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1. 发明公开

CN108964619A 可提升负载电流与输入电压差间线性度的运算放大器电路有权
公开(公告)号：CN108964619A
公开(公告)日：2018-12-07
申请号：CN201810215987.7
申请日：2018-03-15
申请人：联咏科技股份有限公司
发明人：卢志文 , 周志宪 , 曾柏瑜 , 程智修
IPC分类号： H03F1/32 , H03F3/45 , H03F3/68
CPC分类号： H03F1/3205 , H03F1/086 , H03F1/301 , H03F1/3211 , H03F1/523 , H03F3/45183 , H03F3/4521 , H03F3/45219 , H03F3/45237 , H03F3/45381 , H03F3/45632 , H03F2203/45342 , H03F2203/45352 , H03F2203/45382 , H03F2203/45384 , H03K17/063 , H03K17/0822 , H03F3/68 , H03F2203/45566
摘要：本发明是一种运算放大器电路。运算放大器电路包含差分输入级电路与负载级电路。差分输入级电路包含输入电路、电压维持电路与电流源。输入电路包含分别用于接收第一输入信号与第二输入信号的第一输入晶体管与第二输入晶体管。电压维持电路包含第一分支电路与第二分支电路。第一分支电路耦接于第一输入晶体管，其接收第一输入信号，且第二分支电路耦接于第二输入晶体管，其接收第二输入信号。电流源耦接于第一输入晶体管与第二输入晶体管。负载级电路耦接于电压维持电路。

2. 发明授权

US08189403B2 High speed linear differential amplifier 有权
标题翻译：高速线性差分放大器
公开(公告)号：US08189403B2
公开(公告)日：2012-05-29
申请号：US12817760
申请日：2010-06-17
申请人： Young-Soo Sohn , Jeong-Don Lim , Kwang-Il Park
发明人： Young-Soo Sohn , Jeong-Don Lim , Kwang-Il Park
IPC分类号： G11C7/00 , H03L7/00
CPC分类号： H03F3/45183 , H03F1/3211 , H03F3/45179 , H03F3/45654 , H03F2200/453 , H03F2200/78 , H03F2203/45382 , H03F2203/45384 , H03F2203/45454 , H03F2203/45466 , H03F2203/45702
摘要： A high speed linear differential amplifier (HSLDA) having automatic gain adjustment to maximize linearity regardless of manufacturing process, changes in temperature, or swing width change of the input signal. The HSLDA comprises a differential amplifier, and a control signal generator including a replica differential amplifier, a reference voltage generator, and a comparator. The comparator outputs a control signal that automatically adjusts the gain of the high speed linear differential amplifier and of the replica differential amplifier. The replica differential amplifier receives predetermined complementary voltages as input signals and outputs a replica output signal to the comparator. The reference voltage generator outputs a voltage to the comparator at which linearity of the output signal of the differential amplifier is maximized. The control signal equalizes the voltage level of the replica output signal and the reference voltage, and controls the gain of the differential amplifier.
摘要翻译：具有自动增益调整的高速线性差分放大器（HSLDA），以便与输入信号的制造过程，温度变化或摆幅宽度变化无关地最大化线性度。 HSLDA包括差分放大器和包括复制差分放大器，参考电压发生器和比较器的控制信号发生器。比较器输出一个自动调节高速线性差分放大器和复制差分放大器增益的控制信号。复制差分放大器接收预定的互补电压作为输入信号，并将复制输出信号输出到比较器。参考电压发生器向差分放大器的输出信号的线性度最大化的比较器输出电压。控制信号使复制输出信号的电压电平与参考电压相等，并控制差分放大器的增益。

