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11. 发明授权

US07250819B2 Input tracking current mirror for a differential amplifier system 有权
标题翻译：用于差分放大器系统的输入跟踪电流镜
公开(公告)号：US07250819B2
公开(公告)日：2007-07-31
申请号：US11304326
申请日：2005-12-15
申请人： Daniel F. Kelly , Lawrence A. Singer
发明人： Daniel F. Kelly , Lawrence A. Singer
IPC分类号： H03F3/45
CPC分类号： H03F3/45183 , G05F3/262 , H03F2200/453 , H03F2203/45021 , H03F2203/45112 , H03F2203/45244 , H03F2203/45354 , H03F2203/45454 , H03F2203/45476 , H03F2203/45484
摘要： An input tracking current mirror for a differential amplifier system includes a current mirror having an input leg and an output leg, a differential amplifier including a first set of at least two transconductance components, each having at least one input terminal for receiving input signals, the first set of at least two transconductance components having a first common node connected to the output leg which has a first voltage that is a function of the input signals, and a tracking circuit including a second set of at least two transconductance components each having at least one input terminal for receiving the input signals, the second set of at least two transconductance components, having a second common node connected to the input leg which has a second voltage that is a function of the input signals, the tracking circuit driving the second voltage on the input leg to track the first voltage on the output leg with variations in the input signals.
摘要翻译：用于差分放大器系统的输入跟踪电流镜包括具有输入支路和输出支路的电流镜，差分放大器，包括至少两个跨导分量的第一组，每个具有至少一个用于接收输入信号的输入端，第一组至少两个跨导部件，具有连接到输出支路的第一公共节点，该第一公共节点具有作为输入信号的函数的第一电压，以及跟踪电路，包括至少两个跨导部件的第二组，用于接收输入信号的一个输入端，所述第二组至少两个跨导分量，具有连接到所述输入支路的第二公共节点，所述第二公共节点具有作为所述输入信号的函数的第二电压，所述跟踪电路驱动所述第二电压在输入支路上跟踪输入端子上的第一个电压，输入信号的变化。

12. 发明授权

US07064602B2 Dynamic gain compensation and calibration 有权
标题翻译：动态增益补偿和校准
公开(公告)号：US07064602B2
公开(公告)日：2006-06-20
申请号：US10840724
申请日：2004-05-05
申请人： Huy Nguyen
发明人： Huy Nguyen
IPC分类号： G05F1/10
CPC分类号： H03F3/45183 , H03F3/45632 , H03F2203/45048 , H03F2203/45484
摘要： Described are methods and circuits that reduce or eliminate the impact of power-supply fluctuations on circuit performance. IC dies include compensation circuitry that compares local power-supply voltages to relatively stable reference voltages, such as unloaded distributed supply voltages, to sense local supply-voltage fluctuations. Based upon this comparison, the compensation circuitry adjusts circuit characteristics that might otherwise suffer performance degradation. Receivers in accordance with some embodiments automatically tailoring their gain to the output characteristics of a number of possible transmitter types with which the receivers may be expected to communicate.
摘要翻译：描述了减少或消除电源波动对电路性能的影响的方法和电路。 IC芯片包括补偿电路，其将局部电源电压与相对稳定的参考电压（例如无负载分布式电源电压）进行比较，以感测局部电源电压波动。基于这种比较，补偿电路调整可能会遭受性能下降的电路特性。根据一些实施例的接收机自动地将其增益调整到接收机可以预期与之通信的多个可能的发射机类型的输出特性。

13. 发明申请

US20030052731A1 Linear voltage subtractor/adder circuit and MOS differential amplifier circuit therefor 有权
公开(公告)号：US20030052731A1
公开(公告)日：2003-03-20
申请号：US10234129
申请日：2002-09-05
申请人： NEC CORPORATION
发明人： Katsuji Kimura
IPC分类号： G06G007/12
CPC分类号： H03F3/45717 , G06G7/14 , H03F3/45183 , H03F3/4565 , H03F3/4569 , H03F3/45708 , H03F3/45739 , H03F2203/45456 , H03F2203/45484 , H03F2203/45566 , H03F2203/45612 , H03F2203/45702
摘要： A voltage subtractor/adder circuit comprises a differential pair having first and second MOS transistors. Gate electrodes of the first and second MOS transistors form input terminals for receiving an input differential voltage. Drain electrodes of the first and second MOS transistors form output terminals for outputting a subtraction output signal. Source electrodes of the first and second MOS transistors are commonly coupled to form an output terminal for addition output voltage. The sum of currents flowing through the first and second MOS transistors increases in proportion to the square of the input differential voltage. It is also possible to drive the differential pair by a constant current source. A level shifter may be provided for level-shifting the addition output voltage from the commonly coupled source electrodes.

