公开(公告)号：US08760199B2

公开(公告)日：2014-06-24

申请号：US13446397

申请日：2012-04-13

申请人： Sang-Yeon Byeon

发明人： Sang-Yeon Byeon

IPC分类号： H03B1/00 ,  H03K19/003

CPC分类号： H03K19/00361 ,  G11C7/1084 ,  H03F3/3022 ,  H03F2203/30042 ,  H03F2203/30051 ,  H03F2203/30057

摘要： A buffer circuit includes an amplification unit configured to amplify and output a difference between an input signal and a reference voltage; and a driver configured to drive an output node in response to the output of the amplification unit and be controlled in at least one of a pull-up driving strength and a pull-down driving strength at the output node in response to the reference voltage.

摘要翻译： 缓冲电路包括：放大单元，被配置为放大和输出输入信号和参考电压之间的差; 以及驱动器，被配置为响应于放大单元的输出来驱动输出节点，并且响应于参考电压而在输出节点处被控制为上拉驱动强度和下拉驱动强度中的至少一个。

公开(公告)号：US20060279360A1

公开(公告)日：2006-12-14

申请号：US11238064

申请日：2005-09-29

申请人： Hisao Shigematsu

发明人： Hisao Shigematsu

IPC分类号： H03F3/60

CPC分类号： H03F3/604 ,  H03F3/3001 ,  H03F3/3022 ,  H03F3/3037 ,  H03F3/3042 ,  H03F3/3086 ,  H03F3/607 ,  H03F2203/30051 ,  H03F2203/30057

摘要： In order to allow to make compact a distributed amplifier by dispensing with any choke coil and reduce its cost, the distributed amplifier is configured such that it comprises an input side transmission line, an output side transmission line, and plural amplifier circuits connected to the input side transmission line and the output side transmission line, wherein push-pull amplifier circuits are employed as the amplifier circuits.

摘要翻译： 为了通过分配任何扼流线圈来制造紧凑的分布式放大器并降低其成本，分布式放大器被配置为使得它包括输入侧传输线，输出侧传输线和连接到输入端的多个放大器电路 侧传输线和输出侧传输线，其中使用推挽放大器电路作为放大器电路。

公开(公告)号：US20020121885A1

公开(公告)日：2002-09-05

申请号：US09797511

申请日：2001-03-01

发明人： Michael F. Taylor ,  Teck-Shiun Lim

IPC分类号： G05F001/40

CPC分类号： H03F3/45475 ,  G05F1/461 ,  H03F3/303 ,  H03F2200/261 ,  H03F2203/30057 ,  H03F2203/45138

摘要： A high-accuracy linear amplifier is disclosed for sinking or sourcing current to or from a load. The linear amplifier includes input circuitry for receiving a predetermined input signal and rectifier circuitry. The rectifier circuitry is disposed at the output of the input circuitry and is operative in response to the input signal to generate a source/sink command signal. Output stage circuitry is coupled to the rectifier circuitry and includes a current sink transistor and a current source transistor. The output stage circuitry is responsive to the command signal to sink or source current through one of the respective transistors. The amplifier further includes feedback circuitry coupled between the output of the output stage circuitry and the input circuitry to provide an error signal for modifying the input signal. Bias circuitry maintains the non-conducting transistor in an on state during the sourcing or sinking of current.

摘要翻译： 公开了一种高精度线性放大器，用于将电流吸入或从负载中提取电流。 线性放大器包括用于接收预定输入信号和整流器电路的输入电路。 整流器电路设置在输入电路的输出处，并且响应于输入信号而工作以产生源/宿指令信号。 输出级电路耦合到整流器电路并且包括电流宿晶体管和电流源晶体管。 输出级电路响应于命令信号以通过相应晶体管之一吸收或源极电流。 放大器还包括耦合在输出级电路的输出和输入电路之间的反馈电路，以提供用于修改输入信号的误差信号。 偏置电路在电流的采集或吸收期间将非导通晶体管保持在导通状态。

公开(公告)号：US5087836A

公开(公告)日：1992-02-11

申请号：US561499

申请日：1990-07-30

申请人： Stewart S. Taylor

发明人： Stewart S. Taylor

IPC分类号： H03F3/30

CPC分类号： H03F3/3001 ,  H03F2203/30057

摘要： A class AB amplifier comprises a pull-up structure of an E-FET and D-FET connected in parallel and a pull-down structure of an E-FET and D-FET connected in parallel. Use of the E-FETs allows a high peak current to be achieved without increasing the quiescent current to an undesirable level. The pull-up structure and the pull-down structure are driven by currents that are out-of-phase, and accordingly linear push-pull operation is provided.

