公开(公告)号：US5610564A

公开(公告)日：1997-03-11

申请号：US140233

申请日：1993-10-20

Applicant: Luciano Tomasini ,  Rinaldo Castello

Inventor： Luciano Tomasini ,  Rinaldo Castello

IPC: H03H7/06 ,  H03H7/00 ,  H03H11/34 ,  H03H11/36 ,  H04M1/60 ,  H04M1/76 ,  H03H11/04

CPC classification number: H03H7/004 ,  H04M1/6025

Abstract: A monolithically integrated AC coupling circuit is presented for DC uncoupling and AC coupling (typically in telephone applications) to an input signal. The AC coupler includes a high-pass filter having a first pole at a frequency well below a frequency of interest and a zero at zero frequency. The AC coupler also includes a pole/zero doublet between the frequency of the first pole and the frequency of interest. The frequency of the first pole for a specified error is increased by addition of the doublet. Because the frequency of the first pole is increased, the size of the required capacitors is decreased, enabling integration. An implementation of the circuit using switched capacitor techniques is described. An alternative circuit employing a unit gain interface is presented. The alternative circuit reduces the dynamic range and driving voltage requirements of its field-effect transistors.

Abstract translation: 提出了一种单片集成AC耦合电路，用于DC分离和AC耦合（通常在电话应用中）到输入信号。 AC耦合器包括高通滤波器，其具有在低于感兴趣频率的频率处的第一极点和零频率处的零点。 AC耦合器还包括在第一极的频率和感兴趣的频率之间的极点/零点。 通过添加双峰来增加指定误差的第一极的频率。 由于第一极的频率增加，所需电容的尺寸减小，从而实现集成。 描述使用开关电容器技术的电路的实现。 提出了采用单位增益接口的替代电路。 替代电路降低了其场效应晶体管的动态范围和驱动电压要求。

公开(公告)号：US5552747A

公开(公告)日：1996-09-03

申请号：US457759

申请日：1995-06-01

Applicant: Luciano Tomasini ,  Rinaldo Castello ,  Pierangelo Confalonieri

Inventor： Luciano Tomasini ,  Rinaldo Castello ,  Pierangelo Confalonieri

IPC: H03K17/06 ,  H03K17/687 ,  G05F1/10 ,  G05F3/02

CPC classification number: H03K17/063

Abstract: A driver circuit, for an electronic switch which is to be operated from a clock signal, comprises an inverter driven by the clock signal, and a voltage doubler which is connected to supply the inverter and connected to be driven by the complementary clock signal.

Abstract translation: 用于从时钟信号操作的电子开关的驱动电路包括由时钟信号驱动的反相器，以及连接以提供反相器并连接以由互补时钟信号驱动的倍压器。

公开(公告)号：US5509069A

公开(公告)日：1996-04-16

申请号：US121294

申请日：1993-09-14

Applicant: Luciano Tomasini ,  Rinaldo Castello

Inventor： Luciano Tomasini ,  Rinaldo Castello

IPC: H04M19/08 ,  H04M19/00

CPC classification number: H04M19/08

Abstract: A circuit is provided in telecommunication terminal equipment for splitting a limited supply of current received from a subscriber's line current among a plurality of functional circuits according to their priority rank. The circuit uses a differential pair of current delivering transistors and a special circuit to monitor the actual current of absorption of at least the functional circuit of highest rank to produce a control signal that is used for modifying the drive conditions of the current delivering transistors. All current exceeding the actual absorption needs of the highest rank functional circuit is distributed to the other functional circuits and the prior art practice of sinking unneeded current through a dissipative shunt voltage regulator associated with each functional circuit is avoided. This same principle may be advantageously applied also to functional circuits of progressively lesser rank of priority.

Abstract translation: 在电信终端设备中提供电路，用于根据用户的线路电流根据其优先级排列从用户线路电流接收的有限供电电流。 该电路使用差分对的电流输送晶体管和专用电路来监视至少最高等级的功能电路的吸收的实际电流，以产生用于修改电流输送晶体管的驱动条件的控制信号。 超过最高等级功能电路的实际吸收需求的全部电流被分配到其他功能电路，并且避免了通过与每个功能电路相关联的耗散分流稳压器吸收不需要的电流的现有技术的实践。 该相同的原理也可以有利地应用于逐渐降低等级优先级的功能电路。

公开(公告)号：US5434535A

公开(公告)日：1995-07-18

申请号：US97067

申请日：1993-07-23

Applicant: Luciano Tomasini ,  Rinaldo Castello

Inventor： Luciano Tomasini ,  Rinaldo Castello

IPC: H03F1/34 ,  H03H7/06 ,  H03H11/04 ,  H03H11/12 ,  H04M1/00 ,  H03H11/46

CPC classification number: H03H11/12

Abstract: An RC filter for low or very low frequency applications, comprising a resistor between the filter input and output, and an amplifier connected after the resistor and having an output fed back to the amplifier input through a capacitor. This simple design allows the known Miller Effect to be utilized to produce a filter having a high time constant while employing small-size components which occupy little space in integrated circuits.

