公开(公告)号：US07358819B2

公开(公告)日：2008-04-15

申请号：US11333717

申请日：2006-01-17

申请人： George E. Rollins

发明人： George E. Rollins

IPC分类号： H03F3/08

CPC分类号： H03F3/087 ,  H03F1/34 ,  H03F3/45179 ,  H03F3/45475 ,  H03F2200/153

摘要： The present invention relates to circuits configured for implementation in sensors, sensors employing such circuits, and methods of operating and manufacturing such sensors and/or circuits. In at least some embodiments, the circuit includes a capacitor having a first input terminal and a first output terminal, a first amplifier having second and third input terminals and a second output terminal, and a second amplifier having fourth and fifth input terminals and a third output terminal. The first output terminal of the capacitor is coupled at least indirectly to the second input terminal, the fourth input terminal, and the third output terminal. Additionally, the second amplifier provides feedback current with respect to the capacitor depending upon signals provided to the fourth and fifth input terminals. The capacitor and each of the amplifiers can be implemented on an integrated circuit without any need for external components.

摘要翻译： 本发明涉及配置用于在传感器中实现的电路，采用这种电路的传感器，以及操作和制造这种传感器和/或电路的方法。 在至少一些实施例中，电路包括具有第一输入端和第一输出端的电容器，具有第二和第三输入端和第二输出端的第一放大器和具有第四和第五输入端和第三输入端的第二放大器 输出端子。 电容器的第一输出端子至少间接耦合到第二输入端子，第四输入端子和第三输出端子。 此外，根据提供给第四和第五输入端的信号，第二放大器相对于电容器提供反馈电流。 电容器和每个放大器可以在集成电路上实现，而不需要外部组件。

公开(公告)号：US07358818B2

公开(公告)日：2008-04-15

申请号：US10968353

申请日：2004-10-20

申请人： Katsumi Uesaka ,  Naoki Nishiyama

发明人： Katsumi Uesaka ,  Naoki Nishiyama

IPC分类号： H03F3/08

CPC分类号： H03G3/3084 ,  H03F3/08 ,  H03F3/087

摘要： The present invention provides an optical receiver operable for optical signals each having different transmission speed. The optical receiver includes a light-receiving device, a pre-amplifier, a main amplifier, and a control circuit. The pre-amplifier, may be a trans-impedance amplifier, includes a parallel connection of a switching device and a resistor in a trans-impedance or a load element. By switching ON/OFF the switching device, the gain and the bandwidth of the pre-amplifier may be changed. By providing a filter circuit, whose cut-off frequency may be switched, in the main amplifier, the bandwidth of the optical receiver may be varied.

摘要翻译： 本发明提供一种光学接收器，可操作用于各自具有不同传输速度的光信号。 光接收器包括光接收装置，前置放大器，主放大器和控制电路。 前置放大器可以是跨阻放大器，包括开关器件和跨阻抗或负载元件中的电阻器的并联连接。 通过切换开关装置的ON / OFF，可以改变前置放大器的增益和带宽。 通过在主放大器中设置截止频率可以切换的滤波器电路，可以改变光接收器的带宽。

公开(公告)号：US07330668B2

公开(公告)日：2008-02-12

申请号：US10815441

申请日：2004-04-01

申请人： Peter Heimlicher

发明人： Peter Heimlicher

IPC分类号： H04B10/06

CPC分类号： H03F1/26 ,  H03F3/087 ,  H03F3/45475 ,  H03F2200/372

摘要： The low noise light receiver comprises a light sensor for generating a sensor signal, the sensor signal comprising a wanted signal resulting from a light source and an interfering signal resulting from interfering light; an optical filter apparatus for reducing the interfering light; an electric filter apparatus connected to the light sensor for filtering out the interfering signal and for generating a correction signal that substantially compensates for the interfering signal; and a processing apparatus connected to the light sensor and the electric filter apparatus for processing the wanted signal in order to generate an output signal (Vout).

摘要翻译： 低噪声光接收器包括用于产生传感器信号的光传感器，该传感器信号包括由光源产生的有用信号和由干扰光产生的干扰信号; 用于减少干扰光的滤光器装置; 连接到光传感器的滤光器装置，用于滤除干扰信号并产生基本上补偿干扰信号的校正信号; 以及连接到光传感器和电过滤器装置的处理装置，用于处理所需信号以产生输出信号（V OUT）。

公开(公告)号：US07326905B2

公开(公告)日：2008-02-05

申请号：US11006192

申请日：2004-12-07

申请人： Yoshiki Kuhara ,  Mitsuaki Nishie ,  Shigeo Hayashi

发明人： Yoshiki Kuhara ,  Mitsuaki Nishie ,  Shigeo Hayashi

IPC分类号： H01J40/14

CPC分类号： H04B10/691 ,  H03F3/087

摘要： An optical receiver is provided with an optical-signal-receiving section and a controlling section. The optical-signal-receiving section incorporates a photodetector. The photodetector has an APD. Through a passivation film, a photoconductor is placed on a portion of a surface of the APD which remains unoccupied by an optical-signal-receiving area of the APD. When this structure is employed, the signal for controlling the avalanche multiplication factor of the APD can be obtained from the photoconductor. Consequently, the signal can be obtained with a simple structure. Furthermore, the photoconductor has a good linearity of the output current even to a weak lightwave. As a result, the output current I for controlling the avalanche multiplication factor of the APD can be obtained with high accuracy.

