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1. 发明公开

EP3413462A1 DIFFERENTIAL AMPLIFIER WITH MODIFIED COMMON MODE REJECTION, AND TO A CIRCUIT WITH AN IMPROVED COMMON MODE REJECTION RATIO 审中-公开
公开(公告)号：EP3413462A1
公开(公告)日：2018-12-12
申请号：EP18176037.2
申请日：2018-06-05
申请人： Analog Devices Global Unlimited Company
发明人： HURWITZ, Jonathan Ephraim David
IPC分类号： H03F3/393 , H03F3/45
CPC分类号： H03F3/45717 , H03F3/393 , H03F3/45183 , H03F3/45475 , H03F3/45659 , H03F3/45964 , H03F2203/45008 , H03F2203/45022 , H03F2203/45068 , H03F2203/45078 , H03F2203/45418 , H03F2203/45421 , H03F2203/45424 , H03F2203/45434 , H03F2203/45528
摘要： An amplifier circuit (12) having improved common mode rejection is provided. This can be achieved by estimating the common mode value of an input signal and using this to adjust a target common mode voltage at the output of the amplifier (12). This can help avoid the differential gain becoming modified by the common mode voltage.

2. 发明公开

EP0032533A1 Verstärkerschaltung 失效
标题翻译： Verstärkerschaltung。
公开(公告)号：EP0032533A1
公开(公告)日：1981-07-29
申请号：EP80106842.0
申请日：1980-11-06
申请人： Licentia Patent-Verwaltungs-GmbH
发明人： Rall, Bernhard, Dipl.-Ing.
IPC分类号： H03G3/30 , H03F3/183 , H03F3/45
CPC分类号： H03G3/3005 , H03F3/183 , H03F3/45511 , H03F3/456 , H03F2203/45008 , H03F2203/45066 , H03F2203/45068 , H03F2203/45082 , H04M1/76
摘要： Zur Kompensation des Temperaturkoeffizienten dynamisch elektroakustischer Wandler in Endgeräten der Drahtnachrichtentechnik, insbesondere von Hörkapseln und Tauchspulenmikrofonen in Fernsprechgeräten wird für eine Verstärkerschaltung mit bipolaren integrierten Halbleiterverstärkerstufen vorgeschlagen, zwischen einer ersten Differenzverstärkerstufe (1) und einer daran angeschlossenen zweiten Verstärkerstufe (3) eine temperaturabhängige Gegenkopplungsschaltung (21) vorzusehen, deren Temperaturgang den des Wandlers über dem gesamten Betriebstemperaturbereich praktisch genau kompensiert. Hierfür ist eine Differenzverstärkerstufe (212, 214) besonders geeignet, da ihr vom Schleifenstrom (211) der Anschlußleitung (4, 5) gesteuerter Emittersummenstrom (213) zusätzlich die von der Länge der Anschlußleitung abhängige Signaldämpfung kompensiert.
摘要翻译：为了补偿线路通信输出装置中的动态电声换能器的温度系数，特别是在电话机中的接收器盒和移动线圈麦克风的输出装置中，提出了一种具有双极集成半导体放大器级的放大器电路，用于在第一差分放大器阶段（1）和连接到其的第二放大器级（3），温度特性在整个工作温度范围内几乎完全补偿换能器的温度特性。差分放大器级（212,214）特别适用于此，由于其由连接线（4,5）的环路电流（211）控制的发射极和电流（213）还补偿依赖于连接线。

