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1. 发明申请

US20110050342A1 Push-pull amplifier circuit and operational amplifier circuit using the same 有权
标题翻译：推挽放大电路和运算放大器电路使用相同
公开(公告)号：US20110050342A1
公开(公告)日：2011-03-03
申请号：US12805265
申请日：2010-07-21
申请人： Tachio Yuasa
发明人： Tachio Yuasa
IPC分类号： H03F3/45 , H03F3/26
CPC分类号： H03F3/3022 , H03F3/45183 , H03F2203/45632 , H03F2203/45674
摘要： A push-pull amplifier including first to third current paths. The first current path includes first transistor allowing first current to flow through the first current path according to input signal. The second current path includes second transistor allowing second current having opposite phase to the first current to flow through the second current path according to the first current; first resistor; and third transistor connected to one end of the first resistor and having control terminal connected to the other end of the first resistor. The third current path includes output terminal; fourth transistor allowing current having the same phase as the first current to flow through the third current path according to the input signal; and fifth transistor allowing current having the same phase as the second current to flow through the third current path according to voltage of first node between the first resistor and the third transistor.
摘要翻译：包括第一至第三电流路径的推挽放大器。第一电流路径包括允许第一电流根据输入信号流过第一电流路径的第一晶体管。第二电流路径包括允许与第一电流相反相位的第二电流根据第一电流流过第二电流路径的第二晶体管; 第一电阻; 所述第三晶体管连接到所述第一电阻器的一端并且具有连接到所述第一电阻器的另一端的控制端子。第三电流路径包括输出端子; 第四晶体管，其允许具有与所述第一电流相同相位的电流根据所述输入信号流过所述第三电流路径; 以及第五晶体管，其允许具有与第二电流相同相位的电流根据第一电阻器和第三晶体管之间的第一节点的电压流过第三电流路径。

2. 发明申请

US20100271132A1 Amplifier circuit with resistive current limitter 审中-公开
标题翻译：具有电阻电流限制器的放大器电路
公开(公告)号：US20100271132A1
公开(公告)日：2010-10-28
申请号：US12662514
申请日：2010-04-21
申请人： Tachio Yuasa
发明人： Tachio Yuasa
IPC分类号： H03F3/16
CPC分类号： H03F3/345
摘要： An amplifier circuit includes first transistor of first conductivity type having source connected to first power supply, while having gate connected to input terminal and drain connected to output terminal; transistor of second conductivity type having source connected to second power supply and drain connected to the output terminal; second transistor of the first conductivity type whose source and gate are connected to the source and gate of the first transistor of the first conductivity type, respectively; resistor whose one end connected to drain of the second transistor of the first conductivity type, and an output control circuit; current input terminal connected to the opposite end of the resistor; and voltage output terminal connected to the gate of the transistor of the second conductivity type. The output control circuit controls the gate voltage of the transistor of the second conductivity type based on the input current of the current input terminal.
摘要翻译：放大器电路包括：第一导电类型的第一晶体管，其源极连接到第一电源，同时具有连接到输入端子的栅极和连接到输出端子的漏极; 具有源极的第二导电类型的晶体管连接到连接到输出端子的第二电源和漏极; 第一导电类型的第二晶体管，其源极和栅极分别连接到第一导电类型的第一晶体管的源极和栅极; 电阻器的一端连接到第一导电类型的第二晶体管的漏极，以及输出控制电路; 电流输入端连接到电阻的另一端; 并且电压输出端子连接到第二导电类型的晶体管的栅极。输出控制电路基于电流输入端子的输入电流来控制第二导电类型的晶体管的栅极电压。

3. 发明申请

US20100007417A1 Differential amplifier with symmetric circuit topology 有权
标题翻译：具有对称电路拓扑的差分放大器
公开(公告)号：US20100007417A1
公开(公告)日：2010-01-14
申请号：US12314979
申请日：2008-12-19
申请人： Tachio Yuasa
发明人： Tachio Yuasa
IPC分类号： H03F3/45
CPC分类号： H03F3/45219 , H03F2203/45212 , H03F2203/45646 , H03F2203/45681
摘要： A differential amplifier circuit is provided with a first input stage including a transistor pair of a first conductivity type, of which transistor pair receives differential input signals; a first output stage connected to the first input stage; a second input stage including a transistor pair of a second conductivity type different from the first conductivity type, of which transistor pair receives the differential input signals; a second output stage connected to the second input stage; and an output terminal. The second output stage is structured with a circuit topology in which transistors of the first conductivity type in the first output stage are replaced with transistors of the second conductivity type, transistors of the second conductivity type in the first output stage are replaced with transistors of the first conductivity type, ground terminals in the first output stage are replaced with power supply terminals, and power supply terminals in the first output stage are replaced with ground terminals. The output terminal is commonly connected to outputs of the first and second output stages.
摘要翻译：差分放大器电路设置有包括第一导电类型的晶体管对的第一输入级，其中晶体管对接收差分输入信号; 连接到第一输入级的第一输出级; 第二输入级，其包括不同于第一导电类型的第二导电类型的晶体管对，其中晶体管对接收差分输入信号; 连接到第二输入级的第二输出级; 和输出端子。第二输出级由电路拓扑构成，其中第一输出级中的第一导电类型的晶体管被第二导电类型的晶体管代替，第一输出级中的第二导电类型的晶体管被替换为第一导电类型，第一输出级中的接地端子被替换为电源端子，并且第一输出级中的电源端子被替换为接地端子。输出端子通常连接到第一和第二输出级的输出。