摘要翻译： 光接收器设置有光信号接收部分和控制部分。 光信号接收部分包括光电检测器。 光电检测器具有APD。 通过钝化膜，光电导体被放置在APD的表面的由APD的光信号接收区域保持未被占据的部分上。 当采用这种结构时，可以从光电导体获得用于控制APD的雪崩倍增因子的信号。 因此，可以以简单的结构获得信号。 此外，光电导体即使对于弱光也具有良好的输出电流线性。 结果，可以高精度地获得用于控制APD的雪崩倍增因子的输出电流I。

公开(公告)号：US07319220B2

公开(公告)日：2008-01-15

申请号：US11392175

申请日：2006-03-29

申请人： Dario Soltesz ,  Cristiano Bazzani ,  Wim Cops

发明人： Dario Soltesz ,  Cristiano Bazzani ,  Wim Cops

IPC分类号： G01J1/44 ,  H03F3/08 ,  H01L31/00 ,  H01J40/14

CPC分类号： H03F1/08 ,  H03F1/22 ,  H03F1/34 ,  H03F3/087 ,  H03F3/343 ,  H03F3/347 ,  H03F3/45475 ,  H03F2200/291 ,  H03F2200/36 ,  H03F2200/375 ,  H03F2200/381 ,  H03F2200/387 ,  H03F2203/45528

摘要： A trans-impedance amplifier receives an input current and is operable to generate an output voltage responsive to the input current. The amplifier is responsive to an increased range of input currents and has a wide bandwidth. The amplifier includes an input stage having a first and a second transistor and is configured to receive the input current. The amplifier includes an output stage coupled to the input stage and having a third and a fourth transistor. A variable resistor is coupled to the output stage to adjust the amount of current in the output stage. A variable current source is coupled to the output stage and is operable to adjust the amount of current in the output stage. A output driver, which is coupled to the output stage, includes at least another transistor. The output driver is operable to provide the output voltage and is operable to reduce the output impedance of the amplifier.

摘要翻译： 跨阻放大器接收输入电流并且可操作以响应于输入电流产生输出电压。 放大器响应于增加的输入电流范围并具有宽带宽。 放大器包括具有第一和第二晶体管的输入级，并且被配置为接收输入电流。 放大器包括耦合到输入级并具有第三和第四晶体管的输出级。 可变电阻器耦合到输出级以调节输出级中的电流量。 可变电流源耦合到输出级，并且可操作以调节输出级中的电流量。 耦合到输出级的输出驱动器至少包括另一个晶体管。 输出驱动器可操作以提供输出电压并且可操作以减小放大器的输出阻抗。

公开(公告)号：US20080008262A1

公开(公告)日：2008-01-10

申请号：US11860343

申请日：2007-09-24

申请人： David Sobel ,  Augustine Kuo

发明人： David Sobel ,  Augustine Kuo

IPC分类号： H04L25/03 ,  H03F1/38 ,  H04B1/04

CPC分类号： H03F3/45 ,  H03F3/087 ,  H03F2200/372

摘要： A low-noise transmitter architecture and method for high linearity, high output-swing systems such as Asymmetrical Digital Subscriber Line (ADSL) systems. The transmitter uses a switched-current DAC having a current source coupled to ground, followed by a current-to-voltage converter. The resistance of the current source is typically large enough so that noise from an op-amp included in the current-to-voltage converter is not significantly amplified at the output. The current source may be passive and may include at least one resistor connected to ground. With a passive current source, portions of a signal output by the DAC enter either the current source or the current-to-voltage converter, but not both, eliminating noise in the system produced by the current source.

摘要翻译： 用于高线性度，高输出摆幅系统（例如非对称数字用户线路（ADSL）系统）的低噪声发射机架构和方法。 发射机使用具有耦合到地的电流源的开关电流DAC，随后是电流 - 电压转换器。 电流源的电阻通常足够大，使得包括在电流 - 电压转换器中的运算放大器的噪声在输出端没有被显着放大。 电流源可以是无源的，并且可以包括连接到地的至少一个电阻器。 使用无源电流源，DAC输出的信号部分进入电流源或电流 - 电压转换器，但不能同时输入，消除了由电流源产生的系统中的噪声。

公开(公告)号：US07317350B2

公开(公告)日：2008-01-08

申请号：US10515213

申请日：2003-05-15

申请人： Andrew Philip Armit

发明人： Andrew Philip Armit

IPC分类号： H03F17/00 ,  G11C11/44 ,  H03F3/12

CPC分类号： H01J37/244 ,  H01J2237/2448 ,  H03F3/087 ,  H03F3/45475 ,  H03F2200/261 ,  H03F2203/45138 ,  H03F2203/45512 ,  H03F2203/45528 ,  H03F2203/45594 ,  H03G3/3084

摘要： Disclosed is a transresistance amplifier for a charged particle detector, comprising a variable input resistance, which may be a phototransistor (IC3), a voltage amplification stage (IC1) and control means (IC3), operable to vary the variable input resistance. The variable input resistance includes a first light-dependent resistance and the control means includes a first variable intensity light source that is optically coupled to the first light-dependent resistance. Also disclosed is a charged particle detector that includes such a transresistance amplifier and an electron microscope that includes such a charged particle detector.

