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1. 发明申请

US20100060359A1 Low Headroom X-Bridge Transconductor 有权
标题翻译：低余量X桥电桥
公开(公告)号：US20100060359A1
公开(公告)日：2010-03-11
申请号：US12207082
申请日：2008-09-09
申请人： Sandro Herrera , Stefano D'Aquino
发明人： Sandro Herrera , Stefano D'Aquino
IPC分类号： H03F3/45
CPC分类号： H03F3/4508 , H03F3/45094
摘要： A transconductance cell includes a positive rail for providing a positive power supply voltage and a negative rail for providing a negative power supply voltage. A pair of voltage inputs, one inverting and one non-inverting, develop a differential voltage input signal having a common mode voltage range from one of the rail voltages to within a volt or less of the other rail voltage. And a pair of cross-coupled transconductor circuits each have: (i.) a source voltage follower responsive to one of the voltage inputs for sourcing relatively unbounded output current at unity voltage gain, (ii.) a sink voltage follower responsive to the other voltage input for sinking unbounded output current to a current output terminal, and (iii) a transconductance resistor connected between the source voltage follower and the sink voltage follower for developing a differential output current proportional to the differential voltage input signal. Transconductance of the cell is substantially constant over the range of the differential voltage input signal without limiting the differential output current.
摘要翻译：跨导单元包括用于提供正电源电压的正轨和用于提供负电源电压的负轨。一对电压输入，一个反相和一个同相，形成一个差分电压输入信号，该差分电压输入信号具有从一个轨道电压到另一个轨道电压的伏特或更小的共模电压范围。并且一对交叉耦合的跨导体电路各自具有：（i。）响应于电压输入之一的源极电压跟随器，用于以单位电压增益提供相对无限制的输出电流，（ii。）响应于另一个的吸收电压跟随器用于将无界输出电流吸收到电流输出端子的电压输入，以及（iii）连接在源极电压跟随器和吸收电压跟随器之间的跨导电阻器，用于形成与差分电压输入信号成比例的差分输出电流。电池的跨导在差分电压输入信号的范围内基本上是恒定的，而不限制差分输出电流。

2. 发明授权

US07800445B2 Low headroom X-bridge transconductor 有权
标题翻译：低净空X桥跨导体
公开(公告)号：US07800445B2
公开(公告)日：2010-09-21
申请号：US12207082
申请日：2008-09-09
申请人： Sandro Herrera , Stefano D'Aquino
发明人： Sandro Herrera , Stefano D'Aquino
IPC分类号： H03F3/45
CPC分类号： H03F3/4508 , H03F3/45094
摘要： A transconductance cell includes a positive rail for providing a positive power supply voltage and a negative rail for providing a negative power supply voltage. A pair of voltage inputs, one inverting and one non-inverting, develop a differential voltage input signal having a common mode voltage range from one of the rail voltages to within a volt or less of the other rail voltage. And a pair of cross-coupled transconductor circuits each have: (i.) a source voltage follower responsive to one of the voltage inputs for sourcing relatively unbounded output current at unity voltage gain, (ii.) a sink voltage follower responsive to the other voltage input for sinking unbounded output current to a current output terminal, and (iii) a transconductance resistor connected between the source voltage follower and the sink voltage follower for developing a differential output current proportional to the differential voltage input signal. Transconductance of the cell is substantially constant over the range of the differential voltage input signal without limiting the differential output current.
摘要翻译：跨导单元包括用于提供正电源电压的正轨和用于提供负电源电压的负轨。一对电压输入，一个反相和一个同相，形成一个差分电压输入信号，该差分电压输入信号具有从一个轨道电压到另一个轨道电压的伏特或更小的共模电压范围。并且一对交叉耦合的跨导体电路各自具有：（i。）响应于电压输入之一的源极电压跟随器，用于以单位电压增益提供相对无限制的输出电流，（ii。）响应于另一个的吸收电压跟随器用于将无界输出电流吸收到电流输出端子的电压输入，以及（iii）连接在源极电压跟随器和吸收电压跟随器之间的跨导电阻器，用于形成与差分电压输入信号成比例的差分输出电流。电池的跨导在差分电压输入信号的范围内基本上是恒定的，而不限制差分输出电流。

