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91. 发明授权

US5153529A Rail-to-rail input stage of an operational amplifier 失效
标题翻译：运行放大器的轨至轨输入级
公开(公告)号：US5153529A
公开(公告)日：1992-10-06
申请号：US753128
申请日：1991-08-30
申请人： Rikki Koda , Robert L. Vyne , Thomas D. Petty
发明人： Rikki Koda , Robert L. Vyne , Thomas D. Petty
IPC分类号： H03F3/30 , H03F3/45
CPC分类号： H03F3/3067 , H03F3/45121 , H03F3/4556 , H03F3/45587 , H03F2203/45014 , H03F2203/45028 , H03F2203/45058 , H03F2203/45212 , H03F2203/45466 , H03F2203/45478 , H03F2203/45571 , H03F2203/45676 , H03F2203/45732
摘要： An input stage of an operational amplifier uses current sources to allow first and second differential input transistor pairs to operate near the power supply rails. The output stage of the operational amplifier also operates within a saturation potential of the power supply rails. The first differential input transistor pair operates when the input signal is less than a predetermined threshold, while the second differential input transistor pair operates when the input signal is greater than the predetermined threshold. A detection circuit at the input terminals prevents phase inversion of the output signal should the inputs be driven beyond the power supply rails. A current cancellation circuit removes current variation induced by voltage changes at the output of the input stage and provides high gain and low input offset voltage.
摘要翻译：运算放大器的输入级使用电流源来允许第一和第二差分输入晶体管对在电源轨附近操作。运算放大器的输出级也在电源轨的饱和电位内工作。当输入信号小于预定阈值时，第一差分输入晶体管对工作，而当输入信号大于预定阈值时第二差分输入晶体管对工作。如果输入被驱动超过电源轨，则输入端子处的检测电路防止输出信号的相位反转。电流消除电路消除由输入级输出端的电压变化引起的电流变化，并提供高增益和低输入失调电压。

92. 发明授权

US5023567A Stability-compensated operational amplifier 失效
标题翻译：稳定运算放大器
公开(公告)号：US5023567A
公开(公告)日：1991-06-11
申请号：US533890
申请日：1990-06-06
申请人： Timothy G. O'Shaughnessy , Mike Spaur
发明人： Timothy G. O'Shaughnessy , Mike Spaur
IPC分类号： H03F1/08 , H03F3/45
CPC分类号： H03F3/45179 , H03F1/086 , H03F3/45381 , H03F3/45385 , H03F2203/45458 , H03F2203/45674 , H03F2203/45676
摘要： A stability-compensated, integrated-circuit operational amplifier has an open-loop gain versus frequency characteristic which provides stable and accurate closed-loop operation in numerous overall circuits including a CMOS circuit for producing a precision current as a reference to a digital-to-analog converter. The operational amplifier comprises an inverting node and a non-inverting node, and CMOS circuitry defining two differential amplifiers. Each differential amplifier is connected to the inverting node and the non-inverting node. The first differential amplifier has an output node, and produces on the output node an output potential that defines an output signal having a magnitude that is a function of the magnitude of the difference between a first potential at the inverting node and a second potential at the non-inverting node. The second differential amplifier is also connected to the inverting node and the non-inverting node. The second differential amplifier produces a compensation signal. The operational amplifier further includes capacitive circuitry for coupling the compensation signal to the non-inverting node.
摘要翻译：稳定补偿的集成电路运算放大器具有开环增益与频率特性，其在许多总体电路中提供稳定和精确的闭环操作，包括用于产生精密电流的CMOS电路，作为数字 - 模拟转换器。运算放大器包括反相节点和非反相节点，以及限定两个差分放大器的CMOS电路。每个差分放大器连接到反相节点和非反相节点。第一差分放大器具有输出节点，并且在输出节点上产生输出电位，该输出电位定义输出信号，该输出信号的幅度是反相节点处的第一电位和第二电位之间的差值的大小的函数非反相节点。第二差分放大器也连接到反相节点和非反相节点。第二个差分放大器产生补偿信号。运算放大器还包括用于将补偿信号耦合到非反相节点的电容电路。

93. 发明授权

US4893090A Amplifier arrangement 失效
标题翻译：放大器布置
公开(公告)号：US4893090A
公开(公告)日：1990-01-09
申请号：US241689
申请日：1988-09-07
申请人： Arnoldus J. J. Boudewijns
发明人： Arnoldus J. J. Boudewijns
IPC分类号： H03F3/34 , H03F3/345 , H03F3/45
CPC分类号： H03F3/45179 , H03F3/45188 , H03F2203/45024 , H03F2203/45182 , H03F2203/45244 , H03F2203/45676
摘要： A signal voltage applied between the input terminals is converted by means of a differential amplifier into two phase-opposed signal currents which are inverted by means of a differential-to-single-ended converter into a single-ended signal current. The converter comprises a first and a second transistor with a common gate electrode and a third and a fourth transistor also with a common gate electrode, while the drain electrode of the third transistor is connected to the common date electrode of the first and the second transistor. The common gate electrode of the third and the fourth transistor is maintained at a voltage which is equal to the sum of one threshold voltage and two saturation voltages by means of a further transistor whose gate electrode is connected to the drain electrode and to a bias current source. The output of the amplifier can be driven by means of this converter up to two saturation voltages of the negative supply terminal.