摘要翻译： 公开了一种用于带电粒子检测器的跨阻放大器，包括可变输入电阻，其可以是光电晶体管（IC 3），电压放大级（IC 1）和控制装置（IC 3），可操作以改变可变输入电阻 。 可变输入电阻包括第一光依赖电阻，并且控制装置包括光耦合到第一依赖于光的电阻的第一可变强度光源。 还公开了一种带电粒子检测器，其包括这种跨阻放大器和包括这种带电粒子检测器的电子显微镜。

公开(公告)号：US07304542B2

公开(公告)日：2007-12-04

申请号：US11180710

申请日：2005-07-14

申请人： Motohiko Yamamoto ,  Takanori Okuda

发明人： Motohiko Yamamoto ,  Takanori Okuda

IPC分类号： H03F3/08

CPC分类号： H03F3/087 ,  H01L31/101

摘要： A feedback resistor of a feedback circuit included in a photo-receiving amplifier element is formed on an island region in which an electric potential is in a floating state. The island region is electrically isolated from an island region on which an element other than the feedback resistor is formed. This enables the response speed of the photo-receiving amplifier element to be increased without changing the process of the circuit or varying a resistance value of the feedback resistor in a first-stage amplifier unit.

摘要翻译： 包括在光接收放大器元件中的反馈电路的反馈电阻器形成在电位处于浮置状态的岛区上。 岛区域与形成有反馈电阻器以外的元件的岛区电隔离。 这使得能够在不改变电路的处理或改变第一级放大器单元中的反馈电阻器的电阻值的情况下增加光接收放大器元件的响应速度。

公开(公告)号：US20070252602A1

公开(公告)日：2007-11-01

申请号：US11677077

申请日：2007-02-21

申请人： Yousuke KUROIWA ,  Hideo FUKUDA ,  Hiroshi YAMAGUCHI ,  Tetsuo CHATO ,  Yuzo SHIMIZU ,  Masaki TANIGUCHI

发明人： Yousuke KUROIWA ,  Hideo FUKUDA ,  Hiroshi YAMAGUCHI ,  Tetsuo CHATO ,  Yuzo SHIMIZU ,  Masaki TANIGUCHI

IPC分类号： G01R23/02

CPC分类号： H03F3/087 ,  G01R31/025 ,  H03F3/45475 ,  H03F2200/252 ,  H03F2203/45564

摘要： The test circuit according to the present invention includes: a plurality of light-receiving elements; a plurality of amplifiers, each of which converts, into a voltage, a photoelectric current supplied from one of the light-receiving elements; and an electric current supplying unit which supplies an electric current to each of the light-receiving elements and each of the amplifiers. In this test circuit, the electric current supplying unit selectively supplies an electric current to a first group of light-receiving elements and to a second group of light-receiving elements, the first group of light-receiving elements including light-receiving elements, out of the plurality of light-receiving elements, which are neither vertically nor horizontally adjacent to each other, and the second group of light-receiving elements including light-receiving elements, out of is the plurality of light-receiving elements, which are vertically or horizontally adjacent to the light-receiving elements of the first group of light-receiving elements.

摘要翻译： 根据本发明的测试电路包括：多个光接收元件; 多个放大器，每个放大器将从一个光接收元件提供的光电流转换成电压; 以及电流供应单元，其向每个光接收元件和每个放大器提供电流。 在该测试电路中，电流供给单元选择性地将电流提供给第一组光接收元件和第二组光接收元件，第一组光接收元件包括光接收元件 多个光接收元件彼此不垂直或水平相邻，并且包括光接收元件的第二组光接收元件是多个光接收元件，多个光接收元件是垂直或 水平地邻近第一组光接收元件的光接收元件。

公开(公告)号：US20070210872A1

公开(公告)日：2007-09-13

申请号：US11372793

申请日：2006-03-10

申请人： Richard Randlett

发明人： Richard Randlett

IPC分类号： H03F3/08

CPC分类号： H03F3/087 ,  H03F1/08 ,  H03F3/45475 ,  H03F3/45928 ,  H03F3/45941 ,  H03F2203/45061 ,  H03F2203/45078 ,  H03F2203/45424 ,  H03F2203/45561

摘要： A voltage reference forces a constant voltage at the inputs to an amplifier, thereby negating a need for a dummy detector on the non-active input of the amplifier.

摘要翻译： 电压基准在放大器的输入端施加恒定电压，从而不需要在放大器的非有效输入端上的虚拟检测器。