公开(公告)号：EP3972126A1

公开(公告)日：2022-03-23

申请号：EP20306049.6

申请日：2020-09-18

申请人： Schneider Electric Industries SAS

发明人： MOLINA MENDOZA, Gregory ,  CASTILLO BUENAVENTURA, Felipe

IPC分类号： H03F1/02 ,  H03F3/34 ,  H03K17/66 ,  H03K17/68

摘要： The invention relates to a bidirectional bipolar transistor switch arrangement, comprising:
a first bipolar transistor (Q1) and a second bipolar transistor (Q2) connected in anti-parallel between a first terminal and a second terminal,
a resistor (R1) connected to the base of the first bipolar transistor (Q1) and the second bipolar transistor and to a control terminal,
a first diode (D1) connected with anode to the first terminal,
a second diode (D2) connected with anode to the second terminal,
the first diode and the second diode being connected via respective cathodes to a supply terminal.
The bidirectional bipolar transistor switch arrangement is able to control the power supply within a daisy chain with low drop voltage.

公开(公告)号：EP2952995B1

公开(公告)日：2021-11-10

申请号：EP14171088.9

申请日：2014-06-04

发明人： Drebinger, Stephan ,  Curra, Roberto

IPC分类号： G05F1/575 ,  H03F3/34 ,  H03F3/45

公开(公告)号：EP3208939A1

公开(公告)日：2017-08-23

申请号：EP15850335.9

申请日：2015-10-15

申请人： FUJIKURA LTD.

发明人： TANAKA, Takayuki ,  HAYASHI, Minako

IPC分类号： H03F3/08 ,  H03F3/34 ,  H04B10/69

CPC分类号： H04B10/697 ,  G01J1/44 ,  G01J2001/444 ,  H03F3/087 ,  H03F3/45475 ,  H03F3/45968 ,  H03F2200/375 ,  H03F2200/405 ,  H03F2200/453 ,  H03F2200/462 ,  H03F2200/481 ,  H03F2203/45152 ,  H03F2203/45212 ,  H04B10/69 ,  H04B10/695

摘要： The present disclosure includes a photodetector element (11) that converts an optical signal into an electric current signal; a transimpedance amplifier (12a) that converts the electric current signal into a voltage signal; a differential amplifier (12d) that converts the voltage signal into a differential signal, by performing differential amplification of a difference between the voltage signal and a threshold voltage; an LOS detection circuit that detects a no-signal section of the optical signal; and an MCU that repeatedly executes offset cancellation processing, the offset cancellation processing including threshold voltage change processing in which the threshold voltage is changed such that an offset voltage of the differential signal is reduced, the MCU 13 skipping the threshold voltage change processing in the no-signal section.

摘要翻译： 本公开包括将光信号转换成电流信号的光电检测器元件（11） 跨阻放大器（12a），其将电流信号转换为电压信号; 差分放大器（12d），其通过对所述电压信号和阈值电压之间的差进行差分放大来将所述电压信号转换为差分信号; 检测光信号的无信号部分的LOS检测电路; 以及重复执行偏移取消处理的MCU，所述偏移取消处理包括阈值电压改变处理，在所述阈值电压改变处理中，阈值电压被改变为使得差分信号的偏移电压降低，MCU 13跳过阈值电压改变处理 - 信号部分。

公开(公告)号：EP2058944A4

公开(公告)日：2011-05-04

申请号：EP07792993

申请日：2007-08-27

申请人： ASAHI KASEI EMD CORP

发明人： AIBA YUSUKE

IPC分类号： H03G3/10 ,  H03F3/34 ,  H03F3/45

CPC分类号： H03G1/0029 ,  H03F1/3211 ,  H03F3/45179 ,  H03F3/45183 ,  H03F3/45188 ,  H03F2203/45052 ,  H03F2203/45066 ,  H03F2203/45101 ,  H03F2203/45292 ,  H03F2203/45356 ,  H03F2203/45394 ,  H03F2203/45481 ,  H03F2203/45586 ,  H03G1/0023 ,  H03G1/04

公开(公告)号：EP2086108A4

公开(公告)日：2010-09-22

申请号：EP07791344

申请日：2007-07-26

申请人： ASAHI KASEI EMD CORP

发明人： AIBA YUSUKE

IPC分类号： H03F3/34 ,  H03F3/45 ,  H03G3/10

CPC分类号： H03G1/0029 ,  H03F3/45188 ,  H03F2203/45078 ,  H03F2203/45288 ,  H03F2203/45302

公开(公告)号：EP1676362B1

公开(公告)日：2008-12-31

申请号：EP04770177.6

申请日：2004-10-06

申请人： NXP B.V.

发明人： EL WAFFAOUI, Rachid

IPC分类号： H03F3/34

CPC分类号： H03F3/72 ,  H03F1/26 ,  H03F3/34 ,  H03F2200/153 ,  H03F2200/372

摘要： The present invention relates to an electronic circuit for amplification of bipolar symmetric current signals. The electronic circuit has a pair of complimentary current mirrors. Depending on the polarity of the bipolar current signal one or the current mirrors is active while the other current mirror is in an off state. This way adding a biasing current to the input signal is avoided which substantially reduces noise.