4. 发明申请

US20090231038A1 Differential amplifier 有权
标题翻译：差分放大器
公开(公告)号：US20090231038A1
公开(公告)日：2009-09-17
申请号：US12379586
申请日：2009-02-25
申请人： Tachio Yuasa
发明人： Tachio Yuasa
IPC分类号： H03F3/45
CPC分类号： H03F3/45192 , H03F3/3022 , H03F3/45632 , H03F2203/45076 , H03F2203/45078 , H03F2203/45366 , H03F2203/45648
摘要： A differential amplifier includes a differential amplifier section to generate a current composed of a differential-mode current and a first common-mode current according to a differential-mode component and a common-mode component of an input signal, a common-mode current generator section to generate a common-mode current according to the common-mode component of the input signal, and a current amplifier section to receive the current and the common-mode current, amplify a difference between the current and the common-mode current and output a result.
摘要翻译：差分放大器包括差分放大器部分，用于根据差分模式分量和输入信号的共模分量产生由差模电流和第一共模电流组成的电流，共模电流发生器部分，以根据输入信号的共模分量产生共模电流，以及电流放大器部分，用于接收电流和共模电流，放大电流和共模电流之间的差，并输出结果。

5. 发明授权

US5568147A Digital-to-analog converter for reducing occupied area thereof 失效
标题翻译：用于减少占用面积的数模转换器
公开(公告)号：US5568147A
公开(公告)日：1996-10-22
申请号：US334343
申请日：1994-11-02
申请人： Atsushi Matsuda , Tachio Yuasa
发明人： Atsushi Matsuda , Tachio Yuasa
IPC分类号： H03M1/68 , H03M1/74 , H03M1/76 , H03M1/80
CPC分类号： H03M1/687 , H03M1/765 , H03M1/808
摘要： A D/A converter has a first partial circuit, and second and third partial circuits connected with said first partial circuit. The first partial circuit has a first row of K resistors of the same resistance value and groups of switches provided for the resistors, to select "K-1" resistors among said K resistors and connect said selected resistors in series with said second and third partial circuits. The second partial circuit has a second row of L resistors, a first group of switches connected in series with said resistors, respectively, and a second group of switches connected in parallel with said series-connected second row of resistors and said first group of switches, respectively. The third partial circuit has a third row of L resistors, a third group of switches connected in series with said resistors, respectively, and a fourth group of switches connected in parallel with said series-connected third row of resistors and said third group of switches, respectively. Therefore, the D/A converter can reduces an occupied area thereof, and increases the number of D/A converter chips to be fabricated on a wafer, to thereby reduce the costs of the D/A converters.
摘要翻译： D / A转换器具有第一部分电路，以及与所述第一部分电路连接的第二和第三部分电路。第一部分电路具有相同电阻值的第一排K电阻器和为电阻器提供的开关组，以在所述K个电阻器中选择“K-1”电阻器，并将所选择的电阻器与所述第二和第三部分串联连接电路。第二部分电路具有第二排L电阻器，分别与所述电阻器串联连接的第一组开关，以及与所述串联连接的第二排电阻器和所述第一组开关并联连接的第二组开关，分别。第三部分电路具有第三排L电阻器，分别与所述电阻器串联的第三组开关，以及与所述串联连接的第三排电阻器和所述第三组开关并联连接的第四组开关，分别。因此，D / A转换器可以减少其占用面积，并且增加要在晶片上制造的D / A转换器芯片的数量，从而降低D / A转换器的成本。

