公开(公告)号：US20120086509A1

公开(公告)日：2012-04-12

申请号：US12916404

申请日：2010-10-29

申请人： Martijn Fridus Snoeij ,  Sergey Alenin ,  Margarita Alenina

发明人： Martijn Fridus Snoeij ,  Sergey Alenin ,  Margarita Alenina

IPC分类号： H03F3/45

CPC分类号： H03F3/45112 ,  H03F2203/45248 ,  H03F2203/45466

摘要： Various apparatuses, methods and systems for boosting an amplifier slew rate are disclosed herein. For example, some embodiments of the present invention provide an apparatus including a pair of inputs connected to a pair of differential input devices in an amplifier, a current source, a first current path connected to the current source, a second current path connected to the current source and to the pair of differential input devices, a switch in the first current path, and a voltage difference signal connected between the pair of inputs and the switch. The voltage difference signal represents the voltage difference between the pair of inputs. The conductance of the switch is inversely proportional to the voltage difference signal.

摘要翻译： 本文公开了用于提高放大器转换速率的各种装置，方法和系统。 例如，本发明的一些实施例提供了一种装置，其包括连接到放大器中的一对差分输入装置的一对输入端，电流源，连接到电流源的第一电流路径，连接到电流源的第二电流路径 电流源和一对差分输入装置，第一电流路径中的开关和连接在该对输入和开关之间的电压差信号。 电压差信号表示该对输入之间的电压差。 开关的电导与电压差信号成反比。

公开(公告)号：US08390379B2

公开(公告)日：2013-03-05

申请号：US12916404

申请日：2010-10-29

申请人： Martijn Fridus Snoeij ,  Margarita Alenina

发明人： Martijn Fridus Snoeij ,  Sergey Alenin

IPC分类号： H03F3/45

CPC分类号： H03F3/45112 ,  H03F2203/45248 ,  H03F2203/45466

摘要： Various apparatuses, methods and systems for boosting an amplifier slew rate are disclosed herein. For example, some embodiments of the present invention provide an apparatus including a pair of inputs connected to a pair of differential input devices in an amplifier, a current source, a first current path connected to the current source, a second current path connected to the current source and to the pair of differential input devices, a switch in the first current path, and a voltage difference signal connected between the pair of inputs and the switch. The voltage difference signal represents the voltage difference between the pair of inputs. The conductance of the switch is inversely proportional to the voltage difference signal.

摘要翻译： 本文公开了用于提高放大器转换速率的各种装置，方法和系统。 例如，本发明的一些实施例提供了一种装置，其包括连接到放大器中的一对差分输入装置的一对输入端，电流源，连接到电流源的第一电流路径，连接到电流源的第二电流路径 电流源和一对差分输入装置，第一电流路径中的开关，以及连接在该对输入和开关之间的电压差信号。 电压差信号表示该对输入之间的电压差。 开关的电导与电压差信号成反比。

公开(公告)号：US07394316B1

公开(公告)日：2008-07-01

申请号：US11655708

申请日：2007-01-19

申请人： Sergey Alenin ,  Henry Surtihadi

发明人： Sergey Alenin ,  Henry Surtihadi

IPC分类号： H03F3/26

CPC分类号： H03F3/26

摘要： An amplifying circuit which may be useful in a diamond buffer amplifier or operational amplifier includes an input transistor including an emitter, a collector, and a base coupled to receive an input voltage. An adjustable current source circuit is coupled between a first reference voltage and the emitter of the input transistor. A current source is coupled between a second reference voltage and the collector of the input transistor. An isolation resistor has a first terminal coupled to an output terminal of the adjustable current source circuit and a second terminal coupled to the emitter of the input transistor. A current follower circuit is coupled between the collector of the input transistor and an input terminal of the adjustable current source circuit. A feed-forward capacitor is coupled between the collector of the input transistor and the first terminal of the isolation resistor.

摘要翻译： 可用于金刚石缓冲放大器或运算放大器的放大电路包括输入晶体管，其包括耦合以接收输入电压的发射极，集电极和基极。 可调电流源电路耦合在第一参考电压和输入晶体管的发射极之间。 电流源耦合在第二参考电压和输入晶体管的集电极之间。 隔离电阻器具有耦合到可调电流源电路的输出端的第一端子和耦合到输入晶体管的发射极的第二端子。 电流跟随器电路耦合在输入晶体管的集电极和可调电流源电路的输入端之间。 前馈电容器耦合在输入晶体管的集电极和隔离电阻的第一端之间。

公开(公告)号：US07078973B2

公开(公告)日：2006-07-18

申请号：US10960182

申请日：2004-10-07

申请人： Sergey Alenin

发明人： Sergey Alenin

IPC分类号： H03F3/18

CPC分类号： H03F3/3066

摘要： A bipolar rail-to-rail class-AB output stage that provides improved AC performance in low voltage applications. The bipolar output stage includes an input buffer stage, first and second complementary common emitter stages, and first and second control circuits biased and configured to assure class-AB operation of the first and second common emitter stages, respectively. The input of the bipolar output stage is applied to the input buffer stage, and the output of the bipolar output stage is provided by the second common emitter stage. The combination of the first common emitter stage and the first AB-control circuit operates as a current booster stage for the second common emitter stage, thereby obviating the need for a large power supply.