94. 发明授权

US4706036A Differential amplifier having ratioed load devices 失效
标题翻译：具有比例负载装置的差分放大器
公开(公告)号：US4706036A
公开(公告)日：1987-11-10
申请号：US944404
申请日：1986-12-22
申请人： Michael E. Rebeschini
发明人： Michael E. Rebeschini
IPC分类号： H03F3/30 , H03F3/45 , H03F3/16
CPC分类号： H03F3/3022 , H03F3/3027 , H03F3/45179 , H03F3/45183 , H03F2203/30021 , H03F2203/30057 , H03F2203/30126 , H03F2203/30138 , H03F2203/45182 , H03F2203/45221 , H03F2203/45631 , H03F2203/45676
摘要： A differential amplifier is provided which has a low systematic offset voltage and a small variation in quiescent current with respect to variations in processing and temperature while providing low input referred noise and good output drive capability. Each transistor of a differential input pair of transistors is coupled to a plurality of series-connected transistors which are fabricated with substantially equal control electrode dimensions to form composite load tranistors. An output stage having conventional source and sink transistors is coupled to the differential pair of transistors. The sink transistor is implemented as a composite transistor by a plurality of parallel-connected transistors, each also having substantially the same control electrode dimension. Since all the ratioed transistors have equal control electrode dimensions, variations over processing and temperature are minimized. The composite load transistors have a large effective gate length for low input referred noise, and the composite transistor of the output stage has a small effective gate length to provide good drive capability.
摘要翻译：提供了一种差分放大器，其具有低系统偏移电压和相对于处理和温度变化的静态电流的小变化，同时提供低输入参考噪声和良好的输出驱动能力。差分输入对晶体管的每个晶体管耦合到多个串联连接的晶体管，其以基本上相等的控制电极尺寸制造以形成复合负载晶体管。具有常规源极和漏极晶体管的输出级耦合到晶体管的差分对。宿晶体管通过多个并联连接的晶体管实现为复合晶体管，每个晶体管也具有基本上相同的控制电极尺寸。由于所有比例的晶体管具有相同的控制电极尺寸，所以使处理和温度的变化最小化。复合负载晶体管对于低输入参考噪声具有大的有效栅极长度，并且输出级的复合晶体管具有小的有效栅极长度以提供良好的驱动能力。

95. 发明授权

US3947778A Differential amplifier 失效
标题翻译：差分放大器
公开(公告)号：US3947778A
公开(公告)日：1976-03-30
申请号：US505101
申请日：1974-09-11
申请人： Perng Hsiao , Fuad H. Musa
发明人： Perng Hsiao , Fuad H. Musa
IPC分类号： H03F3/45 , H03F3/68
CPC分类号： H03F3/45744 , H03F3/45183 , H03F2203/45508 , H03F2203/45651 , H03F2203/45674 , H03F2203/45676 , H03F2203/45696
摘要： A family of differential amplifiers are described which utilize only MOSFET transistors as the active devices. These amplifiers exhibit an infinite input impedance and zero input offset and bias currents. The circuits are capable of operating over a wide range of DC supply voltages at extremely low DC current drain. A differential amplifier is shown which operates from a single positive DC supply voltage and which handles a wide range of input common mode voltage swings including some negative common mode voltages. Another amplifier is shown which operates from a combination of a single positive and a single negative supply voltage and which handles a wide range of positive and negative input common mode voltage swings.
摘要翻译：描述了仅使用MOSFET晶体管作为有源器件的差分放大器系列。这些放大器呈现无限的输入阻抗和零输入偏移和偏置电流。这些电路能够在极低的DC电流消耗下在宽范围的直流电源电压下工作。示出了从单个正直流电源电压操作并且处理包括一些负共模电压的宽范围的输入共模电压摆幅的差分放大器。示出了另一放大器，其从单个正电源电压和单个负电源电压的组合操作，并且其处理宽范围的正和负输入共模电压摆幅。

