公开(公告)号：US06535724B1

公开(公告)日：2003-03-18

申请号：US09619193

申请日：2000-07-19

申请人： Sergio Pernici ,  Germano Nicollini

发明人： Sergio Pernici ,  Germano Nicollini

IPC分类号： H04B110

CPC分类号： H03G3/348

摘要： A receiver portion of a telephone includes a differential amplifier stage with a single output, an electroacoustic transducer connected between the output, via a capacitor and ground and a unit for controlling switching on/off, connected to the differential stage for the activation or deactivation thereof. To prevent annoying noises in the transducer upon switching on and off, the differential stage includes an operational amplifier having a first capacitor and a second capacitor in series with the inverting and the non-inverting input terminals. A third capacitor is connected between the inverting input and the output of the operational amplifier. A fourth capacitor is connected between the non-inverting input and a first reference-voltage terminal. A first switching capacitor is alternatively connectable between a second and a third reference-voltage terminal, or between the first input and the output of the operational amplifier. A second switching capacitor is alternatively connectable between a fourth and a fifth reference-voltage terminal, or between the second input of the operational amplifier and the fifth reference-voltage terminal.

摘要翻译： 电话的接收机部分包括具有单个输出的差分放大器级，连接在输出之间的电声换能器，经由电容器和接地以及用于控制开关导通/断开的单元，连接到差动级以用于其激活或停用 。 为了防止在接通和断开时换能器中的烦扰，差动级包括运算放大器，其具有与反相和非反相输入端串联的第一电容器和第二电容器。 第三电容器连接在反相输入端和运算放大器的输出端之间。 第四电容器连接在非反相输入端和第一参考电压端子之间。 第一开关电容器可交替地连接在第二和第三参考电压端子之间，或在运算放大器的第一输入端和输出端之间。 第二开关电容器可交替地连接在第四和第五参考电压端子之间，或在运算放大器的第二输入端与第五参考电压端子之间。

公开(公告)号：US08035450B2

公开(公告)日：2011-10-11

申请号：US12630691

申请日：2009-12-03

申请人： Andrea Barbieri ,  Sergio Pernici ,  Germano Nicollini

发明人： Andrea Barbieri ,  Sergio Pernici ,  Germano Nicollini

IPC分类号： H03F1/14

CPC分类号： H03F1/083 ,  H03F3/45183 ,  H03F2203/45134 ,  H03F2203/45644

摘要： An operational amplifier having a first amplification stage with an input terminal to receive a signal to be amplified, and a first output terminal, and a second amplification stage having a first input terminal connected to the first output terminal, and an output terminal to provide the amplified signal. The first and second amplification stages define, between the input terminal and the output terminal, a signal transfer function having first and second poles. The amplifier further includes a decoupling stage having a further input terminal connected to the first stage input terminal, and a further output terminal connected to the second stage output terminal. The decoupling stage is so arranged as to introduce at least one zero in the operational amplifier transfer function.

摘要翻译： 一种具有第一放大级的运算放大器，具有用于接收要放大的信号的输入端，以及第一输出端，​​以及具有连接到第一输出端的第一输入端的第二放大级，以及输出端， 放大信号。 第一和第二放大级在输入端和输出端之间限定具有第一和第二极的信号传递函数。 放大器还包括一个去耦阶段，其具有连接到第一级输入端的另一输入端，以及连接到第二级输出端的另一输出端。 解耦级被布置成在运算放大器传递函数中引入至少一个零。

公开(公告)号：US06697612B2

公开(公告)日：2004-02-24

申请号：US09570877

申请日：2000-05-15

申请人： Germano Nicollini ,  Sergio Pernici

发明人： Germano Nicollini ,  Sergio Pernici

IPC分类号： H04B110

CPC分类号： H04M1/6016 ,  H03G3/348

摘要： A processing unit with balanced outputs transfers a received digital signal to an amplification unit with balanced inputs and outputs. A control unit enables or disables the processing and amplification units in response to a power up/power down signal. To prevent disturbances due to power up/power down transients from appearing in a speaker connected between the outputs of the amplification unit, switches are provided between the outputs of the processing unit and the inputs of the amplification unit. A delay circuit generates according to a predetermined timing program enabling/disabling control signals for the processing and amplification units, and generates control signals for the switches.