摘要翻译： 双极轨到轨AB类输出级，可在低电压应用中提供更好的交流性能。 双极性输出级包括输入缓冲级，第一和第二互补公共发射极级，以及偏置和配置为分别确保第一和第二公共发射极级的AB类操作的第一和第二控制电路。 双极输出级的输入被施加到输入缓冲级，双极输出级的输出由第二公共发射极级提供。 第一公共发射极级和第一AB控制电路的组合作为用于第二公共发射极级的电流升压级，从而避免需要大的电源。

公开(公告)号：US20070053216A1

公开(公告)日：2007-03-08

申请号：US11219026

申请日：2005-09-02

申请人： Sergey Alenin

发明人： Sergey Alenin

IPC分类号： H02M3/18

CPC分类号： H02M3/07 ,  H02M2003/077

摘要： A low noise charge pump circuit includes a first terminal of a first flying capacitor selectively coupled to a first voltage during a first recharging phase and a second terminal of the first flying capacitor selectively coupled to a second voltage during the first recharging phase. The second terminal of the first flying capacitor is coupled to a precharge control circuit during a first parasitic capacitance precharging phase that occurs after the first recharging phase to cause the voltage of the first terminal of the first flying capacitor to equal an output voltage. The first terminal of the first flying capacitor is coupled to an output conductor conducting the output voltage during a first discharging phase that occurs after the first parasitic capacitance precharging phase. The second terminal of the first flying capacitor is coupled to a discharge control circuit which increases the voltage of the second terminal of the first flying capacitor during the first discharging phase until the output voltage is equal to a regulated value.

摘要翻译： 低噪声电荷泵电路包括在第一充电阶段期间选​​择性地耦合到第一电压的第一浮动电容器的第一端子和在第一充电阶段期间选​​择性地耦合到第二电压的第一浮动电容器的第二端子。 第一飞秒电容器的第二端子在第一寄生电容预充电阶段期间耦合到预充电控制电路，该第一寄生电容预充电相位在第一充电阶段之后发生，以使第一飞跨电容器的第一端子的电压等于输出电压。 在第一寄生电容预充电阶段之后发生的第一放电阶段期间，第一飞秒电容器的第一端耦合到输出导体，该输出导体传导输出电压。 第一飞溅电容器的第二端子耦合到放电控制电路，其在第一放电阶段期间增加第一飞跨电容器的第二端子的电压，直到输出电压等于调节值。

公开(公告)号：US20060261884A1

公开(公告)日：2006-11-23

申请号：US11134122

申请日：2005-05-20

申请人： David Gammie ,  Sergey Alenin

发明人： David Gammie ,  Sergey Alenin

IPC分类号： H03F1/02

CPC分类号： H03F3/45192 ,  H03F3/45475 ,  H03F3/45973 ,  H03F2200/261 ,  H03F2203/45521

摘要： An amplifier circuit includes first (7A) and second (7B) operational amplifiers connected in a generally parallel configuration, each with inputs coupled through the same pair of matched input resistors which receive a differential input signal that may have both a positive and negative common mode range. An offset adjustment amplifier (17) receives a differential error signal representative of the difference between offset voltages of the first and second operational amplifiers and generates offset adjustment signals that are applied to input stages of the first and second operational amplifiers to adjust their respective offset voltages so as to equalize them. With the offset voltages equalized, the first and second operational amplifiers operate seamlessly as a common mode component of the differential input signal undergoes a transition from its positive to its negative range, so as to avoid inaccuracies and abrupt changes in an output voltage during the transition, the output voltage being produced in response to outputs of both first and second operational amplifiers.

摘要翻译： 放大器电路包括以大致平行配置连接的第一（7A）和第二（7B）运算放大器，每个具有通过同一对匹配输入电阻耦合的输入，其接收差分输入信号，所述差分输入信号可以具有正负两者 共模范围 偏移调整放大器（17）接收表示第一和第二运算放大器的偏移电压之差的差分误差信号，并产生施加到第一和第二运算放大器的输入级的偏移调整信号，以调整其偏移电压 以便平衡它们。 在偏移电压相等的情况下，第一和第二运算放大器无缝运行，因为差分输入信号的共模分量经历了从其正极到负极的转变，从而避免了转换期间输出电压的不准确和突然变化 ，输出电压是响应于第一和第二运算放大器的输出产生的。

公开(公告)号：US07102440B2

公开(公告)日：2006-09-05

申请号：US10856140

申请日：2004-05-28

申请人： Paul G. Damitio ,  Sergey Alenin

发明人： Paul G. Damitio ,  Sergey Alenin

IPC分类号： H03F3/26

CPC分类号： H03F3/3432 ,  H03F1/02 ,  H03F1/42 ,  H03F3/3069

摘要： A high output current wideband output stage/buffer amplifier that has reduced quiescent current requirements. The output stage/buffer amplifier includes a diamond follower circuit having a pair of complementary output load-driving bipolar junction transistors (BJTs), a pair of pre-driver BJTs, and a plurality of current boost BJTs. As the base current of one of the driver transistors starts to increase in response to an increasing load current, the current through a corresponding pre-driver transistor decreases, thereby increasing the collector current of a corresponding boost transistor. The increased collector current of the boost transistor is fed back to a current mirror, causing a concomitant increase in the base current of the driver transistor.

