/45108 ,  H03F2203/45144 ,  H03F2203/45158 ,  H03F2203/45178 ,  H03F2203/45202 ,  H03F2203/45466 ,  H03F2203/45471 ,  H03F2203/45506 ,  H03F2203/45561 ,  H03F2203/45578 ,  H03F2203/45612 ,  H03F2203/45636 ,  H03F2203/45641 ,  H03F2203/45702

摘要： An amplifier is arranged with an actively clamped load. In a differential amplifier, a pair of emitter-coupled transistors has loads connected between the collectors and a voltage supply. Separate clamping transistors have their collector-emitter paths connected across respective ones of the loads. A clamping control circuit, responsive to an input signal, produces a variable control signal to clamp output signal swings across the loads. A similar clamping control circuit can be used with a single-ended amplifier. Such an amplifier having an actively clamped load is useful in sense amplifier circuit arrangements in semiconductor memory arrangements used in data processing systems.

摘要翻译： 放大器布置有主动夹紧的负载。 在差分放大器中，一对发射极耦合晶体管具有连接在集电极和电压源之间的负载。 单独的钳位晶体管的集电极 - 发射极路径连接在相应的负载上。 钳位控制电路响应于输入信号，产生一个可变的控制信号，以夹紧跨过负载的输出信号摆幅。 类似的钳位控制电路可以与单端放大器一起使用。 具有主动夹紧负载的这种放大器在数据处理系统中使用的半导体存储器布置中的读出放大器电路布置中是有用的。

公开(公告)号：US4769616A

公开(公告)日：1988-09-06

申请号：US945416

申请日：1986-12-22

申请人： Stefan Barbu

发明人： Stefan Barbu

IPC分类号： H03F3/189 ,  H03F3/19 ,  H03F3/45 ,  H03G11/00 ,  H03G11/06

CPC分类号： H03F3/45071 ,  H03F3/19 ,  H03F2200/282 ,  H03F2200/285 ,  H03F2203/45022 ,  H03F2203/45051 ,  H03F2203/45176 ,  H03F2203/45202 ,  H03F2203/45221 ,  H03F2203/45274 ,  H03F2203/45458 ,  H03F2203/45464 ,  H03F2203/45471

摘要： A high-frequency differential-amplifier stage. The collectors of the transistors (T.sub.1, T.sub.2) are connected to the emitters of two transistors (T.sub.3, T.sub.4) coupled to provide feedback between their collectors and their bases and which are biased by means of resistors (R.sub.1, R.sub.2). This input stage forms a resonant circuit. Two current sources (R.sub.32, T.sub.32, R.sub.31, T.sub.31) improve the operation of this stage in the saturated mode.

摘要翻译： 高频差分放大器级。 晶体管（T1，T2）的集电极连接到两个晶体管（T3，T4）的发射极，这两个晶体管（T3，T4）耦合以提供它们的集电极和它们的基极之间的反馈，并且通过电阻（R1，R2）偏置。 该输入级形成谐振电路。 两个电流源（R32，T32，R31，T31）改善了饱和模式下该阶段的工作。