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    Differential amplifier input stage capable of operating in excess of power supply voltage
    1.
    发明授权
    Differential amplifier input stage capable of operating in excess of power supply voltage 失效
    差分放大器输入级能够工作在超过电源电压

    公开(公告)号：US4378529A

    公开(公告)日：1983-03-29

    申请号：US300358

    申请日：1981-09-08

    Applicant: Robert C. Dobkin

    Inventor： Robert C. Dobkin

    IPC: H03F3/45

    CPC classification number: H03F3/45506 ,  H03F3/4508 ,  H03F2200/261 ,  H03F2203/45094 ,  H03F2203/45096

    Abstract: A pair of common base connected transistors have their emitters coupled to provide the input terminals of a differential amplifier. The collectors are coupled to a current mirror that provides a small current bias that operates the transistors at equal current densities. The common bases are coupled to a node that is driven to a level that causes the bases to track the emitters with a one V.sub.BE offset that will therefore automatically adjust to conform to the applied current. When a remotely grounded transducer is coupled to the amplifier input it can operate at a common mode potential outside of the span of the power supply that operates the amplifier.

    Abstract translation: 一对公共基极连接晶体管的发射极被耦合以提供差分放大器的输入端。 集电极耦合到电流镜，其提供以相等的电流密度操作晶体管的小电流偏置。 公共基座耦合到被驱动到使得基座跟踪具有一个VBE偏移的发射器的电平的水平，因此VBE偏移将因此自动调整以符合所施加的电流。 当远程接地的传感器耦合到放大器输入端时，它可以在操作放大器的电源跨度之外的共模电位下工作。

    Differential operational amplifier circuit correcting settling error for use in pipelined A/D converter
    2.
    发明授权
    Differential operational amplifier circuit correcting settling error for use in pipelined A/D converter 有权
    差分运算放大器电路校正用于流水线A / D转换器的建立误差

    公开(公告)号：US07898449B2

    公开(公告)日：2011-03-01

    申请号：US12562664

    申请日：2009-09-18

    Applicant: Shoji Kawahito ,  Kazutaka Honda ,  Yasuhide Shimizu ,  Kuniyuki Tani ,  Akira Kurauchi ,  Koji Sushihara ,  Koichiro Mashiko

    Inventor： Shoji Kawahito ,  Kazutaka Honda ,  Yasuhide Shimizu ,  Kuniyuki Tani ,  Akira Kurauchi ,  Koji Sushihara ,  Koichiro Mashiko

    IPC: H03M1/12

    CPC classification number: H03F3/45237 ,  H03F2203/45094 ,  H03F2203/45356 ,  H03F2203/45481 ,  H03F2203/45551

    Abstract: A telescopic differential operational amplifier circuit for use in a pipelined A/D converter is provided with two auxiliary differential amplifiers connected to two cascode circuits, each including cascode-connected first to fourth transistors. During the sampling phase, first and second switches are turned on to apply a predetermined bias voltage to the gates of first and fourth transistors, and the input terminal of the differential operational amplifier circuit is set to a common mode voltage. During the hold phase, the first and second switches are turned off so that a voltage of each of the gates of the first and fourth transistors change to follow an input signal inputted via the input terminal with coupling capacitors operating as a level shifter of the input signal. Then the differential operational amplifier circuit performs push-pull operation operative only in a transconductance drive region, and is prevented from operating in a slewing region.