Abstract translation: 用于低频或非常低频应用的RC滤波器，包括滤波器输入和输出之间的电阻器，以及连接在电阻器之后的放大器，并且具有通过电容器反馈到放大器输入端的输出。 这种简单的设计允许使用已知的米勒效应来生产具有高时间常数的滤波器，同时采用在集成电路中占据很小空间的小尺寸部件。

公开(公告)号：US08380155B1

公开(公告)日：2013-02-19

申请号：US13434920

申请日：2012-03-30

Applicant: Fernando De Bernardinis ,  Rinaldo Castello

Inventor： Fernando De Bernardinis ,  Rinaldo Castello

IPC: H04B1/10

CPC classification number: H04B1/18 ,  H03F2200/91 ,  H03F2203/45026 ,  H03H11/1213 ,  H03H11/1291

Abstract: Aspects of the disclosure can provide a second order low pass filter. The second order low pass filter can work in current domain, and have high linearity for in-band signals and out-of-band signals. The second order low pass filter can include a MOS transistor having a gate terminal, a current input terminal and a current output terminal, a first capacitor coupled between the current input terminal and a ground connection and a second capacitor coupled between the gate terminal and the current input terminal.

Abstract translation: 本公开的方面可以提供二阶低通滤波器。 二阶低通滤波器可以在当前领域工作，并且对于带内信号和带外信号具有高线性度。 二阶低通滤波器可以包括具有栅极端子，电流输入端子和电流输出端子的MOS晶体管，耦合在电流输入端子和接地连接器之间的第一电容器和耦合在栅极端子和电流输出端子之间的第二电容器 电流输入端子。

公开(公告)号：US08164383B1

公开(公告)日：2012-04-24

申请号：US12896586

申请日：2010-10-01

Applicant: Alex Lollio ,  Giacomino Bollati ,  Rinaldo Castello

Inventor： Alex Lollio ,  Giacomino Bollati ,  Rinaldo Castello

IPC: H03F1/14

CPC classification number: H03F3/2173 ,  H03F1/303 ,  H03F1/3205 ,  H03F2200/78 ,  H03K17/166

Abstract: In one embodiment, the present disclosure includes an amplifier comprising first and second output stages. The first output stage receives first power supply voltages and the second output stage receives second power supply voltages greater than the first power supply voltages. A switching stage configures the output stages to provide a first current to an amplifier output node from the first output stage when a magnitude of a voltage on the output node is below a first value, provide a second current to the output node from the second output stage when the magnitude of the voltage on the output node is above a second value greater than the first value, and provide a third current to the output node from both the first output stage and the second output stage when the magnitude of the voltage on the output node is between the first value and the second value.

Abstract translation: 在一个实施例中，本发明包括一个包括第一和第二输出级的放大器。 第一输出级接收第一电源电压，第二输出级接收大于第一电源电压的第二电源电压。 当输出节点上的电压的大小低于第一值时，开关级配置输出级以从第一输出级向放大器输出节点提供第一电流，从第二输出向输出节点提供第二电流 当输出节点上的电压的大小高于大于第一值的第二值，并且当第一输出节点上的电压的大小在第一输出级和第二输出级的电压的大小时，将第三电流提供给输出节点 输出节点在第一个值和第二个值之间。

公开(公告)号：US06392471B1

公开(公告)日：2002-05-21

申请号：US09766890

申请日：2001-01-19

Applicant: Luciano Tomasini ,  Jesus Guinea ,  Rinaldo Castello

Inventor： Luciano Tomasini ,  Jesus Guinea ,  Rinaldo Castello

IPC: G05F110

CPC classification number: G05F3/242 ,  G05F3/262

Abstract: The generator includes complementary MOS transistors interconnected in four circuit branches one of which contains a constant-current generator. Voltages picked up at various nodes of the circuit can be used as reference and/or biasing voltages of the integrated circuit, which account for the variability of the manufacturing parameters.