96. 发明授权

US09857816B2 Circuits and method for controlling transient fault conditions in a low dropout voltage regulator 有权
公开(公告)号：US09857816B2
公开(公告)日：2018-01-02
申请号：US15072591
申请日：2016-03-17
申请人： Dialog Semiconductor GmbH
发明人： Ambreesh Bhattad
IPC分类号： G05F1/575 , G05F1/56 , G05F1/46 , H03F3/45 , H02M1/32
CPC分类号： G05F1/575 , G05F1/462 , G05F1/56 , H02M1/32 , H03F3/45183 , H03F2200/555 , H03F2203/45314 , H03F2203/45636 , H03F2203/45674 , H03F2203/45676
摘要： An overshoot reduction circuit within a low dropout voltage regulator eliminates an overshoot at an output terminal resulting from a transient fault condition occurring at an input or output terminal. The overshoot reduction circuit monitors to sense if there is a transient fault condition occurring at the input or output terminal and provides a Miller capacitance at the output terminal of a differential amplifier of the low dropout voltage regulator to prevent the output of the differential amplifier from being discharged to ground during the transient. A control loop circuit balances current within an active load of the differential amplifier to clamp the output of the differential amplifier to its normal operating point. When the transient fault condition ends, the output voltage of the differential amplifier is set such that a pass transistor of the low dropout regulator responds quickly to resume the regulation to reduce or eliminate the overshoot.

97. 发明授权

US09356562B2 Family of slew-enhanced operational transconductance amplifiers 有权
标题翻译：一系列转换增强型运算跨导放大器
公开(公告)号：US09356562B2
公开(公告)日：2016-05-31
申请号：US14168647
申请日：2014-01-30
申请人： Apple Inc.
发明人： A Motamed
IPC分类号： H03F3/45 , H03F1/22
CPC分类号： H03F1/223 , H03F3/45188 , H03F3/45192 , H03F2200/234 , H03F2200/411 , H03F2203/45002 , H03F2203/45024 , H03F2203/45248 , H03F2203/45536 , H03F2203/45544 , H03F2203/45618 , H03F2203/45674 , H03F2203/45676 , H03F2203/45702
摘要： Operational transconductance amplifiers (OTAs) with enhanced slew rate are disclosed. An OTA can have a main amplifier and pre-amplifier gain stage to increase the effective transconductance and bandwidth of the OTA. The pre-amplifier and main amplifier can be coupled to enhance slew current without adding additional bias current to the main amplifier input stages. Pre-amplifier bias current can be recycled and redirected to the load. OTAs with enhanced slew rate can be particularly useful in applications requiring high-frequency switching of voltage levels to drive high capacitance lines. For example, an integrated touch sensor panel and display can be operated by alternatively applying a first voltage level to an electrode in a display mode and a second voltage level during a touch sensing mode using OTA sense or charge amplifiers with enhanced slew rate. Enhanced slew rate can increase the time available to demodulate a touch signal for improved system performance.
摘要翻译：公开了具有增强的转换速率的运算跨导放大器（OTA）。 OTA可以具有主放大器和前置放大器增益级，以增加OTA的有效跨导和带宽。前置放大器和主放大器可以耦合以增强转换电流，而不会向主放大器输入级增加额外的偏置电流。前置放大器偏置电流可以回收并重定向到负载。具有增强的转换速率的OTAs可以在需要高频切换电压电平以驱动高电容线的应用中特别有用。例如，可以通过在使用具有增强的转换速率的OTA感测或电荷放大器的触摸感测模式期间以显示模式和第二电压电平交替施加第一电压电平来操作集成的触摸传感器面板和显示器。增强的转换速率可以增加解调触摸信号的时间，以提高系统性能。

98. 发明申请

US20150194115A1 OUTPUT CIRCUIT, DATA DRIVER, AND DISPLAY DEVICE 有权
标题翻译：输出电路，数据驱动器和显示设备
公开(公告)号：US20150194115A1
公开(公告)日：2015-07-09
申请号：US14664076
申请日：2015-03-20
申请人： Renesas Electronics Corporation
发明人： Hiroshi Tsuchi
IPC分类号： G09G3/36 , G09G3/32
CPC分类号： G09G3/3677 , G09G3/3258 , G09G3/3291 , G09G3/3688 , G09G2300/0426 , G09G2310/0289 , G09G2310/0291 , G09G2330/021 , H03F1/0261 , H03F3/45179 , H03F3/4526 , H03F2200/18 , H03F2200/27 , H03F2203/45562 , H03F2203/45614 , H03F2203/45618 , H03F2203/45644 , H03F2203/45674 , H03F2203/45676 , H03F2203/45724 , H03F2203/45728
摘要： A display device includes an output circuit including a differential amplifier circuit, an output amplifier circuit that includes a first transistor of the first conduction type coupled between the first supply terminal and the output terminal, and including a control terminal coupled to the differential amplifier circuit, a first control circuit, an input terminal, an output terminal, and first to third supply terminals to which first to third supply voltages are applied, wherein the third supply voltage is set to a voltage between the first supply voltage and the second supply voltage, or the second supply voltage, and wherein the first control circuit includes a third transistor and a first switch which are coupled in series between the first supply terminal and the control terminal of the first transistor.
摘要翻译：显示装置包括：输出电路，包括差分放大器电路，输出放大器电路，其包括耦合在第一电源端子和输出端子之间的第一导电类型的第一晶体管，并且包括耦合到差分放大器电路的控制端子，第一控制电路，输入端子，输出端子和施加有第一至第三电源电压的第一至第三电源端子，其中第三电源电压被设置为第一电源电压和第二电源电压之间的电压，或第二电源电压，并且其中第一控制电路包括串联耦合在第一电源端子和第一晶体管的控制端子之间的第三晶体管和第一开关。