    Abstract translation: 在流水线A / D转换器中使用的伸缩差分运算放大器电路设置有两个连接到两个共源共栅电路的辅助差分放大器，每个包括共源共栅连接的第一至第四晶体管。 在采样阶段期间，第一和第二开关导通以对第一和第四晶体管的栅极施加预定的偏置电压，并且差分运算放大器电路的输入端被设置为共模电压。 在保持阶段期间，第一和第二开关断开，使得第一和第四晶体管的每个栅极的电压改变为跟随经由输入端输入的输入信号，耦合电容器作为输入的电平转换器 信号。 然后，差分运算放大器电路仅在跨导驱动区域中执行推挽操作，并且防止在回转区域中操作。

    DIFFERENTIAL OPERATIONAL AMPLIFIER CIRCUIT CORRECTING SETTLING ERROR FOR USE IN PIPELINED A/D CONVERTER
    3.
    发明申请
    DIFFERENTIAL OPERATIONAL AMPLIFIER CIRCUIT CORRECTING SETTLING ERROR FOR USE IN PIPELINED A/D CONVERTER 有权
    用于管道A / D转换器的差分运算放大器电路校正设定错误

    公开(公告)号：US20100073214A1

    公开(公告)日：2010-03-25

    申请号：US12562664

    申请日：2009-09-18

    Applicant: Shoji KAWAHITO ,  Kazutaka Honda ,  Yasuhide Shimizu ,  Kuniyuki Tani ,  Akira Kurauchi ,  Koji Sushihara ,  Koichiro Mashiko

    Inventor： Shoji KAWAHITO ,  Kazutaka Honda ,  Yasuhide Shimizu ,  Kuniyuki Tani ,  Akira Kurauchi ,  Koji Sushihara ,  Koichiro Mashiko

    IPC: H03M1/12 ,  H03F3/45

    CPC classification number: H03F3/45237 ,  H03F2203/45094 ,  H03F2203/45356 ,  H03F2203/45481 ,  H03F2203/45551

    Abstract: A telescopic differential operational amplifier circuit for use in a pipelined A/D converter is provided with two auxiliary differential amplifiers connected to two cascode circuits, each including cascode-connected first to fourth transistors. During the sampling phase, first and second switches are turned on to apply a predetermined bias voltage to the gates of first and fourth transistors, and the input terminal of the differential operational amplifier circuit is set to a common mode voltage. During the hold phase, the first and second switches are turned off so that a voltage of each of the gates of the first and fourth transistors change to follow an input signal inputted via the input terminal with coupling capacitors operating as a level shifter of the input signal. Then the differential operational amplifier circuit performs push-pull operation operative only in a transconductance drive region, and is prevented from operating in a slewing region.

    Abstract translation: 在流水线A / D转换器中使用的伸缩差分运算放大器电路设置有两个辅助差分放大器，其连接到两个共源共栅电路，每个包括共源共栅连接的第一至第四晶体管。 在采样阶段期间，第一和第二开关导通以对第一和第四晶体管的栅极施加预定的偏置电压，并且差分运算放大器电路的输入端被设置为共模电压。 在保持阶段期间，第一和第二开关断开，使得第一和第四晶体管的每个栅极的电压改变为跟随经由输入端输入的输入信号，耦合电容器作为输入的电平转换器 信号。 然后，差分运算放大器电路仅在跨导驱动区域中执行推挽操作，并且防止在回转区域中操作。

    Wide common mode range comparator and method
    7.
    发明授权
    Wide common mode range comparator and method 失效
    宽共模范围比较器和方法

    公开(公告)号：US5789949A

    公开(公告)日：1998-08-04

    申请号：US719873

    申请日：1996-09-25

    Applicant: Raymond Louis Giordano ,  Harold Allen Wittlinger

    Inventor： Raymond Louis Giordano ,  Harold Allen Wittlinger

    IPC: H03F3/45 ,  H03K5/24 ,  H03K5/22

    CPC classification number: H03F3/45183 ,  H03F3/45085 ,  H03F3/4517 ,  H03F3/45269 ,  H03K5/2418 ,  H03F2203/45094 ,  H03F2203/45658 ,  H03F2203/45664

    Abstract: A transconductance amplifier suitable for the input stage of a comparator with the capability of amplifying input signals with common mode voltage components in a range including the entirety of its operating voltage. Operation at one voltage extreme is accomplished by use of a long tailed pair connection of a pair of bulk modulated FETs with gates at the input terminals of the amplifier. Operation at the other voltage extreme is accomplished by the use of a pair of FETs in a source follower mode to drive common gate transistors of opposite polarity, the gates of the FETs also being connected to the input terminals of the amplifier. A common high impedance load for the comparator is connected to current mirrors of the drains of both pairs of FETs in the amplifier. The circuit may be implemented with bipolar transistors and additional amplification provided. Methods of comparing voltages are also disclosed.