3. 发明公开

EP3261250A1 AMPLIFICATION CIRCUIT 有权
标题翻译：功率放大电路
公开(公告)号：EP3261250A1
公开(公告)日：2017-12-27
申请号：EP16885458.6
申请日：2016-07-19
申请人： Shenzhen Goodix Technology Co., Ltd.
发明人： ZHANG, Mengwen
IPC分类号： H03F3/45
CPC分类号： H03F1/0205 , H03F1/301 , H03F1/32 , H03F3/005 , H03F3/187 , H03F3/45183 , H03F3/45188 , H03F3/45192 , H03F3/45475 , H03F3/45659 , H03F3/45699 , H03F3/45762 , H03F2200/129 , H03F2200/156 , H03F2200/159 , H03F2200/18 , H03F2200/222 , H03F2200/252 , H03F2200/264 , H03F2200/471 , H03F2200/555 , H03F2203/45008 , H03F2203/45012 , H03F2203/45024 , H03F2203/45028 , H03F2203/45054 , H03F2203/45068 , H03F2203/45082 , H03F2203/45112 , H03F2203/45134 , H03F2203/45136 , H03F2203/45171 , H03F2203/45174 , H03F2203/45182 , H03F2203/45188 , H03F2203/45192 , H03F2203/45208 , H03F2203/45244 , H03F2203/45332 , H03F2203/45421 , H03F2203/45434 , H03F2203/45444 , H03F2203/45512 , H03F2203/45514 , H03F2203/45534 , H03F2203/45544 , H03F2203/45546 , H03F2203/45551 , H03F2203/45586 , H03F2203/45588 , H03F2203/45616 , H03F2203/45632 , H03F2203/45642 , H03F2203/45656 , H03F2203/45674 , H03F2203/45676
摘要： The present application provides an amplifying circuit comprising a reference voltage generating circuit, a common-mode voltage conversion circuit, a common-mode negative feedback circuit, and an amplifying sub-circuit. The reference voltage generating circuit generates a first reference voltage, a second reference voltage, and a reference common-mode voltage according to a post-stage common-mode voltage, the common-mode voltage conversion circuit converts the pre-stage output differential signal into a differential input signal according to the reference common-mode voltage, the common-mode negative feedback circuit generates a control voltage to quickly establish a common-mode negative feedback of the amplifying sub-circuit, wherein the first reference voltage and the second reference voltage are used to cancel a baseline signal of the pre-stage output differential signal. The amplifying circuit provided in the present application can eliminate the baseline signal, convert the common-mode voltage and quickly establish the common-mode negative feedback.
摘要翻译：本申请提供一种放大电路，包括参考电压产生电路，共模电压转换电路，共模负反馈电路和放大子电路。参考电压产生电路根据后级共模电压产生第一参考电压，第二参考电压和参考共模电压，共模电压转换电路将前级输出差分信号转换为根据所述参考共模电压产生差分输入信号，所述共模负反馈电路产生控制电压以快速建立所述放大子电路的共模负反馈，其中，所述第一参考电压和所述第二参考电压被用于消除前级输出差分信号的基线信号。本申请提供的放大电路可以消除基线信号，转换共模电压，快速建立共模负反馈。

4. 发明公开

EP0690561A1 Method for erasing a common mode current signal and transconductor assembly using such method 失效
标题翻译：灭火的共模电流信号和跨导电路与这样的方法的方法
公开(公告)号：EP0690561A1
公开(公告)日：1996-01-03
申请号：EP94830323.5
申请日：1994-06-30
申请人： SGS-THOMSON MICROELECTRONICS S.r.l.
发明人： Rezzi, Francesco , Baschirotto, Andrea , Castello, Rinaldo
IPC分类号： H03F3/45
CPC分类号： H03F3/45964 , H03F3/45278 , H03F3/45717 , H03F2203/45024 , H03F2203/45068 , H03F2203/45078 , H03F2203/45394 , H03F2203/45648
摘要： The transconductor system in accordance with the present invention is the type comprising a first transconductor circuit (C1) having differential mode transconductance equal to a first value and common mode transconductance equal to a second value and is characterised in that it comprises a second transconductor circuit (C2) connected in parallel with said transconductor circuit (C1) having common mode transconductance substantially equal in modulus to said second value and of opposite sign.
In this manner the common mode current signal at the output is greatly reduced.
摘要翻译：跨导器系统在雅舞的本发明是包括第一跨导体电路（C1）具有差分模式的跨导等于一个第一值和共模跨导等于第二值的类型和被DASS它包括第二跨导器电路（ C2）与所述跨导器电路（C1并联连接），其具有共模跨导模量基本上等于所述第二值和相反的符号。以这种方式在输出的共模电流信号大大降低。