14. 发明授权

US5115206A Merged differential amplifier and current source 失效
标题翻译：合并的差分放大器和电流源
公开(公告)号：US5115206A
公开(公告)日：1992-05-19
申请号：US610639
申请日：1990-11-08
申请人： William D. Mack , Daniel J. Linebarger
发明人： William D. Mack , Daniel J. Linebarger
IPC分类号： H03F3/45
CPC分类号： H03F3/45085 , H03F3/45538 , H03F2203/45484 , H03F2203/45498 , H03F2203/45612
摘要： The tail current of a differential transistor pair (12 and 14) is controlled by a feed-back means (40) that couples the pair's tail node (16) to the control input of each transistor for controlling a biasing current through each transistor. The control input of each transistor further receives an input signal in addition to an output signal of the feed-back means. As a result, the circuit has a stable and accurate tail current, and in addition is suitable for a low-voltage supply or for high-current operation.
摘要翻译：差分晶体管对（12和14）的尾部电流由反馈装置（40）控制，反馈装置将对的尾部节点（16）耦合到每个晶体管的控制输入端，以控制通过每个晶体管的偏置电流。除了反馈装置的输出信号之外，每个晶体管的控制输入还接收输入信号。结果，该电路具有稳定和精确的尾电流，此外还适用于低电压供电或高电流运行。

15. 发明授权

US07511565B2 Integrated circuit apparatus and method of compensating a current 有权
标题翻译：集成电路装置及补偿电流的方法
公开(公告)号：US07511565B2
公开(公告)日：2009-03-31
申请号：US11455376
申请日：2006-06-19
申请人： Fesseha Tessera Seifu , Marco Fornasari , Samir Aboulhouda
发明人： Fesseha Tessera Seifu , Marco Fornasari , Samir Aboulhouda
IPC分类号： G05F1/10 , H03F3/45
CPC分类号： H03F1/301 , H03F3/45085 , H03F3/45179 , H03F3/45484 , H03F2203/45286 , H03F2203/45482 , H03F2203/45484
摘要： An integrated circuit comprises a gain stage circuit coupled to a compensation circuit. Both the gain stage circuit and the compensation circuit respectively comprise a first current source and a second current source that are subject to the same process variations. A negative feedback circuit is used to generate a corrective current in relation to the second current source, indicative of a current that needs to flow through a load in addition to a current flowing through the second current source in order for a variable voltage to be substantially equal to a reference voltage used to drive the first and second current sources. A compensating current corresponding to the corrective current generated for the second current source is applied to the first current source to compensate for process variation in the gain stage circuit in respect to the first current source.
摘要翻译：集成电路包括耦合到补偿电路的增益级电路。增益级电路和补偿电路都分别包括受到相同工艺变化的第一电流源和第二电流源。使用负反馈电路来产生相对于第二电流源的校正电流，其指示除了流过第二电流源的电流之外还需要流过负载的电流，以使可变电压基本上等于用于驱动第一和第二电流源的参考电压。与第二电流源产生的校正电流相对应的补偿电流被施加到第一电流源，以补偿增益级电路相对于第一电流源的工艺变化。