    Abstract translation: 一种跨导放大器，适用于比较器的输入级，具有在包括其整个工作电压的范围内以共模电压分量放大输入信号的能力。 通过使用一对体积调制FET的长尾对连接与放大器的输入端的栅极来实现在一个极端电压下的工作。 通过使用源极跟随器模式中的一对FET来驱动具有相反极性的公共栅极晶体管来实现另一电压极限处的操作，FET的栅极也连接到放大器的输入端。 用于比较器的常见高阻抗负载连接到放大器中两对FET的漏极的电流镜。 该电路可以用双极晶体管实现并且提供额外的放大。 还公开了比较电压的方法。

    Wide common mode range comparator and method
    8.
    发明授权
    Wide common mode range comparator and method 失效
    宽共模范围比较器和方法

    公开(公告)号：US5614852A

    公开(公告)日：1997-03-25

    申请号：US512417

    申请日：1995-08-08

    Applicant: Raymond L. Giordano ,  Harold A. Wittlinger

    Inventor： Raymond L. Giordano ,  Harold A. Wittlinger

    IPC: H03F3/45 ,  H03K5/24 ,  H03K5/22

    CPC classification number: H03F3/45183 ,  H03F3/45085 ,  H03F3/4517 ,  H03F3/45269 ,  H03K5/2418 ,  H03F2203/45094 ,  H03F2203/45658 ,  H03F2203/45664

    Abstract: A transconductance amplifier suitable for the input stage of a comparator with the capability of amplifying input signal with common mode voltage components in a range including the entirety of its operating voltage. Operation at one voltage extreme is accomplished by use of a long tailed pair connection of a pair of bulk modulated FETs with gates at the input terminals of the amplifier. Operation at the other voltage extreme is accomplished by the use of a pair of FETs in a source follower mode to drive common gate transistors of opposite polarity, the gates of the FETs also being connected to the input terminals of the amplifier. A common high impedance load for the comparator is connected to current mirrors of the drains of both pairs of FETs in the amplifier. The circuit may be implemented with bipolar transistors and additional amplification provided. Methods of comparing voltages are also disclosed.

    Abstract translation: 适用于比较器的输入级的跨导放大器，具有在包括其整个工作电压的范围内的共模电压分量放大输入信号的能力。 通过使用一对体积调制FET的长尾对连接与放大器的输入端的栅极来实现在一个极端电压下的工作。 通过使用源极跟随器模式中的一对FET来驱动具有相反极性的公共栅极晶体管来实现另一电压极限处的操作，FET的栅极也连接到放大器的输入端。 用于比较器的常见高阻抗负载连接到放大器中两对FET的漏极的电流镜。 该电路可以用双极晶体管实现并且提供额外的放大。 还公开了比较电压的方法。

    Low quiescent power, high output power rail-to rail amplifier output stages and methods for using same
    9.
    发明授权
    Low quiescent power, high output power rail-to rail amplifier output stages and methods for using same 失效
    低静态功率，高输出功率轨至轨放大器输出级及使用方法

    公开(公告)号：US5825228A

    公开(公告)日：1998-10-20

    申请号：US592976

    申请日：1996-01-29

    Applicant: William H. Gross

    Inventor： William H. Gross

    IPC: H03F3/30 ,  H03K17/66 ,  H03K17/60 ,  H03F3/26

    CPC classification number: H03K17/667 ,  H03F3/3067 ,  H03F2203/45094 ,  H03F2203/45232 ,  H03F2203/45242 ,  H03F2203/45366