5. 发明公开

EP1045516A3 Signal amplifying circuit 审中-公开
标题翻译： Signalverstärkerschaltung
公开(公告)号：EP1045516A3
公开(公告)日：2005-10-19
申请号：EP00200946.2
申请日：2000-03-15
申请人： Delphi Technologies, Inc.
发明人： Zarabadi, Seyed
IPC分类号： H03F3/45
CPC分类号： H03F3/45179 , H03F3/45717 , H03F2203/45068 , H03F2203/45074 , H03F2203/45076 , H03F2203/45078 , H03F2203/45081 , H03F2203/45188 , H03F2203/45212 , H03F2203/45508
摘要： A signal amplifying circuit (24) includes level shifting input circuits (D1-D4) permitting input common-mode voltages (VIN1 and VIN2) of an amplifier and fault detection circuit (50) to vary between preset limits. The sense amplifier circuit (24) includes a DC offset buffer circuit (52) operable to receive an analog DC offset compensation signal and provide this signal to an input of the amplifier and fault detection circuit (50). The buffered DC offset compensation signal provided to the amplifier and fault detection circuit (50) is operable to reduce an aggregate DC offset voltage attributable to signal amplifying circuit (24) to a desired DC offset level. The amplifier and fault detection circuit (50) also includes a fault detection function whereby an output (VSENSE) of the amplifier circuit (50) is forced to a predetermined output state if either, or both, of the inputs (VIN1 and VIN2) of the sense amplifier circuit (24) are unconnected; i.e., floating. The output (VSENSE) of the amplifier and fault detection circuit (50) is provided to an output buffer circuit (54) operable to modulate the load current supplied to an output (VOUT1, VOUT2) thereof as a function of a difference between the amplifier output signal (VSENSE) and the output buffer output signal (VOUT1).
摘要翻译：信号放大电路（24）包括允许放大器和故障检测电路（50）的输入共模电压（VIN1和VIN2）在预设极限之间变化的电平移位输入电路（D1-D4）。读出放大器电路（24）包括DC偏移缓冲电路（52），可操作以接收模拟DC偏移补偿信号，并将该信号提供给放大器和故障检测电路（50）的输入端。提供给放大器和故障检测电路（50）的缓冲DC偏移补偿信号可操作以将归因于信号放大电路（24）的总的DC偏移电压减小到期望的DC偏移电平。放大器和故障检测电路（50）还包括故障检测功能，由此如果放大器电路（50）的输入（VIN1和VIN2）的输入（VIN1和VIN2）中的任一个或两者被强制为预定的输出状态感测放大器电路（24）不连接; 即浮动。放大器和故障检测电路（50）的输出（VSENSE）被提供给输出缓冲器电路（54），该输出缓冲器电路（54）可用于调制提供给输出（VOUT1，VOUT2）的负载电流作为放大器输出信号（VSENSE）和输出缓冲器输出信号（VOUT1）。

6. 发明授权

EP0690561B1 Method for erasing a common mode current signal and transconductor assembly using such method 失效
标题翻译：灭火的共模电流信号和跨导电路与这样的方法的方法
公开(公告)号：EP0690561B1
公开(公告)日：2001-10-31
申请号：EP94830323.5
申请日：1994-06-30
申请人： STMicroelectronics S.r.l.
发明人： Rezzi, Francesco , Baschirotto, Andrea , Castello, Rinaldo
IPC分类号： H03F3/45
CPC分类号： H03F3/45964 , H03F3/45278 , H03F3/45717 , H03F2203/45024 , H03F2203/45068 , H03F2203/45078 , H03F2203/45394 , H03F2203/45648

7. 发明公开

EP1045516A2 Signal amplifying circuit 审中-公开
标题翻译：信号放大器电路
公开(公告)号：EP1045516A2
公开(公告)日：2000-10-18
申请号：EP00200946.2
申请日：2000-03-15
申请人： Delphi Technologies, Inc.
发明人： Zarabadi, Seyed
IPC分类号： H03F3/45
CPC分类号： H03F3/45179 , H03F3/45717 , H03F2203/45068 , H03F2203/45074 , H03F2203/45076 , H03F2203/45078 , H03F2203/45081 , H03F2203/45188 , H03F2203/45212 , H03F2203/45508
摘要： A signal amplifying circuit (24) includes level shifting input circuits (D1-D4) permitting input common-mode voltages (VIN1 and VIN2) of an amplifier and fault detection circuit (50) to vary between preset limits. The sense amplifier circuit (24) includes a DC offset buffer circuit (52) operable to receive an analog DC offset compensation signal and provide this signal to an input of the amplifier and fault detection circuit (50). The buffered DC offset compensation signal provided to the amplifier and fault detection circuit (50) is operable to reduce an aggregate DC offset voltage attributable to signal amplifying circuit (24) to a desired DC offset level. The amplifier and fault detection circuit (50) also includes a fault detection function whereby an output (VSENSE) of the amplifier circuit (50) is forced to a predetermined output state if either, or both, of the inputs (VIN1 and VIN2) of the sense amplifier circuit (24) are unconnected; i.e., floating. The output (VSENSE) of the amplifier and fault detection circuit (50) is provided to an output buffer circuit (54) operable to modulate the load current supplied to an output (VOUT1, VOUT2) thereof as a function of a difference between the amplifier output signal (VSENSE) and the output buffer output signal (VOUT1).