3. 发明申请

US20080211580A1 LOW NOISE AC DIFFERENTIAL AMPLIFIER WITH REDUCED LOW CORNER FREQUENCY AND CURRENT CONSUMPTION 有权
标题翻译：低噪声交流差分放大器，具有低角度频率和电流消耗
公开(公告)号：US20080211580A1
公开(公告)日：2008-09-04
申请号：US12017694
申请日：2008-01-22
申请人： Giacomino BOLLATI , Guido Gabriele Albasini
发明人： Giacomino BOLLATI , Guido Gabriele Albasini
IPC分类号： H03F3/45
CPC分类号： H03F3/4508 , H03F1/0205 , H03F1/08 , H03F3/45085 , H03F2203/45296 , H03F2203/45382 , H03F2203/45384
摘要： An integrated amplifier may include a transconductance stage including a differential pair of input transistors of a first type of conductivity, respective resistive loads coupled to said input transistors, and a first bias circuit coupled to the input transistors. The first bias circuit may include a second differential pair of bias transistors having first conduction terminals coupled in common and second conduction terminals coupled to respective conduction terminals of the input transistors. The first bias circuit may also include respective second bias circuits coupled to the bias transistors to enable the input transistors in a conduction state with the input transistors being biased by a same respective bias current that flows through the respective input transistors. The first bias circuit may also include a capacitive network coupled to the bias transistors to define with the input transistors a feedback loop.
摘要翻译：集成放大器可以包括跨导级，其包括耦合到所述输入晶体管的第一类型导电性的差分对输入晶体管，以及耦合到输入晶体管的第一偏置电路。第一偏置电路可以包括第二差分对偏置晶体管，其具有耦合到耦合到输入晶体管的相应导电端子的公共和第二导电端子中的第一导电端子。第一偏置电路还可以包括耦合到偏置晶体管的相应的第二偏置电路，以使得输入晶体管处于导通状态，并且输入晶体管被偏置相同的相应偏置电流流过相应的输入晶体管。第一偏置电路还可以包括耦合到偏置晶体管的电容网络，以与输入晶体管一起定义反馈回路。

4. 发明公开

EP1003281A3 Multi-input differential amplifier circuit 有权
标题翻译：多输入差动放大电路
公开(公告)号：EP1003281A3
公开(公告)日：2005-01-19
申请号：EP99402874.4
申请日：1999-11-19
申请人： SONY CORPORATION
发明人： Tachimori, Hiroshi, c/o Sony LSI Design Corp.
IPC分类号： H03F3/45
CPC分类号： H03F3/45183 , H03F2203/45361 , H03F2203/45382 , H03F2203/45392 , H03F2203/45616 , H03F2203/45664 , H03F2203/45674 , H03F2203/45702 , H03F2203/45716 , H03F2203/45722
摘要： The multi-input differential amplifier circuit is configured by forming differential pairs by transistors MI 0i , MI 1i (i=1, 2,..., n, n is an integer) with gates which are connected to positive and negative input terminals. The drains of the positive side transistors of the differential pairs are connected to the negative output terminals, the drains of the negative side transistor of the differential pairs are connected to the positive output terminals, and the sources of the transistors of the differential pairs are connected via resistors to current sources for supplying operating currents to the differential pair. The dynamic range can be broadened in comparison with a differential amplifier circuit in which source resistors are not connected. The multi-input differential amplifier circuit maintains the linear characteristic of the input voltage and the output voltage and enhances the dynamic range and the linear characteristic.

5. 发明申请

US20180337642A1 OPERATIONAL AMPLIFIER CIRCUIT CAPABLE OF IMPROVING LINEARITY RELATION BETWEEN LOADING CURRENT AND INPUT VOLTAGE DIFFERENCE 审中-公开
公开(公告)号：US20180337642A1
公开(公告)日：2018-11-22
申请号：US15802617
申请日：2017-11-03
申请人： NOVATEK MICROELECTRONICS CORP.
发明人： Chih-Wen Lu , Chih-Hsien Chou , Po-Yu Tseng , Jhih-Siou Cheng
IPC分类号： H03F1/32 , H03F1/52 , H03F3/45 , H03F1/08 , H03F1/30 , H03K17/082 , H03K17/06
CPC分类号： H03F1/3205 , H03F1/086 , H03F1/301 , H03F1/3211 , H03F1/523 , H03F3/45183 , H03F3/4521 , H03F3/45219 , H03F3/45237 , H03F3/45381 , H03F3/45632 , H03F2203/45342 , H03F2203/45352 , H03F2203/45382 , H03F2203/45384 , H03K17/063 , H03K17/0822
摘要： An operational amplifier circuit is provided. The operational amplifier circuit includes a differential input stage circuit and a loading stage circuit. The differential input stage circuit includes an input circuit, a voltage maintaining circuit, and a current source. The input circuit includes a first input transistor and a second input transistor, for receiving a first and a second input signals, respectively. The voltage maintaining circuit includes a first branch circuit and a second branch circuit. The first branch circuit is coupled to the first input transistor for receiving the first input signal, and the second branch circuit is coupled to the second input transistor for receiving the second input signal. The current source is coupled to the first input transistor and the second input transistor. The loading stage circuit is coupled to the voltage maintaining circuit.