16. 发明授权

US07391263B2 Operational amplifier 有权
标题翻译：运算放大器
公开(公告)号：US07391263B2
公开(公告)日：2008-06-24
申请号：US11511333
申请日：2006-08-29
申请人： Masayuki Koizumi , Hiroyuki Shibayama
发明人： Masayuki Koizumi , Hiroyuki Shibayama
IPC分类号： H03F3/45
CPC分类号： H03F3/45183 , H03F2200/453 , H03F2200/78 , H03F2203/45366 , H03F2203/45454 , H03F2203/45466 , H03F2203/45484 , H03F2203/45702
摘要： An operational amplifier 1 is provided with differential amplifier 2, replica amplifier 3, voltage-current converting circuit 4, reference current source 5 and comparator 6. Differential amplifier 2 includes P-channel MOS transistors PT1 and PT2, gate and drain electrodes of which are connected to each other to function as loads, and N-channel MOS transistors NT1, NT2 and NT3. Replica amplifier 3 is identical in structure to differential amplifier and also includes P-channel MOS transistors PT11 and PT12, gate and drain electrodes of which are connected to each other to function as loads, and N-channel MOS transistors NT11, NT12 and NT13. Voltage-current converting circuit 4 converts output voltages of replica amplifier 3 to current Irep. Comparator 6 compares output current Irep of voltage-current converting circuit 4 with reference current Iref of reference current source 5 and supplies compared current Ico to differential amplifier 2 to keep bias current Ibias of differential amplifier 2 constant.
摘要翻译：运算放大器1设置有差分放大器2，复制放大器3，电压电流转换电路4，参考电流源5和比较器6。差分放大器2包括P沟道MOS晶体管PT 1和PT 2，栅极和漏极彼此连接起来用作负载，N沟道MOS晶体管NT1，NT2和NT3。复制放大器3在结构上与差分放大器相同，并且还包括P沟道MOS晶体管PT 11和PT 12，栅极和漏极彼此连接以用作负载，并且N沟道MOS晶体管NT 11，NT 12和NT 13。电压电流转换电路4将复制放大器3的输出电压转换为电流Irep。比较器6将电压 - 电流转换电路4的输出电流Irep与参考电流源5的参考电流Iref进行比较，并将比较电流Ico提供给差分放大器2，以保持差分放大器2的偏置电流Ibias恒定。

17. 发明申请

US20070194843A1 DETECTING AMPLIFIER OUT-OF-RANGE CONDITIONS 有权
标题翻译：检测放大器超范围的条件
公开(公告)号：US20070194843A1
公开(公告)日：2007-08-23
申请号：US11462842
申请日：2006-08-07
申请人： Viola Schaffer , Mikhail Ivanov
发明人： Viola Schaffer , Mikhail Ivanov
IPC分类号： G01R19/00
CPC分类号： H03F3/303 , H03F3/45183 , H03F2203/45478 , H03F2203/45484
摘要： Out-of-range conditions are detected in amplifier CMOS or BiCMOS circuitry that includes a control transistor (MS) connected in series with a cascode transistor (MSC), and a differential amplifier (A1) with an inverting input connected to the node between the control transistor and the cascode transistor, a non-inverting input connected to a reference voltage source (VRDS) and an output connected to the gate of the cascode transistor (MSC). The voltage at the output of the differential amplifier (A1) is monitored, and an error condition is determined when the voltage exceeds or drops below a predetermined threshold value. The invention considerably widens the useful operating range, without requiring sophisticated or complex detection circuitry.
摘要翻译：在包括与共源共栅晶体管（M SUB SC）串联连接的控制晶体管（M SUB S S S）的放大器CMOS或BiCMOS电路中检测超范围条件，以及具有连接到控制晶体管和共源共栅晶体管之间的节点的反相输入的差分放大器（A 1），连接到参考电压源（VRDS DS）的非反相输入和连接的输出到共源共栅晶体管（M SUB SC）的栅极。监视差分放大器（A 1）输出端的电压，当电压超过或低于预定阈值时，确定出错状态。本发明显着地拓宽了有用的操作范围，而不需要复杂的或复杂的检测电路。

18. 发明申请

US20070057724A1 Operational amplifier 有权
标题翻译：运算放大器
公开(公告)号：US20070057724A1
公开(公告)日：2007-03-15
申请号：US11511333
申请日：2006-08-29
申请人： Masayuki Koizumi , Hiroyuki Shibayama
发明人： Masayuki Koizumi , Hiroyuki Shibayama
IPC分类号： H03F3/45
CPC分类号： H03F3/45183 , H03F2200/453 , H03F2200/78 , H03F2203/45366 , H03F2203/45454 , H03F2203/45466 , H03F2203/45484 , H03F2203/45702
摘要： An operational amplifier 1 is provided with differential amplifier 2, replica amplifier 3, voltage-current converting circuit 4, reference current source 5 and comparator 6. Differential amplifier 2 includes P-channel MOS transistors PT1 and PT2, gate and drain electrodes of which are connected to each other to function as loads, and N-channel MOS transistors NT1, NT2 and NT3. Replica amplifier 3 is identical in structure to differential amplifier and also includes P-channel MOS transistors PT11 and PT12, gate and drain electrodes of which are connected to each other to function as loads, and N-channel MOS transistors NT11, NT12 and NT13. Voltage-current converting circuit 4 converts output voltages of replica amplifier 3 to current Irep. Comparator 6 compares output current Irep of voltage-current converting circuit 4 with reference current Iref of reference current source 5 and supplies compared current Ico to differential amplifier 2 to keep bias current Ibias of differential amplifier 2 constant.
摘要翻译：运算放大器1设置有差分放大器2，复制放大器3，电压电流转换电路4，参考电流源5和比较器6。差分放大器2包括P沟道MOS晶体管PT 1和PT 2，栅极和漏极彼此连接起来用作负载，N沟道MOS晶体管NT1，NT2和NT3。复制放大器3在结构上与差分放大器相同，并且还包括P沟道MOS晶体管PT 11和PT 12，栅极和漏极彼此连接以用作负载，并且N沟道MOS晶体管NT 11，NT 12和NT 13。电压电流转换电路4将复制放大器3的输出电压转换为电流Irep。比较器6将电压 - 电流转换电路4的输出电流Irep与参考电流源5的参考电流Iref进行比较，并将比较电流Ico提供给差分放大器2，以保持差分放大器2的偏置电流Ibias恒定。