6. 发明授权

US08441312B2 Reference current generating circuit 有权
标题翻译：参考电流发生电路
公开(公告)号：US08441312B2
公开(公告)日：2013-05-14
申请号：US13044316
申请日：2011-03-09
申请人： Tachio Yuasa
发明人： Tachio Yuasa
IPC分类号： G05F1/10
CPC分类号： G05F3/24
摘要： A reference current generating circuit has: first and second current mirror circuits and first and second output terminals. The first current mirror circuit has: a first transistor of a first polarity being an input-side transistor; and a first resistor connected between a gate of the first transistor and a power supply terminal. The second current mirror circuit has a second transistor of a second polarity being an input-side transistor. An output node of the first current mirror circuit is connected to an input node of the second current mirror circuit, and an input node of the first current mirror circuit is connected to an output node of the second current mirror circuit. A control voltage applied to the gate of the first transistor is output from the first output terminal. A control voltage applied to a gate of the second transistor is output from the second output terminal.
摘要翻译：参考电流产生电路具有：第一和第二电流镜电路以及第一和第二输出端。第一电流镜电路具有：第一极性的第一晶体管是输入侧晶体管; 以及连接在第一晶体管的栅极和电源端子之间的第一电阻器。第二电流镜电路具有作为输入侧晶体管的第二极性的第二晶体管。第一电流镜电路的输出节点连接到第二电流镜电路的输入节点，第一电流镜电路的输入节点连接到第二电流镜电路的输出节点。从第一输出端子输出施加到第一晶体管的栅极的控制电压。从第二输出端子输出施加到第二晶体管的栅极的控制电压。

7. 发明授权

US08026756B2 Bandgap voltage reference circuit 失效
标题翻译：带隙电压参考电路
公开(公告)号：US08026756B2
公开(公告)日：2011-09-27
申请号：US12457964
申请日：2009-06-26
申请人： Tachio Yuasa
发明人： Tachio Yuasa
IPC分类号： G05F1/10 , G05F3/02
CPC分类号： G05F3/30
摘要： A voltage reference circuit is provided with: an operational amplifier circuit; first and second resistor elements; first and second diodes; and first and second transistors. The first resistor element and the first diode are connected in series between a first input terminal of the operational amplifier circuit and a reference level node. The second resistor element and the second diode are connected in series between a second input terminal of the operational amplifier circuit and the reference level node. The first transistor is connected between a power supply node and the first input terminal of the operational amplifier circuit and has a control electrode receiving an output of the operational amplifier circuit. The second transistor is connected between the power supply node and the second input terminal of the operational amplifier circuit and has a control electrode receiving the output of the operational amplifier circuit. The value of R12·ln(n11·n22)/(R12·n12·R11) is adjusted to approximately 23.25, where R11 and R12 are resistance values of the first and second resistor elements, n11 is a ratio of an area of a p-n junction of the second diode to an area of a p-n junction of the first diode, and n12 is a ratio of a W/L ratio of the first transistor to a W/L ratio of the second transistor.
摘要翻译：电压参考电路具有：运算放大器电路; 第一和第二电阻元件; 第一和第二二极管; 以及第一和第二晶体管。第一电阻元件和第一二极管串联连接在运算放大器电路的第一输入端和基准电平节点之间。第二电阻元件和第二二极管串联连接在运算放大器电路的第二输入端和参考电平节点之间。第一晶体管连接在电源节点和运算放大器电路的第一输入端之间，并具有接收运算放大器电路的输出的控制电极。第二晶体管连接在运算放大器电路的电源节点和第二输入端之间，并具有接收运算放大器电路的输出的控制电极。 R12·ln（n11·n22）/（R12·n12·R11）的值被调整为大约23.25，其中R11和R12是第一和第二电阻元件的电阻值，n11是pn的面积比第二二极管与第一二极管的pn结的区域的结，n12是第一晶体管的W / L比与第二晶体管的W / L比的比。

8. 发明授权

US07816989B2 Differential amplifier 有权
标题翻译：差分放大器
公开(公告)号：US07816989B2
公开(公告)日：2010-10-19
申请号：US12379679
申请日：2009-02-26
申请人： Tachio Yuasa
发明人： Tachio Yuasa
IPC分类号： H03F3/45
CPC分类号： H03F3/45188 , H03F3/3066 , H03F3/45116 , H03F3/45215 , H03F2203/45091 , H03F2203/45366 , H03F2203/45644 , H03F2203/45648
摘要： A differential amplifier includes a first differential pair formed by transistors of a first conductivity type, to receive input signals and output first differential-mode currents, a first current amplifier section to output a first output source current and a first output sink current to a first output terminal and a second output terminal, respectively, based on the first differential-mode currents, a second differential pair formed by transistors of a second conductivity type, to receive the input signals and output second differential-mode currents, and a second current amplifier section to output a second output source current and a second output sink current to the first output terminal and the second output terminal, respectively, based on the second differential-mode currents.
摘要翻译：差分放大器包括由第一导电类型的晶体管形成的第一差分对，用于接收输入信号并输出第一差模电流;第一电流放大器部分，将第一输出源电流和第一输出吸收电流输出到第一输出端子和第二输出端子，分别基于第一差分电流，由第二导电类型的晶体管形成的第二差分对，以接收输入信号并输出第二差分电流;以及第二电流放大器部分，分别基于第二差模电流将第二输出源电流和第二输出吸收电流分别输出到第一输出端和第二输出端。