6. 发明申请

US20110109390A1 TRANSCONDUCTOR CIRCUIT 有权
标题翻译： TRANSCONDUCTOR电路
公开(公告)号：US20110109390A1
公开(公告)日：2011-05-12
申请号：US13006246
申请日：2011-01-13
申请人： Sebastian Zeller
发明人： Sebastian Zeller
IPC分类号： H03F3/45
CPC分类号： H03F3/45085 , H03F1/0261 , H03F3/195 , H03F3/4508 , H03F2200/294 , H03F2200/36 , H03F2200/375 , H03F2203/45318 , H03F2203/45352 , H03F2203/45362 , H03F2203/45382 , H03F2203/45384 , H03F2203/45392 , H03F2203/45486 , H03F2203/45496
摘要： A transconductor circuit, particularly according to the multi-tanh principle, having a first input node and a second input node, a first differential amplifier coupled to the first and second input nodes, and having a first offset voltage, and a second differential amplifier coupled to the first and second input nodes, and having a second offset voltage different from the first offset voltage. A first resistance circuit is coupled between the first differential amplifier and at least one current source, and a second resistance circuit is coupled between the second differential amplifier and the at least one current source. Varying of the current sources enables control of the transconductance without degrading linearity.
摘要翻译：具有第一输入节点和第二输入节点的多导体电路特别是多导体电路，耦合到第一和第二输入节点并且具有第一偏移电压的第一差分放大器和耦合到第一输入节点的第二差分放大器到第一和第二输入节点，并且具有不同于第一偏移电压的第二偏移电压。第一电阻电路耦合在第一差分放大器和至少一个电流源之间，第二电阻电路耦合在第二差分放大器与至少一个电流源之间。电流源的变化使得可以控制跨导而不降低线性度。

7. 发明申请

US20110001562A1 HIGH SPEED LINEAR DIFFERENTIAL AMPLIFIER 有权
标题翻译：高速线性差分放大器
公开(公告)号：US20110001562A1
公开(公告)日：2011-01-06
申请号：US12817760
申请日：2010-06-17
申请人： Young-Soo Sohn , Jeong-Don Lim , Kwang-Il Park
发明人： Young-Soo Sohn , Jeong-Don Lim , Kwang-Il Park
IPC分类号： H03F3/45
CPC分类号： H03F3/45183 , H03F1/3211 , H03F3/45179 , H03F3/45654 , H03F2200/453 , H03F2200/78 , H03F2203/45382 , H03F2203/45384 , H03F2203/45454 , H03F2203/45466 , H03F2203/45702
摘要： A high speed linear differential amplifier (HSLDA) having automatic gain adjustment to maximize linearity regardless of manufacturing process, changes in temperature, or swing width change of the input signal. The HSLDA comprises a differential amplifier, and a control signal generator including a replica differential amplifier, a reference voltage generator, and a comparator. The comparator outputs a control signal that automatically adjusts the gain of the high speed linear differential amplifier and of the replica differential amplifier. The replica differential amplifier receives predetermined complementary voltages as input signals and outputs a replica output signal to the comparator. The reference voltage generator outputs a voltage to the comparator at which linearity of the output signal of the differential amplifier is maximized. The control signal equalizes the voltage level of the replica output signal and the reference voltage, and controls the gain of the differential amplifier.
摘要翻译：具有自动增益调整的高速线性差分放大器（HSLDA），以便与输入信号的制造过程，温度变化或摆幅宽度变化无关地最大化线性度。 HSLDA包括差分放大器和包括复制差分放大器，参考电压发生器和比较器的控制信号发生器。比较器输出一个自动调节高速线性差分放大器和复制差分放大器增益的控制信号。复制差分放大器接收预定的互补电压作为输入信号，并将复制输出信号输出到比较器。参考电压发生器向差分放大器的输出信号的线性度最大化的比较器输出电压。控制信号使复制输出信号的电压电平与参考电压相等，并控制差分放大器的增益。