Abstract translation: 发生器包括在四个电路分支中互连的互补MOS晶体管，其中一个包含恒流发生器。 在电路的各个节点处拾取的电压可以用作集成电路的参考和/或偏置电压，其考虑了制造参数的变化。

公开(公告)号：US06380789B1

公开(公告)日：2002-04-30

申请号：US09060617

申请日：1998-04-15

Applicant: Andrea Baschirotto ,  Guido Brasca ,  Rinaldo Castello ,  Giampiero Montagna

Inventor： Andrea Baschirotto ,  Guido Brasca ,  Rinaldo Castello ,  Giampiero Montagna

IPC: G06G718

CPC classification number: G06G7/12 ,  H03F3/72 ,  H03F2203/7215

Abstract: A switched input circuit structure of the type which includes an input terminal receiving an input voltage and an output terminal connected to an input capacitor. An operational amplifier is included having a non-inverting terminal connected to a ground reference terminal, an inverting input terminal, and an output terminal feedback connected to the inverting input terminal and held in a virtual ground condition by a parallel of first and second charge paths which are connected between the input terminal of the switched input circuit structure and the inverting input terminal of the operational amplifier and connected to the supply voltage reference and the ground reference, respectively.

Abstract translation: 一种切换输入电路结构，其类型包括接收输入电压的输入端和连接到输入电容的输出端。 包括运算放大器，其具有连接到接地参考端子的非反相端子，反相输入端子和连接到反相输入端子的输出端子反馈，并且通过第一和第二充电路径的并联保持在虚拟接地状态 它们连接在开关输入电路结构的输入端和运算放大器的反相输入端之间，分别连接到电源电压基准和接地基准。

公开(公告)号：US5745002A

公开(公告)日：1998-04-28

申请号：US326107

申请日：1994-10-19

Applicant: Andrea Baschirotto ,  Rinaldo Castello ,  Federico Montecchi ,  Angelo Nagari

Inventor： Andrea Baschirotto ,  Rinaldo Castello ,  Federico Montecchi ,  Angelo Nagari

IPC: H03F3/45 ,  H03H19/00 ,  H03K11/00 ,  H03K5/00

CPC classification number: H03H19/00

Abstract: A switched capacitance circuit, using a switched operational amplifier structure as an input switch of the switched capacitance, is provided with a new biasing circuit. An additional switched capacitor, switched alternately to power supply and to ground, is connected to the output side of the primary switched capacitor. Precision is retained while ensuring a rail-to-rail dynamic range, without requiring boosted control phases. Special arrangements may be implemented for controlling the amplitude of switching spikes when so required. A fully differential embodiment is also feasible with additional advantages.

Abstract translation: 使用开关运算放大器结构作为开关电容的输入开关的开关电容电路设置有新的偏置电路。 另一个开关电容器交替地切换到电源和地，连接到初级开关电容器的输出侧。 在保证轨到轨动态范围的同时保持精度，而无需增强控制阶段。 当需要时，可以实施用于控制开关尖峰的幅度的特殊布置。 完全差异化的实施例也是可行的，具有额外的优点。

公开(公告)号：US5710811A

公开(公告)日：1998-01-20

申请号：US633843

申请日：1996-04-10

Applicant: Luciano Tomasini ,  Rinaldo Castello ,  Ivan Bietti ,  Giancarlo Clerici

Inventor： Luciano Tomasini ,  Rinaldo Castello ,  Ivan Bietti ,  Giancarlo Clerici

IPC: H04B1/58 ,  H04M1/58 ,  H04M1/76 ,  H04M1/00

CPC classification number: H04M1/585 ,  H04B1/586 ,  H04M1/76

Abstract: The speech circuit matches the impedance of the telephone line by synthesizing a complex impedance using a positive feedback loop which has a single resistor (11), and cancels out the side tone using a subtractor (20') which extracts from the signal (Va) coming from the line a signal (Vb) correlated to the signal to be transmitted. In order to achieve cancellation of the side tone unaffected by the noise produced in the impedance synthesizing circuits, the signal (Vb) is derived by processing the signal present in the resistor (11) at the output of the feedback loop.

Abstract translation: 语音电路通过使用具有单个电阻器（11）的正反馈回路合成复阻抗来匹配电话线路的阻抗，并且使用从信号（Va）提取的减法器（20'）来消除侧音， 来自线路与要发送的信号相关的信号（Vb）。 为了实现不受阻抗合成电路中产生的噪声影响的侧音的消除，通过在反馈环路的输出端处理存在于电阻器（11）中的信号来导出信号（Vb）。