    Abstract: Low quiescent power, high output power, rail-to-rail output stage circuits and methods are provided. The output stages are capable of providing output voltages that are substantially equal to the supply voltages (i.e., within one V.sub.CE SAT of both supply voltages) without a substantial increase in output circuit complexity and without a substantial increase in quiescent current. The output stages operate by providing a direct path for the drive signal to the output sinking transistor, and an additional, separate path for the drive signal to the output sourcing transistor. The sinking and sourcing paths are separated by a PNP transistor that gradually turns off during sinking to isolate that portion of the circuit so that the drive current to the sinking transistor is not reduced. Additional embodiments are provided where additional components are utilized to further increase the maximum sink and source currents without a significant increase in quiescent current or reduction in output swing.

    Abstract translation: 提供低静态功率，高输出功率，轨到轨输出级电路和方法。 输出级能够提供基本上等于电源电压（即，在两个电源电压的一个VCE + E，uns + EE SAT）内的输出电压，而输出电路复杂度并没有显着增加 当前。 输出级通过为输出吸收晶体管提供驱动信号的直接路径以及用于驱动信号到输出源晶体管的附加单独路径来进行操作。 吸收和引出路径被PNP晶体管分离，PNP晶体管在吸收期间逐渐关闭，以隔离电路的该部分，使得到沉没晶体管的驱动电流不会降低。 提供了另外的实施例，其中使用附加组件来进一步增加最大吸收和电流电流，而不会明显增加静态电流或降低输出摆幅。

    Differential common base amplifier with feed forward circuit
    10.
    发明授权
    Differential common base amplifier with feed forward circuit 失效
    差分普通基放大器，带前馈电路

    公开(公告)号：US4596958A

    公开(公告)日：1986-06-24

    申请号：US654959

    申请日：1984-09-26

    Applicant: Jerald G. Graeme ,  Steven D. Millaway

    Inventor： Jerald G. Graeme ,  Steven D. Millaway

    IPC: H03F3/45

    CPC classification number: H03F3/45278 ,  H03F3/45367 ,  H03F2203/45094 ,  H03F2203/45096 ,  H03F2203/45188 ,  H03F2203/45224 ,  H03F2203/45274 ,  H03F2203/45648

    Abstract: A differential common base amplifier circuit includes first and second source follower field effect transistors that apply a differential input signal between the emitters of first and second bipolar transistors having a common base connection. An output circuit connected to the collector of the first bipolar transistor includes a bipolar emitter follower transistor having its emitter connected to a first field effect transistor which is connected to the emitter of the emitter follower transistor. The gate of the first field effect transistor is connected to the gate of one of the source follower field effect transistors. Process-caused variations in the gate to source voltage characteristic of the second source follower field effect transistor and the first field effect transistor are applied equally to the emitter and collector of the second bipolar transistor. This avoids input offset errors due to base width variations in the second bipolar transistor. Feed-forward signals coupled to the emitter of the emitter follower transistor in response to the input signal prevent roll off of the frequency response of the differential common base amplifier, due to the high frequency response of the emitter follower transistor when operated in what is, in effect, a common base configuration.

    Abstract translation: 差分公共基本放大器电路包括第一和第二源极跟随器场效应晶体管，其在具有公共基极连接的第一和第二双极晶体管的发射极之间施加差分输入信号。 连接到第一双极晶体管的集电极的输出电路包括双极射极跟随器晶体管，其双极射极跟随器晶体管的发射极连接到与射极跟随器晶体管的发射极连接的第一场效应晶体管。 第一场效应晶体管的栅极连接到源极跟随器场效应晶体管之一的栅极。 第二源极跟随器场效应晶体管和第一场效应晶体管的栅极到源极电压特性的工艺引起的变化被均等地施加到第二双极晶体管的发射极和集电极。 这避免了由于第二双极晶体管的基极宽度变化导致的输入偏移误差。 响应于输入信号耦合到射极跟随器晶体管的发射极的前馈信号由于射极跟随器晶体管的操作时的高频率响应而阻止差分公共基极放大器的频率响应的下降， 实际上，共同的基本配置。

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