8. 发明授权

EP1003281B1 Multi-input differential amplifier circuit 有权
标题翻译：多输入差动放大电路
公开(公告)号：EP1003281B1
公开(公告)日：2008-01-02
申请号：EP99402874.4
申请日：1999-11-19
申请人： Sony Corporation
发明人： Tachimori, Hiroshi, c/o Sony LSI Design Corp.
IPC分类号： H03F3/45
CPC分类号： H03F3/45183 , H03F2203/45361 , H03F2203/45382 , H03F2203/45392 , H03F2203/45616 , H03F2203/45664 , H03F2203/45674 , H03F2203/45702 , H03F2203/45716 , H03F2203/45722

9. 发明公开

EP1003281A2 Multi-input differential amplifier circuit 有权
标题翻译： Mehrfacheingangsdifferenzverstärkerschaltung
公开(公告)号：EP1003281A2
公开(公告)日：2000-05-24
申请号：EP99402874.4
申请日：1999-11-19
申请人： SONY CORPORATION
发明人： Tachimori, Hiroshi, c/o Sony LSI Design Corp.
IPC分类号： H03F3/45
CPC分类号： H03F3/45183 , H03F2203/45361 , H03F2203/45382 , H03F2203/45392 , H03F2203/45616 , H03F2203/45664 , H03F2203/45674 , H03F2203/45702 , H03F2203/45716 , H03F2203/45722
摘要： The multi-input differential amplifier circuit is configured by forming differential pairs by transistors MI 0i , MI 1i (i=1, 2,..., n, n is an integer) with gates which are connected to positive and negative input terminals. The drains of the positive side transistors of the differential pairs are connected to the negative output terminals, the drains of the negative side transistor of the differential pairs are connected to the positive output terminals, and the sources of the transistors of the differential pairs are connected via resistors to current sources for supplying operating currents to the differential pair. The dynamic range can be broadened in comparison with a differential amplifier circuit in which source resistors are not connected.
The multi-input differential amplifier circuit maintains the linear characteristic of the input voltage and the output voltage and enhances the dynamic range and the linear characteristic.
摘要翻译：多输入差分放大器电路通过与连接到正和负输入端子的栅极的晶体管MI0i，MI1i（i = 1,2，...，n，n是整数）形成差分对来配置。差分对的正侧晶体管的漏极连接到负输出端，差分对的负侧晶体管的漏极连接到正输出端，并且差分对的晶体管的源极被连接通过电阻到电流源，为差分对提供工作电流。与不连接源电阻的差分放大电路相比，动态范围可以扩大。多输入差分放大器电路保持输入电压和输出电压的线性特性，增强动态范围和线性特性。

10. 发明授权

US08054131B2 Transconductor circuit 有权
标题翻译：跨导电路
公开(公告)号：US08054131B2
公开(公告)日：2011-11-08
申请号：US13006246
申请日：2011-01-13
申请人： Sebastian Zeller
发明人： Sebastian Zeller
IPC分类号： H03F3/45
CPC分类号： H03F3/45085 , H03F1/0261 , H03F3/195 , H03F3/4508 , H03F2200/294 , H03F2200/36 , H03F2200/375 , H03F2203/45318 , H03F2203/45352 , H03F2203/45362 , H03F2203/45382 , H03F2203/45384 , H03F2203/45392 , H03F2203/45486 , H03F2203/45496
摘要： A transconductor circuit, particularly according to the multi-tanh principle, having a first input node and a second input node, a first differential amplifier coupled to the first and second input nodes, and having a first offset voltage, and a second differential amplifier coupled to the first and second input nodes, and having a second offset voltage different from the first offset voltage. A first resistance circuit is coupled between the first differential amplifier and at least one current source, and a second resistance circuit is coupled between the second differential amplifier and the at least one current source. Varying of the current sources enables control of the transconductance without degrading linearity.
摘要翻译：具有第一输入节点和第二输入节点的多导体电路特别是多导体电路，耦合到第一和第二输入节点并且具有第一偏移电压的第一差分放大器和耦合到第一输入节点的第二差分放大器到第一和第二输入节点，并且具有不同于第一偏移电压的第二偏移电压。第一电阻电路耦合在第一差分放大器和至少一个电流源之间，第二电阻电路耦合在第二差分放大器和至少一个电流源之间。电流源的变化使得可以控制跨导而不降低线性度。

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