3. 发明申请

US20080068075A1 Trifferential amplifier and trifferential amplifier system 有权
标题翻译：三相放大器和三相放大器系统
公开(公告)号：US20080068075A1
公开(公告)日：2008-03-20
申请号：US11524016
申请日：2006-09-20
申请人： Stefano D'Aquino
发明人： Stefano D'Aquino
IPC分类号： H03F3/45
CPC分类号： H03F3/45475 , H03F3/211 , H03F3/45085 , H03F3/45973 , H03F2203/21106 , H03F2203/21142 , H03F2203/45032 , H03F2203/45082 , H03F2203/45318 , H03F2203/45418 , H03F2203/45528 , H03F2203/45588 , H03F2203/45594
摘要： A multi-fferential amplifier system includes an amplifier having a plurality of amplifier inputs and a plurality of amplifier outputs; a plurality of input terminals for receiving a plurality of inputs and being interconnected with the amplifier inputs through a plurality of input impedances, respectively, and a feedback network including a plurality of summing circuits for combining the plurality of amplifier outputs in a plurality of different sets of groups each group numbering one fewer than the plurality, respectively, and feeding back the sum of each group of amplifier outputs to the remaining amplifier input for maintaining the difference between any group of amplifier outputs proportional to the difference of a corresponding group of inputs at the terminals and maintaining the average value of the amplifier outputs constant and unrelated to the inputs at the terminal. Also disclosed is a multi-fferential amplifier including a plurality of differential input/output circuits responsive to a plurality of input signals and providing a plurality of output signals; each input signal is shared between a different set of differential input/output circuits in a plurality of different sets of groups, each group numbering one fewer than the plurality; each differential input/output circuit receives one input signal at its positive input and the other input signal at its negative input.
摘要翻译：多重放大器系统包括：具有多个放大器输入和多个放大器输出的放大器; 多个输入端子，分别用于接收多个输入并且通过多个输入阻抗与放大器输入互连;以及反馈网络，包括多个求和电路，用于组合多个不同集合中的多个放大器输出的组分别分别比多个编号少一个，并且将每组放大器输出的总和反馈到剩余的放大器输入，以保持与在相应组的输入成比例的任何组的放大器输出之间的差异终端并保持放大器的平均值输出恒定，与终端的输入无关。还公开了一种多功能放大器，包括响应于多个输入信号并提供多个输出信号的多个差分输入/输出电路; 每个输入信号在多个不同组的组中的不同组的差分输入/输出电路之间共享，每个组比多个编号少一个; 每个差分输入/输出电路在其正输入端接收一个输入信号，在其负输入端接收另一个输入信号。

4. 发明授权

US07403069B2 Trifferential amplifier and trifferential amplifier system 有权
公开(公告)号：US07403069B2
公开(公告)日：2008-07-22
申请号：US11524016
申请日：2006-09-20
申请人： Stefano D'Aquino
发明人： Stefano D'Aquino
IPC分类号： H03F3/00
CPC分类号： H03F3/45475 , H03F3/211 , H03F3/45085 , H03F3/45973 , H03F2203/21106 , H03F2203/21142 , H03F2203/45032 , H03F2203/45082 , H03F2203/45318 , H03F2203/45418 , H03F2203/45528 , H03F2203/45588 , H03F2203/45594
摘要： A multi-fferential amplifier system includes an amplifier having a plurality of amplifier inputs and a plurality of amplifier outputs; a plurality of input terminals for receiving a plurality of inputs and being interconnected with the amplifier inputs through a plurality of input impedances, respectively, and a feedback network including a plurality of summing circuits for combining the plurality of amplifier outputs in a plurality of different sets of groups each group numbering one fewer than the plurality, respectively, and feeding back the sum of each group of amplifier outputs to the remaining amplifier input for maintaining the difference between any group of amplifier outputs proportional to the difference of a corresponding group of inputs at the terminals and maintaining the average value of the amplifier outputs constant and unrelated to the inputs at the terminal. Also disclosed is a multi-fferential amplifier including a plurality of differential input/output circuits responsive to a plurality of input signals and providing a plurality of output signals; each input signal is shared between a different set of differential input/output circuits in a plurality of different sets of groups, each group numbering one fewer than the plurality; each differential input/output circuit receives one input signal at its positive input and the other input signal at its negative input.

5. 发明授权

US06734737B2 Output distortion correction amplifier system 有权
标题翻译：输出失真校正放大器系统
公开(公告)号：US06734737B2
公开(公告)日：2004-05-11
申请号：US10167887
申请日：2002-06-12
申请人： Kimo Y. F. Tam , Stefano D'Aquino
发明人： Kimo Y. F. Tam , Stefano D'Aquino
IPC分类号： H03F345
CPC分类号： H03F1/3217 , H03F3/3076 , H03F3/45094 , H03F2203/45674 , H03F2203/45696 , H03F2203/45712
摘要： An output distortion correction amplifier system includes an input stage; a current mirror connected to the input stage; an output stage having its input connected to the input stage and a current mirror and its output connected to the input stage; a compensation impedance connected to the input of the output stage; and a distortion correction circuit for directly sensing the distortion voltage across the output stage and providing to the current mirror a current representative of the distortion voltage for delivering to the compensation impedance a correction current to develop a correction voltage at the input of the output stage to nullify the effect of the distortion voltage.
摘要翻译：输出失真校正放大器系统包括输入级; 连接到输入级的电流镜; 其输入级连接到输入级的输出级和连接到输入级的电流镜及其输出; 连接到输出级的输入端的补偿阻抗; 以及用于直接感测输出级两端的失真电压的畸变校正电路，向电流镜提供代表失真电压的电流，以将补偿阻抗传递到校正电流，以在输出级的输入端产生校正电压，以消除失真电压的影响。