摘要翻译： 具有平衡输出的处理单元将接收到的数字信号传送到具有平衡输入和输出的放大单元。 控制单元响应于上电/掉电信号启用或禁用处理和放大单元。 为了防止由于在连接在放大单元的输出端之间的扬声器中出现上电/断电瞬变而引起的干扰，在处理单元的输出和放大单元的输入之间提供开关。 延迟电路根据预定的定时程序产生使能/禁止用于处理和放大单元的控制信号，并产生开关的控制信号。

公开(公告)号：US5352972A

公开(公告)日：1994-10-04

申请号：US861111

申请日：1992-03-31

申请人： Sergio Pernici ,  Germano Nicollini

发明人： Sergio Pernici ,  Germano Nicollini

IPC分类号： G05F3/30 ,  G11C27/02 ,  H03K5/08 ,  H03M1/34 ,  G05F3/16

CPC分类号： G11C27/026

摘要： A sampled band-gap voltage reference circuit which has quicker regeneration of the voltage reference signal after degeneration of the voltage reference signal due to additional loading. The voltage reference circuit prevents interference from the circuit source inputs to the operational amplifier by selective switching. The selective switching of the circuit allows the operational amplifier to regenerate the output voltage up to ten times quicker than prior art devices of the same size.

摘要翻译： 采样的带隙电压参考电路，由于额外的负载，在电压参考信号退化后具有更快的再生电压参考信号。 电压参考电路通过选择性开关来防止来自运算放大器的电路源输入的干扰。 电路的选择性切换允许运算放大器比现有技术相同尺寸的器件更快地再生输出电压的十倍。

公开(公告)号：US4883993A

公开(公告)日：1989-11-28

申请号：US279036

申请日：1988-12-02

申请人： Pierangelo Confalonieri ,  Sergio Pernici ,  Germano Nicollini

发明人： Pierangelo Confalonieri ,  Sergio Pernici ,  Germano Nicollini

IPC分类号： H03K5/1252

CPC分类号： H03K5/1252

摘要： The antibounce circuit comprises:(a) a first flip-flop constituted by a first and a second NAND gate (10, 12) having their respective outputs connected to one of the inputs of the other gate, the free input of the first gate being the input for said digital signal;(b) a second flip-flop constituted by a third and fourth NAND gate (14, 16) having their respective outputs connected to one of the inputs of the other gate, the free input of the third gate being connected to the output of the first gate;(c) a non-inverting delay circuit (20, 22, 24) connecting the output of the third gate to the free input of the second gate;(d) a first inverter connecting the output of the delay circuit to the free input of the fourth gate.

公开(公告)号：US5668494A

公开(公告)日：1997-09-16

申请号：US451030

申请日：1995-05-31

申请人： Germano Nicollini ,  Sergio Pernici

发明人： Germano Nicollini ,  Sergio Pernici

IPC分类号： H03F3/68 ,  H03F3/72 ,  H03K17/693 ,  H03F3/18

CPC分类号： H03F3/68 ,  H03F3/72 ,  Y10T307/461

摘要： An electronic driver circuit for low-impedance loads, being of a type which comprises an input terminal (IN) to which a voltage signal (Vin) is applied for alternate transfer to an output, and a plurality of output terminals (OUTi), each connected to a corresponding electric load (2), further comprises, between the input terminal and the output terminals, a single operational amplifier (3) having multiple output stages (7), one for each output terminal (OUTi). The operational amplifier (3) is of the single-ended or fully differential multistage type and allows each load to be driven alternately by activation of the corresponding output stage (7i).

摘要翻译： 一种用于低阻抗负载的电子驱动电路，它是一种类型，它包括一个输入端（IN），一个电压信号（Vin）被施加到输出的交替传输，以及多个输出端（OUTi） 连接到相应的电负载（2），在输入端和输出端之间还包括具有多个输出级（7）的单个运算放大器（3），每个输出端（OUTi）一个。 运算放大器（3）是单端或全差分多级型，通过激活相应的输出级（7i）可以交替地驱动每个负载。

公开(公告)号：US5212455A

公开(公告)日：1993-05-18

申请号：US811153

申请日：1991-12-19

申请人： Sergio Pernici ,  Germano Nicollini

发明人： Sergio Pernici ,  Germano Nicollini

IPC分类号： H03F1/08 ,  H03F3/30 ,  H03F3/45

CPC分类号： H03F3/3023 ,  H03F1/086 ,  H03F3/45192 ,  H03F3/45654 ,  H03F2203/45296 ,  H03F2203/45421 ,  H03F2203/45651 ,  H03F2203/45711 ,  H03F2203/45722

摘要： A power CMOS operational amplifier with a differential output, having an intrinsically stable current absorption under rest conditions, comprises two symmetric branches, each comprising a first folded cascode input inverting stage, a level shifting circuit, a second currant mirror type noninverting amplifying stage and a third output inverting stage, constituted by a complementary pair of transistors, connected in a common source configuration between the supply rails and driven by the output of the second noninverting stage and by the output of the level shifting circuit. Frequency compensation is accomplished by means of two capacitors connected between each of the two output terminals of the amplifier and the output of the first inverting stage and a node of the output branch of the noninverting current mirror stage. A single common mode feedback network stabilizes both symmetric branches of the amplifier.