公开(公告)号：EP0981197A4

公开(公告)日：2005-03-30

申请号：EP99939236

申请日：1999-03-11

申请人： MATSUSHITA ELECTRIC IND CO LTD

发明人： ASANO HIROAKI

IPC分类号： H03F3/08 ,  H03F3/45 ,  H03K5/08 ,  H04B10/69 ,  H03F1/30 ,  H03F3/34 ,  H04B10/06 ,  H04B10/158

CPC分类号： H04B10/6933 ,  H03F3/087 ,  H03F3/45183 ,  H03F3/45959 ,  H03K5/082

摘要： First and second peak detectors (12, 13) detect the respective peak values of the positive-phase and negative-phase outputs of a first differential amplifier (11) for amplifying the input signal and hold them. A second differential amplifier (14) amplifies the difference between the outputs of the peak detectors (12, 13). The positive-phase and negative-phase outputs of the second differential amplifier (14) agree with the middle values of the positive-phase and negative-phase outputs of the first differential amplifier (11). A composite differential amplifier (15) amplifies the differential component {(VS1-VR1)-(VS2-VR2)} between the differential component (VS1-VR1) between the positive-phase output (VS1) of the first differential amplifier (11) and the positive-phase output (VR1) of the second differential amplifier (14) and the differential component (VS2-VR2) between the opposite-phase component (VS2) of the first differential amplifier (11) and the opposite-phase output (VR2) of the second differential amplifier (14). Preferably, the output value of the first differential amplifier (11) at the time of no input is the same as that of the second differential amplifier (14) at the time of no input.

公开(公告)号：EP0788680B1

公开(公告)日：2003-05-14

申请号：EP96926525.5

申请日：1996-08-26

申请人： Koninklijke Philips Electronics N.V.

发明人： WARMERDAM, Leonardus, Franciscus, Petrus ,  BOEZEN, Hendrik

IPC分类号： H03F3/45 ,  H03F3/34 ,  G05F1/56 ,  H05B41/26

CPC分类号： G05F1/561

摘要： The invention relates to a circuit arrangement provided with a voltage-current converter comprising: a differential amplifier (VV) provided with a first input terminal (K1) for connection to a reference voltage source (RSB) for generating a reference voltage Vref, a second input terminal (K2) for connection of a reference resistor Rref, and an output, means (I) for generating a first current through the reference resistor Rref, and a current amplifier (SV) for generating a second current and provided with an input coupled to the output of the differential amplifier. According to the invention, the circuit arrangement is characterized in that the differential amplifier is provided with a low-pass filter, in that the current amplifier on the one hand and the means (I) and the reference resistor on the other hand exclusively comprise mutually separate components, and in that the circuit arrangement is in addition provided with means (II) coupled to the current amplifier and to the means (I) for influencing the first current in dependence on the second current. It is achieved thereby that an interference signal present at the second input terminal hardly causes any appreciable interference in the second current.

公开(公告)号：EP0056809A4

公开(公告)日：1983-02-04

申请号：EP81902131

申请日：1981-07-13

申请人： MOTOROLA INC

发明人： PACE WILSON DAVID

IPC分类号： G05F3/26 ,  H03F3/34 ,  H03F3/343 ,  H03F3/347 ,  H03F3/04

CPC分类号： G05F3/265 ,  H03F3/343

公开(公告)号：EP0044339A4

公开(公告)日：1982-09-03

申请号：EP81900586

申请日：1980-11-24

申请人： MOTOROLA INC

发明人： LOCASCIO JAMES JASON ,  JARRETT ROBERT BENJAMIN

IPC分类号： B03B9/00 ,  C10C3/00 ,  C10G1/00 ,  C10L9/00 ,  F23K1/00 ,  G05F3/26 ,  H03F3/34 ,  H03F3/343 ,  H03F3/347 ,  H03F3/14

CPC分类号： B03B9/00 ,  C10C3/007 ,  C10G1/00 ,  C10L9/00 ,  F23K1/00 ,  G05F3/265 ,  H03F3/347

摘要： Three terminal current source (10) including a current turn around circuit comprising first (12) and second (14) transistors. The emitters of the pair of transistors are coupled to a common terminal (20) with the collector of the first one of the pair of the transistors being coupled to an input terminal at which is supplied a reference current (25) with the collector of the other one of the pair of transistors being coupled in cascode through the emitter collector path of an output transistor (24) to the output terminal (34) of the current source circuit. The base electrodes of the pair of transistors are directly connected to each other with the control electrode of the output transistor being connected to the collector of the first one of the pair of transistors of the current turn around circuit. A single lateral split collector transistor (26) is utilized to improve the current match between the input and output of the current source wherein the emitter of this transistor is connected to the base electrodes of the pair of transistors of the current source with one collector and the base of the split collector transistor being connected to the collector of the second one of the pair of transistors. The other one of the collectors of the split collector transistor is connected directly to the output terminal of the current source. The aforedescribed structure provides a current source having improved matching characteristics over a temperature range which varies from -40`C to +125`C.