9. 发明授权

US07688140B2 Differential amplifier circuit 有权
标题翻译：差分放大电路
公开(公告)号：US07688140B2
公开(公告)日：2010-03-30
申请号：US11905374
申请日：2007-09-28
申请人： Tachio Yuasa
发明人： Tachio Yuasa
IPC分类号： H03F3/45
CPC分类号： H03F3/4521 , H03F3/3022 , H03F3/45219 , H03F2200/513 , H03F2203/30147 , H03F2203/30153 , H03F2203/45512
摘要： Disclosed is a differential amplifier circuit that comprises: a first differential pair of a first conductivity type having an input pair connected to respective input terminals and an output pair connected to a load-element pair; a second differential pair of a second conductivity type having an input pair connected to the respective input terminals and an output pair connected to a load-element pair; a first output transistor connected between a first power supply and an output terminal and having a control terminal connected to a first output of the first differential pair; and a second output transistor connected between a second power supply and the output terminal and having a control terminal connected to a first output of the second differential pair. A current having a value that is the result of adding a current, which is the result of reflecting a current of the second output of the second differential pair by a current mirror, to a current of the first output of the first differential pair, is passed into the load element connected to the first output of the first differential pair. A current having a value that is the result of adding a current, which is the result of reflecting a current of the second output of the first differential pair by a current mirror, to a current of the first output of the second differential pair, is passed into the load element connected to the first output of the second differential pair.
摘要翻译：公开了一种差分放大器电路，包括：第一导电类型的第一差分对，其具有连接到相应输入端的输入对和连接到负载元件对的输出对; 第二导电类型的第二差分对，其具有连接到各个输入端子的输入对和连接到负载元件对的输出对; 连接在第一电源和输出端之间并具有连接到第一差分对的第一输出的控制端的第一输出晶体管; 以及第二输出晶体管，连接在第二电源和输出端之间，并且具有连接到第二差分对的第一输出的控制端。具有作为将由电流镜反映第二差分对的第二输出的电流的结果的电流加到第一差分对的第一输出的电流的结果的值的电流是传递到连接到第一差分对的第一输出的负载元件。具有作为将由电流镜反射第一差分对的第二输出的电流的结果的电流加到第二差分对的第一输出的电流的结果的值的电流是传递到连接到第二差分对的第一输出的负载元件。

10. 发明授权

US5721513A Gain controlled amplification circuit having differential amplifier 失效
标题翻译：具有差分放大器的增益控制放大电路
公开(公告)号：US5721513A
公开(公告)日：1998-02-24
申请号：US656420
申请日：1996-05-30
申请人： Tachio Yuasa
发明人： Tachio Yuasa
IPC分类号： H03M1/18 , H03G1/00 , H03G3/10 , H03G3/12
CPC分类号： H03G1/0088
摘要： An input signal is applied to a first input terminal of a differential amplifier through an input resistance, and a feedback signal is applied to the first input terminal through a feedback resistance. A reference potential is applied to a second input terminal of the differential amplifier. A capacitance element is connected between the second input terminal and a high potential power supply, and a capacitance element is connected between the second input terminal and a low potential power supply. The amplification ratio of an amplification circuit can be switched over multiple stages by switching the resistance values of the input resistance and the feedback resistance by semiconductor analog switches. When any fluctuation exists in a power supply voltage, the fluctuation component is applied to the first input terminal of the differential amplifier through the semiconductor analog switches and causes a fluctuation of the amplification ratio. This fluctuation component of the power supply voltage is applied to the second input terminal from the capacitance element connected to the second input terminal. Since the differential amplifier eliminates the in-phase component of the signal applied to the second input terminal, the influence of the fluctuation of the power supply voltage on the input signal can be restricted because the capacitance element is connected to the second input terminal.
摘要翻译：输入信号通过输入电阻施加到差分放大器的第一输入端，反馈信号通过反馈电阻施加到第一输入端。将参考电位施加到差分放大器的第二输入端。电容元件连接在第二输入端子和高电位电源之间，电容元件连接在第二输入端子和低电位电源之间。通过半导体模拟开关切换输入电阻的电阻值和反馈电阻，可以在多级切换放大电路的放大率。当电源电压存在波动时，通过半导体模拟开关将波动分量施加到差分放大器的第一输入端子，并引起放大率的波动。电源电压的这种波动分量从连接到第二输入端的电容元件施加到第二输入端。由于差分放大器消除了施加到第二输入端子的信号的同相分量，因为电容元件连接到第二输入端子，所以可以限制电源电压的波动对输入信号的影响。

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