99. 发明申请

US20150171809A1 MOS TRANSISTORS HAVING LOW OFFSET VALUES, ELECTRONIC DEVICES INCLUDING THE SAME, AND METHODS OF FABRICATING THE SAME 有权
标题翻译：具有低偏移值的MOS晶体管，包括其的电子器件及其制造方法
公开(公告)号：US20150171809A1
公开(公告)日：2015-06-18
申请号：US14253493
申请日：2014-04-15
申请人： SK HYNIX INC.
发明人： Hyun Min SONG
IPC分类号： H03F3/45 , H01L29/06 , H01L29/423 , H01L27/088
CPC分类号： H01L27/088 , H01L21/761 , H01L21/76224 , H01L21/823437 , H01L21/823456 , H01L21/823481 , H01L29/0653 , H01L29/1083 , H01L29/1087 , H01L29/42376 , H01L29/4238 , H01L29/665 , H01L29/7833 , H01L29/78609 , H01L29/78696 , H03F3/45197 , H03F2203/45212 , H03F2203/45344 , H03F2203/45631 , H03F2203/45674 , H03F2203/45676
摘要： A MOS transistor includes a gate electrode disposed over an active region without overlapping with an isolation region, the active region including a channel region, the isolation region defining the active region, a source region and a drain region disposed in first and second portions of the active region, respectively, the first and second portions being disposed at first and second sides of the gate electrode, respectively, the first side opposing the second side, a first blocking region disposed in a third portion of the active region between a third side of the gate electrode and the isolation region and between the source and the drain region, and a second blocking region disposed in a fourth portion of the active region between a fourth side of the gate electrode and the isolation region and between the source and the drain region, the fourth side opposing the third side.
摘要翻译： MOS晶体管包括设置在有源区上而不与隔离区重叠的栅电极，有源区包括沟道区，限定有源区的隔离区，设置在第一和第二部分中的源区和漏区所述第一和第二部分分别设置在所述栅电极的第一和第二侧，所述第一侧与所述第二侧相对，所述第一阻挡区设置在所述有源区的第三部分之间，所述栅电极和所述隔离区以及所述源极和漏极区之间以及设置在所述有源区的第四部分中的所述栅电极和所述隔离区之间以及所述源极和漏极区之间的第二阻挡区，第四面反对第三面。

100. 发明授权

US09000844B2 Power efficient transconductance amplifier apparatus and systems 有权
标题翻译：功率有效的跨导放大器装置和系统
公开(公告)号：US09000844B2
公开(公告)日：2015-04-07
申请号：US13357203
申请日：2012-01-24
申请人： Charles Parkhurst
发明人： Charles Parkhurst
IPC分类号： H03F3/45
CPC分类号： H03F3/45 , H03F1/0266 , H03F1/342 , H03F3/45179 , H03F3/45183 , H03F2203/45362 , H03F2203/45481 , H03F2203/45562 , H03F2203/45674 , H03F2203/45676
摘要： Embodiments and methods herein operate as two-stage voltage controlled current sources (i.e., dynamic current sources) operating in class AB mode. Phase-delayed current injection circuits are associated with first-stage bias, second-stage bias, or both. The current injection circuits operate to quickly re-charge inter-stage parasitic capacitance associated with the active side of the class AB dynamic current source shortly after that side becomes inactive. Doing so quickly dissipates an otherwise slowly-decaying residual drive signal to prevent the output stage from continuing to conduct after the associated side of the current source becomes inactive. Excessive current consumption and possible destructive operation of the output stage are mitigated as a result.
摘要翻译：这里的实施例和方法作为在AB类模式下操作的两级电压控制电流源（即，动态电流源）。相位延迟电流注入电路与第一级偏置，第二级偏置或两者相关联。电流注入电路用于在该侧变为无效之后不久，快速重新充电与AB类动态电流源的有源侧相关的级间寄生电容。这样做很快消散了另外缓慢衰减的残留驱动信号，以防止在电流源的相关侧变为无效之后输出级继续进行。因此，可以减轻输出级的过度消耗电流和可能的破坏性操作。

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