摘要翻译： AB类放大器包括并联连接的E-FET和D-FET的上拉结构以及并联连接的E-FET和D-FET的下拉结构。 使用E-FET可以实现高峰值电流，而不会将静态电流增加到不期望的水平。 上拉结构和下拉结构由不相位的电流驱动，因此提供线性推挽操作。

公开(公告)号：US5047732A

公开(公告)日：1991-09-10

申请号：US465253

申请日：1990-04-03

申请人： Minoru Tanaami ,  Michiko Naito

发明人： Minoru Tanaami ,  Michiko Naito

IPC分类号： H03F1/48 ,  H03F1/32 ,  H03F1/34 ,  H03F3/21 ,  H03F3/30 ,  H03F3/343 ,  H03F3/68

CPC分类号： H03F1/34 ,  H03F1/32 ,  H03F3/211 ,  H03F3/3066 ,  H03F3/343 ,  H03F2203/30006 ,  H03F2203/30057

摘要： A wide-band amplifier using a plurality of transistors used in transmission, voice, applications video, high-vision in CATV, etc., for example. In the wide band amplifier, an input signal is applied in common across the respective bases and corresponding emitters of the plurality of transistors and the respective output currents are withdrawn from the transistor collectors. Thus, the output currents of the transistors are reduced, possible distortions in the outputs are greatly reduced, the upper operating frequency limit (f.sub.T) is increased to about 3 GHz, and possible distortions in the output currents of the transistors are cancelled by inserting in the input circuit a transistor having the same characteristic as the first mentioned transistors. The amplifier includes the plurality of transistors connected in parallel, a constant-current circuit as an input source for the transistors, and at least one diode having the same characteristic as the transistors and connected in parallel in the input circuit of the amplifier. A voltage drop across a series connected circuit of a transistor (Tr.sub.D) and a resistor (R.sub.EO) due to the current flowing through the series connected circuit varies depending on a non-linear portion of the base-emitter characteristic of the transistor (Tr.sub.D) compared to a similar amplifier without such a transistor (Tr.sub.D). Therefore, a wide-band high-power amplifier is obtained without employing a feedback type configuration. In the wide band amplifier, distortions are small and eliminated, and signals of high frequencies are amplified with high quality and without oscillation.

公开(公告)号：US07804357B2

公开(公告)日：2010-09-28

申请号：US11238064

申请日：2005-09-29

申请人： Hisao Shigematsu

发明人： Hisao Shigematsu

IPC分类号： H03F3/26

CPC分类号： H03F3/604 ,  H03F3/3001 ,  H03F3/3022 ,  H03F3/3037 ,  H03F3/3042 ,  H03F3/3086 ,  H03F3/607 ,  H03F2203/30051 ,  H03F2203/30057

摘要： In order to allow to make compact a distributed amplifier by dispensing with any choke coil and reduce its cost, the distributed amplifier is configured such that it comprises an input side transmission line, an output side transmission line, and plural amplifier circuits connected to the input side transmission line and the output side transmission line, wherein push-pull amplifier circuits are employed as the amplifier circuits.

摘要翻译： 为了通过分配任何扼流线圈来制造紧凑的分布式放大器并降低其成本，分布式放大器被配置为使得它包括输入侧传输线，输出侧传输线和连接到输入端的多个放大器电路 侧传输线和输出侧传输线，其中使用推挽放大器电路作为放大器电路。

公开(公告)号：US07164298B2

公开(公告)日：2007-01-16

申请号：US10707354

申请日：2003-12-08

申请人： Kuang-Feng Sung

发明人： Kuang-Feng Sung

IPC分类号： H03K3/00

CPC分类号： H03F3/3028 ,  H03F2203/30057

摘要： A slew rate enhancement circuit of an operational amplifier including a main output stage, a monitoring stage and an assistant output stage is provided. An input voltage of the operational amplifier is detected by the main output stage to decide whether to output a main current to the load or not. The main output stage also generators a first push signal and a first pull signal according to the input voltage, and thereafter the second push signal and second pull signal are level shifted by the monitoring stage. A second push signal and second pull signal will turn on or turn off the assistant output stage to decided whether to output an assistant current to the load or not. Specially, the improved compact circuit does not increase state operating current for the original operational amplifier and occupy a small chip area.