摘要翻译： 具有降低静态电流要求的高输出电流宽带输出级/缓冲放大器。 输出级/缓冲放大器包括具有一对互补输出负载驱动双极结晶体管（BJT），一对预驱动器BJT和多个电流升压BJT的金刚石跟随器电路。 随着一个驱动晶体管的基极电流响应于负载电流的增加而开始增加，相应的预驱动晶体管的电流减小，从而增加对应的升压晶体管的集电极电流。 升压晶体管的集电极电流的增加被反馈到电流镜，引起驱动晶体管的基极电流的伴随增加。

公开(公告)号：US20070229156A1

公开(公告)日：2007-10-04

申请号：US11396869

申请日：2006-04-03

申请人： Sergey Alenin ,  Henry Surtihadi

发明人： Sergey Alenin ,  Henry Surtihadi

IPC分类号： H03F3/45

CPC分类号： H03F3/45291 ,  H03F3/45896 ,  H03F2203/45212 ,  H03F2203/45302 ,  H03F2203/45431 ,  H03F2203/45512 ,  H03F2203/45652

摘要： An amplifier circuit includes an pair of input transistors, the drains of which are connected to emitters of first and second cascode transistors. First and second controlled current sources are connected to the emitters of the first and second cascode transistors, respectively, and third and fourth controlled current sources are connected to the collectors thereof. A bias circuit controls the 4 controlled current sources in response to the emitter voltage of a pair of input transistors of an output stage the inputs of which are connected to the drains of the first and second cascode transistors.

摘要翻译： 放大器电路包括一对输入晶体管，其输出端连接到第一和第二共源共栅晶体管的发射极。 第一和第二受控电流源分别连接到第一和第二共源共栅晶体管的发射极，第三和第四受控电流源连接到其集电极。 偏置电路响应于输入级的一对输入晶体管的发射极电压控制4个受控电流源，其输入端连接到第一和第二共源共栅晶体管的漏极。

公开(公告)号：US20060267685A1

公开(公告)日：2006-11-30

申请号：US11136203

申请日：2005-05-24

申请人： Sergey Alenin ,  Henry Surtihadi

发明人： Sergey Alenin ,  Henry Surtihadi

IPC分类号： H03F3/45

CPC分类号： H03F3/45085 ,  H03F1/48 ,  H03F2203/45014 ,  H03F2203/45086 ,  H03F2203/45248 ,  H03F2203/45431 ,  H03F2203/45441 ,  H03F2203/45632 ,  H03F2203/45642 ,  H03F2203/45646 ,  H03F2203/45652 ,  H03F2203/45712

摘要： An amplifier (10) includes a first stage (4) including differentially coupled first (Q1) and second (Q2) input transistors and a controlled active load circuit (6). A second stage (8) includes differentially coupled third (Q5) and fourth (Q6) input transistors and a load circuit (Q7,8). A first output (2A) of the first stage (4) is coupled to a first input of the second stage (8), a second output (2B) of the first stage (4) being coupled to a second input of the second stage (8). A common mode feedback amplifier (12) has an input coupled to receive a common mode signal (3) from the second stage (8) for producing an amplified common mode signal (9) on a control input of the controlled active load circuit (6) to provide fast settling of an output (Vout) of the second stage without substantially increasing amplifier noise.

摘要翻译： 放大器（10）包括包括差分耦合的第一（Q 1）和第二（Q 2）输入晶体管和受控有源负载电路（6）的第一级（4）。 第二级（8）包括差分耦合的第三（Q 5）和第四（Q 6）输入晶体管和负载电路（Q 7,8）。 第一级（4）的第一输出（2A）耦合到第二级（8）的第一输入端，第一级（4）的第二输出（2B）耦合到第二级 第二阶段（8）。 共模反馈放大器（12）具有耦合以从第二级（8）接收共模信号（3）的输入端，用于在受控有源负载电路（6）的控制输入端产生放大的共模信号（9） ）以提供第二级的输出（Vout）的快速建立，而不会基本上增加放大器噪声。

公开(公告)号：US20060077008A1

公开(公告)日：2006-04-13

申请号：US10960182

申请日：2004-10-07

申请人： Sergey Alenin

发明人： Sergey Alenin

IPC分类号： H03F3/26

CPC分类号： H03F3/3066

摘要： A bipolar rail-to-rail class-AB output stage that provides improved AC performance in low voltage applications. The bipolar output stage includes an input buffer stage, first and second complementary common emitter stages, and first and second control circuits biased and configured to assure class-AB operation of the first and second common emitter stages, respectively. The input of the bipolar output stage is applied to the input buffer stage, and the output of the bipolar output stage is provided by the second common emitter stage. The combination of the first common emitter stage and the first AB-control circuit operates as a current booster stage for the second common emitter stage, thereby obviating the need for a large power supply.