19. 发明申请

US20060132239A1 Input tracking current mirror for a differential amplifier system 有权
标题翻译：用于差分放大器系统的输入跟踪电流镜
公开(公告)号：US20060132239A1
公开(公告)日：2006-06-22
申请号：US11304326
申请日：2005-12-15
申请人： Daniel Kelly , Lawrence Singer
发明人： Daniel Kelly , Lawrence Singer
IPC分类号： H03F3/45
CPC分类号： H03F3/45183 , G05F3/262 , H03F2200/453 , H03F2203/45021 , H03F2203/45112 , H03F2203/45244 , H03F2203/45354 , H03F2203/45454 , H03F2203/45476 , H03F2203/45484
摘要： An input tracking current mirror for a differential amplifier system includes a current mirror having an input leg and an output leg, a differential amplifier including a first set of at least two transconductance components, each having at least one input terminal for receiving input signals, the first set of at least two transconductance components having a first common node connected to the output leg which has a first voltage that is a function of the input signals, and a tracking circuit including a second set of at least two transconductance components each having at least one input terminal for receiving the input signals, the second set of at least two transconductance components, having a second common node connected to the input leg which has a second voltage that is a function of the input signals, the tracking circuit driving the second voltage on the input leg to track the first voltage on the output leg with variations in the input signals.
摘要翻译：用于差分放大器系统的输入跟踪电流镜包括具有输入支路和输出支路的电流镜，差分放大器，包括至少两个跨导分量的第一组，每个具有至少一个用于接收输入信号的输入端，第一组至少两个跨导部件，具有连接到输出支路的第一公共节点，该第一公共节点具有作为输入信号的函数的第一电压，以及跟踪电路，包括至少两个跨导部件的第二组，用于接收输入信号的一个输入端，所述第二组至少两个跨导分量，具有连接到所述输入支路的第二公共节点，所述第二公共节点具有作为所述输入信号的函数的第二电压，所述跟踪电路驱动所述第二电压在输入支路上跟踪输入端子上的第一个电压，输入信号的变化。

20. 发明申请

US20050248389A1 Dynamic gain compensation and calibration 有权
标题翻译：动态增益补偿和校准
公开(公告)号：US20050248389A1
公开(公告)日：2005-11-10
申请号：US10840724
申请日：2004-05-05
申请人： Huy Nguyen
发明人： Huy Nguyen
IPC分类号： H03F1/30 , H03G3/20 , H03G3/30 , G05F1/10
CPC分类号： H03F3/45183 , H03F3/45632 , H03F2203/45048 , H03F2203/45484
摘要： Described are methods and circuits that reduce or eliminate the impact of power-supply fluctuations on circuit performance. IC dies include compensation circuitry that compares local power-supply voltages to relatively stable reference voltages, such as unloaded distributed supply voltages, to sense local supply-voltage fluctuations. Based upon this comparison, the compensation circuitry adjusts circuit characteristics that might otherwise suffer performance degradation. Receivers in accordance with some embodiments automatically tailoring their gain to the output characteristics of a number of possible transmitter types with which the receivers may be expected to communicate.
摘要翻译：描述了减少或消除电源波动对电路性能的影响的方法和电路。 IC芯片包括补偿电路，其将局部电源电压与相对稳定的参考电压（例如无负载分布式电源电压）进行比较，以感测局部电源电压波动。基于这种比较，补偿电路调整可能会遭受性能下降的电路特性。根据一些实施例的接收机自动地将其增益调整到接收机可以预期与之通信的多个可能的发射机类型的输出特性。

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