摘要翻译： 提供了包括主输出级，监控级和辅助输出级的运算放大器的转换速率增强电路。 由主输出级检测运算放大器的输入电压，以决定是否向负载输出主电流。 主输出级还根据输入电压产生第一推信号和第一拉信号，此后第二推信号和第二拉信号被监控级电平移位。 第二推挽信号和第二拉信号将导通或关闭辅助输出级，以决定是否向负载输出辅助电流。 特别地，改进的紧凑型电路不会增加原始运算放大器的状态工作电流并占用小的芯片面积。

公开(公告)号：US20040178843A1

公开(公告)日：2004-09-16

申请号：US10707354

申请日：2003-12-08

发明人： Kuang-Feng Sung

IPC分类号： G05F001/10

CPC分类号： H03F3/3028 ,  H03F2203/30057

摘要： A slew rate enhancement circuit of an operational amplifier including a main output stage, a monitoring stage and an assistant output stage is provided. The input voltage of the operational amplifier is detected by the main output stage to decide for outputting a main current to the load or not. The main output stage also generates a push signal and a pull signal according to the input voltage, and thereafter the push signal and pull signal are decayed by the monitoring stage. The decayed push signal and decayed pull signal will turn on or turn off the assistant output stage to decided for outputting an assistant current to the load or not. Specially, the improved circuit is compact, does not increase static operating current for the original operational amplifier and occupies small chip area.

摘要翻译： 提供了包括主输出级，监控级和辅助输出级的运算放大器的转换速率增强电路。 运算放大器的输入电压由主输出级检测，以决定是否向负载输出主电流。 主输出级还根据输入电压产生推压信号和拉信号，其后推信号和拉信号被监控级衰减。 衰减的推挽信号和衰减的拉扯信号将导通或关闭辅助输出级，以决定将辅助电流输出到负载。 特别地，改进的电路紧凑，不会增加原始运算放大器的静态工作电流，占用小芯片面积。

公开(公告)号：US20040145413A1

公开(公告)日：2004-07-29

申请号：US10757400

申请日：2004-01-15

发明人： Hong-Shik Moon

IPC分类号： H03F003/45

CPC分类号： H03F3/3023 ,  H03F3/3055 ,  H03F2203/30057

摘要： A CMOS (Complementary Metal Oxide Semiconductor) operational amplifier includes: an amplifying unit for differentially amplifying signals inputted to an inverting input terminal and non-inverting input terminal to reduce an input offset voltage and outputting the amplified signal to an output terminal; and a slew enhancing unit for increasing a slew rate of the amplified signal outputted to the output terminal on the basis of the input voltage value of the inverting input terminal and the input voltage value of the non-inverting input terminal.

摘要翻译： CMOS（互补金属氧化物半导体）运算放大器包括：放大单元，用于差分放大输入到反相输入端和非反相输入端的信号，以减小输入偏移电压并将放大的信号输出到输出端; 以及基于反相输入端子的输入电压值和非反相输入端子的输入电压值来提高输出到输出端子的放大信号的转换速率的转换增强单元。

公开(公告)号：US4959623A

公开(公告)日：1990-09-25

申请号：US382162

申请日：1989-07-19

申请人： John M. Khoury

发明人： John M. Khoury

IPC分类号： H03F3/30

CPC分类号： H03F3/3001 ,  H03F2203/30057 ,  H03F2203/30078 ,  H03F2203/30096 ,  H03F2203/30111 ,  H03F2203/30129

摘要： A low impedance class AB buffer stage in complementary transistor technology has its quiescient current stabilized and its operation thereby made more reliable by means of suitable error op-amps that are supplied with transistor feedback loops which are connected to the stage's output terminal through resistors. In addition, for full rail-to-rail output voltage capability, transistor switching devices are added to turn off current through either of the resistors when the output voltage approaches the voltage of either power rail, and also a pair of serially rail-to-rail connected transistor is connected in parallel with the feedback loops.