6. 发明授权

US07760017B2 Integrated circuit having on die structure providing capacitance in amplifier feedback path 有权
标题翻译：具有在放大器反馈路径中提供电容的管芯结构的集成电路
公开(公告)号：US07760017B2
公开(公告)日：2010-07-20
申请号：US12107372
申请日：2008-04-22
申请人： Kimo Y. F. Tam , Stefano D'Aquino
发明人： Kimo Y. F. Tam , Stefano D'Aquino
IPC分类号： H03F1/00
CPC分类号： H03F1/14 , H03F1/34 , H03F3/45475 , H03F2203/45082 , H03F2203/45418
摘要： An amplifier structure includes shield conductors that are provided spatially adjacent to elongated feedback signal lines that couple a feedback circuit to an amplifier input. The shield conductors are provided between the feedback signal lines and a ground plane, which interrupts a parasitic capacitance that otherwise would be established between the feedback signal line and ground. The shield conductors are electrically coupled to the amplifier's outputs which create a capacitance between the output terminal and the feedback signal line. In some embodiments, the capacitance generated between the output terminal and the feedback signal line can suffice as a capacitor in a feedback path of the amplifier and be contained in an integrated circuit die on which the amplifier is manufactured. Optionally, a structure may be provided that eliminates common mode signals on the feedback lines while simultaneously preserving the common mode signals on the amplifier output terminals. In this option, a second amplifier is provided that, in response to common mode variations at the output terminal, generates counterbalancing voltage variations on a second circuit that is coupled to the feedback lines at their source. The two variations cancel each other out at nodes from which the feedback lines originate, which substantially reduces feedback common mode variation even when there is common mode variation at the output terminals.
摘要翻译：放大器结构包括屏蔽导体，空间上邻近于将反馈电路耦合到放大器输入的细长反馈信号线。屏蔽导体设置在反馈信号线和接地平面之间，其中断了反馈信号线和地之间否则将建立的寄生电容。屏蔽导体电耦合到放大器的输出，在输出端和反馈信号线之间产生电容。在一些实施例中，在输出端和反馈信号线之间产生的电容可以作为放大器的反馈路径中的电容器，并且被包含在其上制造放大器的集成电路管芯中。可选地，可以提供消除反馈线上的共模信号同时保持放大器输出端上的共模信号的结构。在该选项中，提供第二放大器，其响应于输出端子处的共模变化，在耦合到源极处的反馈线的第二电路上产生平衡电压变化。这两个变化在反馈线所在的节点彼此抵消，即使在输出端子处存在共模变化时，这也大大降低了反馈共模变化。

7. 发明授权

US06586997B1 Input distortion correction current-feedback amplifier system 有权
标题翻译：输入失真校正电流反馈放大器系统
公开(公告)号：US06586997B1
公开(公告)日：2003-07-01
申请号：US10060829
申请日：2002-01-30
申请人： Stefano D'Aquino , Kimo Y. F. Tam
发明人： Stefano D'Aquino , Kimo Y. F. Tam
IPC分类号： H03F345
CPC分类号： H03F1/305 , H03F1/3217 , H03F3/45475
摘要： An input distortion correction current-feedback amplifier system includes a current mirror; an input stage connected to the input of the current mirror; an output stage connected to the output of the current mirror; a feedback circuit connected from the output stage to the input stage; a compensation impedance connected to the output of the current mirror; and a distortion correction circuit for sensing the distortion voltage across the input stage and providing to the current mirror a current representative of the distortion voltage for delivering to the compensation impedance a correction current to develop a correction voltage at the input of the output stage to nullify the effect of the distortion voltage.
摘要翻译：输入失真校正电流反馈放大器系统包括电流镜; 连接到电流镜的输入的输入级; 连接到电流镜的输出的输出级; 从输出级连接到输入级的反馈电路; 连接到电流镜的输出的补偿阻抗; 以及失真校正电路，用于感测输入级两端的失真电压，并向电流反射镜提供代表失真电压的电流，以将补偿阻抗传送到校正电流，以在输出级的输入端产生校正电压，使之无效失真电压的影响。

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