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1. 发明授权

US08396089B2 Device and method for improved settling time in multiplexed input systems 有权
标题翻译：多路复用输入系统中改善建立时间的装置和方法
公开(公告)号：US08396089B2
公开(公告)日：2013-03-12
申请号：US12359653
申请日：2009-01-26
申请人： Viola Schaffer , Heinz-Jürgen Metzger , Michael V. Ivanov
发明人： Viola Schaffer , Heinz-Jürgen Metzger , Michael V. Ivanov
IPC分类号： H04J3/02
CPC分类号： H03F3/68 , H03F1/52 , H03F3/45475 , H03F2200/165 , H03F2200/261 , H03F2200/441 , H03F2203/45138
摘要： An acquisition device and corresponding method for operating the acquisition system are provided. Generally, during operation a plurality of input signals are filtered and multiplexed. The multiplexed input signals are then applied to an amplifier stage; however, when a clamping condition for the amplifier stage occurs, a buffer is switched into a signal path between a multiplexer and an amplifier stage so as to generally reduce the current draw on the input filters.
摘要翻译：提供了一种用于操作采集系统的采集装置和相应方法。通常，在操作期间，对多个输入信号进行滤波和多路复用。然后将复用的输入信号施加到放大器级; 然而，当发生用于放大器级的钳位条件时，缓冲器被切换到多路复用器和放大器级之间的信号路径，以便通常减少输入滤波器上的电流消耗。

2. 发明授权

US06556077B2 Instrumentation amplifier with improved AC common mode rejection performance 有权
公开(公告)号：US06556077B2
公开(公告)日：2003-04-29
申请号：US09813619
申请日：2001-03-20
申请人： Viola Schaffer , Michael V. Ivanov
发明人： Viola Schaffer , Michael V. Ivanov
IPC分类号： H03F345
CPC分类号： H03F1/083 , H03F3/4595 , H03F2200/261
摘要： A method and apparatus for improving the AC common mode rejection performance of monolithic two op-amp instrumentation amplifiers is disclosed. A new approach to designing the first op-amp of an instrumentation amplifier is provided wherein the frequency of the first op-amp is manipulated such that the dominant pole is pushed out to higher frequencies than is possible using traditional methods while maintaining good open loop gain and closed loop stability. One way to achieve this is by designing the first op-amp such that it has two dominant, low frequency poles and a higher frequency zero to provide stability. With this design of a first op-amp, the range of high common mode rejection ratio is extended to frequencies an order of magnitude higher than achievable by conventional means without additional requirements for bandwidth, power or die area. Utilizing this principle makes it possible to design small, low power, two op-amp instrumentation amplifiers that can reject line noise and its harmonics, tasks that previously required three op-amp architectures or hundreds of megahertz bandwidth.

3. 发明申请

US20090196310A1 DEVICE AND METHOD FOR IMPROVED SETTLING TIME IN MULTIPLEXED INPUT SYSTEMS 有权
标题翻译：用于改进多输入系统中的设定时间的装置和方法
公开(公告)号：US20090196310A1
公开(公告)日：2009-08-06
申请号：US12359653
申请日：2009-01-26
申请人： Viola Schaffer , Heinz-Juergen Metzger , Michael V. Ivanov
发明人： Viola Schaffer , Heinz-Juergen Metzger , Michael V. Ivanov
IPC分类号： H04J3/00
CPC分类号： H03F3/68 , H03F1/52 , H03F3/45475 , H03F2200/165 , H03F2200/261 , H03F2200/441 , H03F2203/45138
摘要： An acquisition device and corresponding method for operating the acquisition system are provided. Generally, during operation a plurality of input signals are filtered and multiplexed. The multiplexed input signals are then applied to an amplifier stage; however, when a clamping condition for the amplifier stage occurs, a buffer is switched into a signal path between a multiplexer and an amplifier stage so as to generally reduce the current draw on the input filters.
摘要翻译：提供了一种用于操作采集系统的采集装置和相应方法。通常，在操作期间，对多个输入信号进行滤波和多路复用。然后将复用的输入信号施加到放大器级; 然而，当发生用于放大器级的钳位条件时，缓冲器被切换到多路复用器和放大器级之间的信号路径，以便通常减少输入滤波器上的电流消耗。

