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公开(公告)号：US4740766A
公开(公告)日：1988-04-26
申请号：US92906
申请日：1987-09-04
申请人： Arthur J. Metz
发明人： Arthur J. Metz
IPC分类号： G05F3/22
CPC分类号： G05F3/222
摘要： A precision current generator provides an output current responsive to a reference supply voltage. The current generator comprises a voltage generator which drives the input to a buffer amplifier. The buffer amplifier output drives the bases of multiple output transistors, the collectors of which form the current outputs. The output current is not dependent upon transistor beta, junction voltage, temperature or supply voltage. The all NPN design enables the current generator to track the reference voltage at high frequencies without peaking or ringing of the output current and without voltage coupling between output devices.
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公开(公告)号：US4322688A
公开(公告)日：1982-03-30
申请号：US083873
申请日：1979-10-11
CPC分类号： H03F3/45103 , H03F1/3211
摘要： The cascode feed forward amplifier is modified to correct alpha-induced error. A pair of resistors are serially disposed between the bases of a pair of common-base amplifiers to generate an error voltage proportional to the input signal. The error voltage is applied to the correction amplifier to provide an appropriate correction current.
摘要翻译： 共源共栅前馈放大器被修改以校正α引起的误差。 一对电阻器串联地布置在一对公共基极放大器的基极之间，以产生与输入信号成比例的误差电压。 误差电压被施加到校正放大器以提供适当的校正电流。
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公开(公告)号：US4797572A
公开(公告)日：1989-01-10
申请号：US6816
申请日：1987-01-21
申请人： Arthur J. Metz
发明人： Arthur J. Metz
CPC分类号： G01R13/32 , G01R13/345
摘要： A trigger re-synchronization circuit providing reduced trigger gate jitter for use in a high speed display device such as an oscilloscope or digitizer. The trigger re-synchronization circuit is cascadable.
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公开(公告)号：US4499386A
公开(公告)日：1985-02-12
申请号：US444764
申请日：1982-11-26
CPC分类号： G01R13/32
摘要： A trigger circuit including arm and trigger comparators which are responsive to the push-pull output from a differential amplifier but insensitive to its common mode component. A controllable hysteresis insertion circuit is also included in the circuit for noise rejection and sensitivity control purposes.
摘要翻译： 包括臂和触发比较器的触发电路，其响应于来自差分放大器的推挽输出，但对其共模模式不敏感。 用于噪声抑制和灵敏度控制的电路中还包括一个可控滞后插入电路。
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公开(公告)号：US4491803A
公开(公告)日：1985-01-01
申请号：US444768
申请日：1982-11-26
CPC分类号： H03F3/45197 , H03F1/3211 , H03F3/45098 , H03G11/002
摘要： A current-limiting circuit for a differential amplifier includes a voltage generator which is switched in parallel with a signal-current-generating impedance connected between the emitters of the differential amplifier transistors whenever an input signal exceeds the voltage of the voltage generator. A practical embodiment for limiting the current in either direction for opposite-polarity input signals includes a pair of voltage generators cross-coupled from a respective differential amplifier transistor base to the opposite transistor emitter via transistor switches.
摘要翻译： 用于差分放大器的限流电路包括电压发生器，每当输入信号超过电压发生器的电压时，电压发生器与连接在差分放大器晶体管的发射极之间的信号电流产生阻抗并联开关。 用于限制用于反极性输入信号的任一方向上的电流的实际实施例包括通过晶体管开关从相应的差分放大器晶体管基极交叉耦合到相对的晶体管发射极的一对电压发生器。
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公开(公告)号：US4340866A
公开(公告)日：1982-07-20
申请号：US75779
申请日：1979-09-17
申请人： Arthur J. Metz
发明人： Arthur J. Metz
CPC分类号： H03F3/45197 , H03F1/3211 , H03F3/45071
摘要： A linear wideband differential amplifier includes a variable gain stage comprising two cross-coupled differential amplifiers and differential current source to compensate for thermal distortion, to minimize transient response distortion, and to eliminate signal attenuation at the center gain setting.