公开(公告)号：US4829266A

公开(公告)日：1989-05-09

申请号：US206016

申请日：1988-06-10

申请人： Sergio Pernici ,  Germano Nicollini ,  Daniel Senderowicz

发明人： Sergio Pernici ,  Germano Nicollini ,  Daniel Senderowicz

IPC分类号： H03F3/345 ,  H03F1/08 ,  H03F3/30 ,  H03F3/34 ,  H03F3/347 ,  H03F3/45

CPC分类号： H03F1/083 ,  H03F3/3001

摘要： A CMOS power operational amplifier with large output voltage swing and high noise rejection is obtained by coupling a folded cascode type differential input stage and an output stage comprising an intermediate signal shifting amplifier and two common source output stages. Constant current generators inject into the drain of grounded gate MOS transistors pairs of said folded cascode type stage and of said intermediate signal shifting amplifier, respectively, a current which is pulled out of the source of the same grounded gate transistors by other constant current generators for increasing the effective transconductance of said grounded gate transistors pairs.

公开(公告)号：US20100141343A1

公开(公告)日：2010-06-10

申请号：US12630691

申请日：2009-12-03

申请人： Andrea Barbieri ,  Sergio Pernici ,  Germano Nicollini

发明人： Andrea Barbieri ,  Sergio Pernici ,  Germano Nicollini

IPC分类号： H03F3/16

CPC分类号： H03F1/083 ,  H03F3/45183 ,  H03F2203/45134 ,  H03F2203/45644

摘要： An operational amplifier having a first amplification stage with an input terminal to receive a signal to be amplified, and a first output terminal, and a second amplification stage having a first input terminal connected to the first output terminal, and an output terminal to provide the amplified signal. The first and second amplification stages define, between the input terminal and the output terminal, a signal transfer function having first and second poles. The amplifier further includes a decoupling stage having a further input terminal connected to the first stage input terminal, and a further output terminal connected to the second stage output terminal. The decoupling stage is so arranged as to introduce at least one zero in the operational amplifier transfer function.

摘要翻译： 一种具有第一放大级的运算放大器，具有用于接收要放大的信号的输入端，以及第一输出端，​​以及具有连接到第一输出端的第一输入端的第二放大级，以及输出端， 放大信号。 第一和第二放大级在输入端和输出端之间限定具有第一和第二极的信号传递函数。 放大器还包括一个去耦阶段，其具有连接到第一级输入端的另一输入端，以及连接到第二级输出端的另一输出端。 解耦级被布置成在运算放大器传递函数中引入至少一个零。

公开(公告)号：US06690790B1

公开(公告)日：2004-02-10

申请号：US09569113

申请日：2000-05-10

申请人： Germano Nicollini ,  Sergio Pernici

发明人： Germano Nicollini ,  Sergio Pernici

IPC分类号： H04M100

CPC分类号： H03F1/305 ,  H03G3/348 ,  H04M1/6016

摘要： A telephone receiving section having a final stage, an electroacoustic transducer having a first terminal connected to the ground of the circuit, a unit for controlling switching on/off, a source of a reference voltage, a switch that can adopt a first position or a second position in order to connect the second terminal of the transducer selectively, via a capacitor, to a reference-voltage terminal of the reference voltage source or to an output terminal of the final stage, respectively, and control means that respond to signals of the unit for controlling switching on/off in order to activate or to deactivate the final stage and the reference-voltage source and to operate the switch in accordance with a predetermined time program. The receiving section operates with the same immunity to disturbances as a fully balanced structure, even though the transducer is not connected between two balanced outputs.

摘要翻译： 具有最后级的电话接收部分，具有连接到电路接地的第一端子的电声换能器，用于控制开/关的开关单元，参考电压源，可采用第一位置或 第二位置，以便分别通过电容器选择性地将传感器的第二端子连接到参考电压源的参考电压端子或者连接到最终级的输出端子;以及控制装置， 用于控制开关的开/关的单元，以便激活或停用最终级和参考电压源，并根据预定的时间程序来操作开关。 即使传感器没有连接在两个平衡输出之间，接收部分也具有与完全平衡的结构相同的扰动抗扰度。