4. 发明申请

US20090184762A1 OPTIMIZED RESISTOR NETWORK FOR PROGRAMMABLE TRANSCONDUCTANCE STAGE 有权
标题翻译：用于可编程交叉级的优化电阻网络
公开(公告)号：US20090184762A1
公开(公告)日：2009-07-23
申请号：US12338571
申请日：2008-12-18
申请人： Viola Schaffer
发明人： Viola Schaffer
IPC分类号： H03F1/36
CPC分类号： H03G1/0088
摘要： A voltage-to-current converter is provided. The voltage-to-current converter comprises an amplifier, a resistor network, an R-2R network, and switches. The amplifier has a first input node (which is an input signal), a second input node, and an output node. The resistor network is coupled to the output node of the amplifier, includes a plurality of resistors coupled in series with on another, and includes a plurality of first tap nodes. The R-2R network is coupled to the resistor network and includes a plurality of second tap nodes. Additionally, at least one switch is coupled between the second input node of the amplifier and each first tap node, and at least one switch is coupled between the second input node of the amplifier and each of the second tap nodes.
摘要翻译：提供一个电压 - 电流转换器。电压 - 电流转换器包括放大器，电阻网络，R-2R网络和开关。放大器具有第一输入节点（其是输入信号），第二输入节点和输出节点。电阻器网络耦合到放大器的输出节点，包括与另一个串联耦合的多个电阻器，并且包括多个第一抽头节点。 R-2R网络耦合到电阻网络并且包括多个第二抽头节点。另外，至少一个开关耦合在放大器的第二输入节点和每个第一抽头节点之间，并且至少一个开关耦合在放大器的第二输入节点和每个第二抽头节点之间。

5. 发明授权

US07425848B2 Integrated driver circuit structure 有权
标题翻译：集成驱动电路结构
公开(公告)号：US07425848B2
公开(公告)日：2008-09-16
申请号：US11383413
申请日：2006-05-15
申请人： Viola Schaffer , Rodney T. Burt , Jürgen Metzger
发明人： Viola Schaffer , Rodney T. Burt , Jürgen Metzger
IPC分类号： H03B1/00
CPC分类号： H03K19/017581
摘要： An integrated circuit driver structure, comprising an amplifier, a current mirror block and an external current set resistor, is provided that is digitally configurable to operate in a current output mode or in a voltage output mode with its output level controlled by an external voltage. The current mirror block comprises multiple current sources, all having the same gate bias supplied by the output of amplifier. At any time, at least one current source is connected to supply the reference current to resistor, while all other current sources are connected to mirror the reference current to the load current output towards the load. A current gain ratio is based on the number of current sources connected to supply resistor and the number connected to mirror the reference current.
摘要翻译：提供了一种集成电路驱动器结构，其包括放大器，电流镜块和外部电流设置电阻器，其可数字配置以在电流输出模式或电压输出模式下工作，其输出电平由外部电压控制。电流镜块包括多个电流源，全部具有由放大器的输出提供的相同的栅极偏置。在任何时候，连接至少一个电流源以将参考电流提供给电阻器，而所有其他电流源连接到反向负载电流输出的参考电流。电流增益比基于连接到电源电阻的电流源的数量和连接到镜像参考电流的数量。

6. 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。

7. 发明申请

US20060255787A1 VOLTAGE CONTROLLED CURRENT SOURCE DEVICE 有权
标题翻译：电压控制电流源装置
公开(公告)号：US20060255787A1
公开(公告)日：2006-11-16
申请号：US11383320
申请日：2006-05-15
申请人： Viola Schaffer , Rodney Burt , Jurgen Metzger
发明人： Viola Schaffer , Rodney Burt , Jurgen Metzger
IPC分类号： G05F3/16
CPC分类号： G05F3/262
摘要： An integrated voltage controlled current source device is provided, that extends the high accuracy, low drift output current over a large current range, and provides more headroom and better power efficiency than the standard shunt resistor and INA (instrumentation amplifier) current source arrangement. The device has a control voltage input, a load current output and a current set terminal for a connection of a current set resistor. It contains a selected leg biasing set voltage, corresponding to a control voltage applied to the control voltage input of a regulating driver amplifier providing a regulated voltage to be applied across the current set resistor, thereby causing a reference current to flow through the current set resistor and selected leg(s) of a current mirror. Furthermore, the device contains a dynamically matched current mirror that mirrors the reference current to the load output current. The algorithm for selecting the current mirror legs may be a pseudo-random or a defined pattern.
摘要翻译：提供集成的电压控制电流源装置，其在大电流范围内延伸高精度，低漂移输出电流，并且比标准分流电阻器和INA（仪表放大器）电流源装置提供更大的净空和更好的功率效率。该器件具有控制电压输入，负载电流输出和用于连接电流设定电阻的电流设置端子。它包含一个选定的支路偏置设定电压，对应于施加到调节驱动放大器的控制电压输入端的控制电压，该调节驱动放大器提供施加在电流设定电阻器两端的调节电压，从而使参考电流流过电流设定电阻器和当前镜像的选定的腿。此外，该器件还包含一个动态匹配的电流镜，将电流反映到负载输出电流。用于选择当前镜腿的算法可以是伪随机的或定义的模式。