摘要翻译： 线性宽带差分放大器包括可变增益级，包括两个交叉耦合差分放大器和差分电流源，以补偿热失真，最小化瞬态响应失真，并消除中心增益设置处的信号衰减。
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7.发明授权公开(公告)号：US06642741B2
公开(公告)日：2003-11-04
申请号：US10015488
申请日：2001-12-12
IPC分类号： H03K19003
CPC分类号： H04L25/0298
摘要： An integrated circuit includes a termination for a transmission line having a predetermined characteristic impedance. The termination includes a controllable impedance circuit, including a multiplier, coupled to the transmission line. A reference impedance, placed external to the integrated circuit, has an impedance related to the characteristic impedance of the transmission line. A control circuit is coupled between the reference impedance and the controllable impedance circuit, and conditions the controllable impedance circuit to have the characteristic impedance responsive to the reference impedance
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公开(公告)号：US5640127A
公开(公告)日：1997-06-17
申请号：US554692
申请日：1995-11-07
申请人： Arthur J. Metz
发明人： Arthur J. Metz
CPC分类号： H03F1/52
摘要： A high bandwidth amplifier circuit with input protection is achieved by providing a signal limiting diode circuit in the path to the positive input of the amplifier and a cross-over signal feed path for coupling a portion of the input signal from the input signal source side of the signal limiting diode circuit to the negative input of the amplifier. To maximize the overall circuit bandwidth and minimize VSWR and noise, the cross-over signal feed path is designed to couple over to the negative input of the amplifier a signal that has at a higher-end of the bandwidth range an increasing amplitude and increasingly leading phase relationship relative to the amplitude limited version of the input signal being coupled to the positive input of the amplifier. In a desirable embodiment, most of the circuitry is contained on an integrated circuit and bond wires needed for coupling serve as inductors and tune the circuitry.
摘要翻译： 具有输入保护的高带宽放大器电路通过在放大器的正输入端的路径中提供信号限制二极管电路和交叉信号馈送路径来实现，该交叉信号馈送路径用于将来自输入信号源侧的输入信号的一部分 信号限制二极管电路到放大器的负输入。 为了最大化总体电路带宽并最小化VSWR和噪声，交叉信号馈送路径被设计为耦合到放大器的负输入，该信号在带宽范围的较高端处具有增加的幅度和越来越多的引导 相位相对于耦合到放大器的正输入的输入信号的幅度限制版本。 在期望的实施例中，大多数电路被包含在集成电路上，并且耦合所需的接合线用作电感器并调谐电路。
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公开(公告)号：US4659945A
公开(公告)日：1987-04-21
申请号：US718625
申请日：1985-04-01
申请人： Arthur J. Metz
发明人： Arthur J. Metz
CPC分类号： G11C27/024
摘要： A high frequency sample and hold circuit has a sampling diode bridge for coupling an input test signal to be sampled to a holding capacitor when all of the diodes of the bridge are forward biased by an applied strobe signal, thereby charging the capacitor to the input voltage. The diode bridge substantially uncouples the input signal from the holding capacitor when the strobe current direction is reversed such that the holding capacitor retains the charge stored thereon and therefore remains charged to the current sample signal voltage at the instant the strobe current reverses direction. Any holding capacitor charging current generated by the sampling bridge as it returns to equilibrium after strobe current reversal is offset by a holding capacitor charging current of substantially equal magnitude and opposite phase generated by a compensating bridge. The compensating bridge has capacitive coupling characteristics substantially matching those of the sampling bridge and produces the reverse phase charging current either as a result of an applied input signal being of reverse phase to the sampling bridge input signal or as a result of an applied strobe current being of reverse phase to the sampling bridge strobe signal.
摘要翻译： 高频采样和保持电路具有一个采样二极管桥，用于将待采样的输入测试信号耦合到保持电容，当桥的所有二极管被施加的选通信号正向偏置时，从而将电容器充电到输入电压 。 当选通电流方向反向时，二极管桥基本上将保持电容器的输入信号解耦，使得保持电容器保持其上存储的电荷，并且因此在选通电流反向的瞬间保持充电至电流采样信号电压。 当选通电流反转之后由采样电桥产生的任何保持电容器充电电流由保持电容充电电流抵消，该保持电容充电电流由补偿桥产生的相位相等。 补偿桥具有基本上与采样桥的电容耦合特性，并且由于施加的输入信号与采样桥输入信号相反的结果，或作为施加的选通电流的结果而产生反相充电电流 与采样桥选通信号相反。
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公开(公告)号：US4572967A
公开(公告)日：1986-02-25
申请号：US415070
申请日：1982-09-07
申请人： Arthur J. Metz
发明人： Arthur J. Metz
CPC分类号： H03K17/603 , H03K17/14 , H03K17/6264
摘要： An improved bipolar analog switch comprising selectable emitter-coupled pairs of bipolar transistors in combination with an emitter follower output bipolar transistor is provided with means for matching operating characteristics of the selected emitter-coupled pair to eliminate thermal distortion and to provide precise signal replication. Also, a simplified TTL-compatible digital switch control circuit is provided.
摘要翻译： 包括与射极跟随器输出双极晶体管组合的可选择的发射极 - 耦合双极晶体管对的改进的双极性模拟开关被提供有用于匹配所选择的发射极耦合对的工作特性以消除热失真并提供精确的信号复制的装置。 此外，还提供了一种简化的TTL兼容数字开关控制电路。
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