8. 发明公开

EP2127069A1 LINEAR TRANSCONDUCTOR FOR RF COMMUNICATIONS 有权
标题翻译：线性跨射频通信所
公开(公告)号：EP2127069A1
公开(公告)日：2009-12-02
申请号：EP08743993.1
申请日：2008-03-18
申请人： QUALCOMM Incorporated
发明人： MUTHALI, Harish , BARNETT, Kenneth, Charles
IPC分类号： H03F1/32 , H03F3/45
CPC分类号： H03F3/45188 , H03F1/32 , H03F1/3211 , H03F3/45 , H03F3/45659 , H03F2200/357 , H03F2203/45068 , H03F2203/45318 , H03F2203/45352
摘要： The present patent application comprises a linear transconductor having at least one input and at least one output, comprising a differential amplifier having a plurality of transistors and a plurality of inputs, wherein a difference of input signals is amplified, a cascode circuit having a plurality of transistors, wherein the transistors are operably connected to the differential amplifier, wherein reverse isolation between an input and an output of the linear transconductor is improved by decoupling the input and the output of the linear transconductor by mounting at least one transistor of the plurality of transistors of the cascode circuit as a common-gate stacked on the at least one transistor of the differential amplifier, an active load having a plurality of transistors operably connected between the cascode circuit and supply voltage, and an auxiliary device operably connected to the connection between the active load, the cascode device and ground.

9. 发明授权

EP0516423B1 Composite differential amplifier 失效
标题翻译：一种复合差分放大器
公开(公告)号：EP0516423B1
公开(公告)日：1996-05-01
申请号：EP92304852.4
申请日：1992-05-28
申请人： NEC CORPORATION
发明人： Nishijima, Kazunori
IPC分类号： H03F3/45
CPC分类号： H03F3/45511 , H03F2203/45006 , H03F2203/45008 , H03F2203/45036 , H03F2203/45068 , H03F2203/45074 , H03F2203/45076 , H03F2203/45082 , H03F2203/45202 , H03F2203/45212 , H03F2203/45402 , H03F2203/45424 , H03F2203/45702

10. 发明公开

EP3261250A4 AMPLIFICATION CIRCUIT 有权
公开(公告)号：EP3261250A4
公开(公告)日：2018-07-04
申请号：EP16885458
申请日：2016-07-19
申请人： SHENZHEN GOODIX TECH CO LTD
发明人： ZHANG MENGWEN
IPC分类号： H03F3/45 , H03F3/00 , H03F3/187
CPC分类号： H03F1/0205 , H03F1/301 , H03F1/32 , H03F3/005 , H03F3/187 , H03F3/45183 , H03F3/45188 , H03F3/45192 , H03F3/45475 , H03F3/45659 , H03F3/45699 , H03F3/45762 , H03F2200/129 , H03F2200/156 , H03F2200/159 , H03F2200/18 , H03F2200/222 , H03F2200/252 , H03F2200/264 , H03F2200/471 , H03F2200/555 , H03F2203/45008 , H03F2203/45012 , H03F2203/45024 , H03F2203/45028 , H03F2203/45054 , H03F2203/45068 , H03F2203/45082 , H03F2203/45112 , H03F2203/45134 , H03F2203/45136 , H03F2203/45171 , H03F2203/45174 , H03F2203/45182 , H03F2203/45188 , H03F2203/45192 , H03F2203/45208 , H03F2203/45244 , H03F2203/45332 , H03F2203/45421 , H03F2203/45434 , H03F2203/45444 , H03F2203/45512 , H03F2203/45514 , H03F2203/45534 , H03F2203/45544 , H03F2203/45546 , H03F2203/45551 , H03F2203/45586 , H03F2203/45588 , H03F2203/45616 , H03F2203/45632 , H03F2203/45642 , H03F2203/45656 , H03F2203/45674 , H03F2203/45676
摘要： The present application provides an amplifying circuit comprising a reference voltage generating circuit, a common-mode voltage conversion circuit, a common-mode negative feedback circuit, and an amplifying sub-circuit. The reference voltage generating circuit generates a first reference voltage, a second reference voltage, and a reference common-mode voltage according to a post-stage common-mode voltage, the common-mode voltage conversion circuit converts the pre-stage output differential signal into a differential input signal according to the reference common-mode voltage, the common-mode negative feedback circuit generates a control voltage to quickly establish a common-mode negative feedback of the amplifying sub-circuit, wherein the first reference voltage and the second reference voltage are used to cancel a baseline signal of the pre-stage output differential signal. The amplifying circuit provided in the present application can eliminate the baseline signal, convert the common-mode voltage and quickly establish the common-mode negative feedback.

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