8. 发明申请

US20100019844A1 HIGH EFFICIENCY PRECISION AMPLIFIER 有权
标题翻译：高效率精密放大器
公开(公告)号：US20100019844A1
公开(公告)日：2010-01-28
申请号：US12491081
申请日：2009-06-24
申请人： Juergen Metzger , Mikhail V. Ivanov , Vadim V. Ivanov , Viola Schaffer
发明人： Juergen Metzger , Mikhail V. Ivanov , Vadim V. Ivanov , Viola Schaffer
IPC分类号： H03G3/20
CPC分类号： H03F3/217
摘要： A high efficiency precision amplifier which comprises a linear amplifier stage, a class D amplifier stage and a set of switches is provided. Both amplifier stages receive the same input signal. The load is driven by the output of the linear amplifier stage. The set of switches connect the output of the class D amplifier stage to either of the positive and negative supply terminals of the linear amplifier stage and the other of the positive and negative supply terminals of the linear amplifier stage to a negative or positive supply, depending on the polarity of the signal being amplified.
摘要翻译：提供了一种高效率精密放大器，其包括线性放大器级，D类放大器级和一组开关。两个放大器级都接收相同的输入信号。负载由线性放大器级的输出驱动。该组开关将D类放大器级的输出端与线性放大器级的正极和负极电源端子以及线性放大器级的正极和负极电源端子中的任一端连接到负电源或正电源，这取决于关于被放大信号的极性。

9. 发明申请

US20090278597A1 Slew rate and settling time improvement circuitry and method for 3-stage amplifier 有权
标题翻译： 3级放大器的转换速率和建立时间改善电路和方法
公开(公告)号：US20090278597A1
公开(公告)日：2009-11-12
申请号：US12151503
申请日：2008-05-07
申请人： Joy Y. Zhang , Viola Schaffer
发明人： Joy Y. Zhang , Viola Schaffer
IPC分类号： H03F1/02
CPC分类号： H03F3/005 , H03F3/387 , H03F3/45475 , H03F2200/261 , H03F2200/408 , H03F2203/45138 , H03F2203/45248 , H03F2203/45512 , H03H19/004
摘要： An operational amplifier (1B) amplifies an input signal (Vin) to produce an output signal (Vout), and includes a 3-stage amplifier (1C) including a first amplifier stage (2) receiving the input signal, a second amplifier stage (3) driven by the first amplifier stage (2), and a third amplifier stage (4) driven by the second amplifier stage to produce the output signal. A slew detection current (Idetect) is generated when the input signal (Vin) exceeds a certain magnitude, and is converted to a control signal (41) that operates a switch (MN0) to short-circuit output conductors of the first amplifier stage to prevent signal charge from building up on capacitances associated with the output of the first amplifier stage during slewing. The three stage amplifier can be a chopper-stabilized, notch-filtered amplifier.
摘要翻译：运算放大器（1B）放大输入信号（Vin）以产生输出信号（Vout），并且包括一个包括接收输入信号的第一放大器级（2）和第二放大级（3）的三级放大器（1C）由第一放大器级（2）驱动的第三放大级（4）和由第二放大级驱动的第三放大级（4）产生输出信号。当输入信号（Vin）超过一定量值时，产生转换检测电流（Idetect），并转换成操作开关（MN0）的控制信号（41），使第一放大级的输出导体短路到防止在回转期间与第一放大器级的输出相关联的电容上的信号电荷积聚。三级放大器可以是斩波稳定的陷波滤波放大器。

10. 发明授权

US07847637B2 High efficiency precision amplifier 有权
标题翻译：高效精密放大器
公开(公告)号：US07847637B2
公开(公告)日：2010-12-07
申请号：US12491081
申请日：2009-06-24
申请人： Juergen Metzger , Mikhail V. Ivanov , Vadim V. Ivanov , Viola Schaffer
发明人： Juergen Metzger , Mikhail V. Ivanov , Vadim V. Ivanov , Viola Schaffer
IPC分类号： H03F3/04
CPC分类号： H03F3/217
摘要： A high efficiency precision amplifier which comprises a linear amplifier stage, a class D amplifier stage and a set of switches is provided. Both amplifier stages receive the same input signal. The load is driven by the output of the linear amplifier stage. The set of switches connect the output of the class D amplifier stage to either of the positive and negative supply terminals of the linear amplifier stage and the other of the positive and negative supply terminals of the linear amplifier stage to a negative or positive supply, depending on the polarity of the signal being amplified.
摘要翻译：提供了一种高效率精密放大器，其包括线性放大器级，D类放大器级和一组开关。两个放大器级都接收相同的输入信号。负载由线性放大器级的输出驱动。该组开关将D类放大器级的输出端与线性放大器级的正极和负极电源端子以及线性放大器级的正极和负极电源端子中的任一端连接到负电源或正电源，这取决于关于被放大信号的极性。

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