公开(公告)号：US20020167356A1

公开(公告)日：2002-11-14

申请号：US10144623

申请日：2002-05-13

Applicant: STMicroelectronics S.A.

Inventor： Claude Renous ,  Francois Van-Zanten

IPC: H03F003/45

CPC classification number: H03F3/3023 ,  H03F3/45188 ,  H03F3/45659 ,  H03F2203/45711

Abstract: A wideband differential amplifier includes a first differential stage connected to a Miller stage allowing an open-loop gain increase. The Miller stage includes a current source and a resistive-capacitive network causing a feedback into the current source. The feedback includes a portion of a Miller stage output signal having a high frequency range to move a bias point of the current source within the high frequency range. Thus, a gain of the Miller stage significantly increases towards the bias point.

Abstract translation: 宽带差分放大器包括连接到Miller级的第一差分级，允许开环增益增加。 米勒级包括电流源和电阻电容网络，导致反馈到电流源。 反馈包括具有高频范围的米勒级输出信号的一部分，以将电流源的偏置点移动到高频范围内。 因此，米勒阶段的增益显着地朝向偏向点增加。

公开(公告)号：US20010005129A1

公开(公告)日：2001-06-28

申请号：US09735392

申请日：2000-12-11

Applicant: STMicroelectronics S.A.

Inventor： Claude Renous

IPC: G05F001/40

CPC classification number: G05F1/565 ,  G05F1/5735 ,  Y10S323/908

Abstract: A voltage regulator with a current limiter includes a voltage regulating circuit including an amplifier circuit and a feedback circuit. The amplifier circuit includes a ballast or pass resistor and the feedback circuit supplies a first feedback voltage to the amplifier circuit, which is compared to a reference voltage. The voltage regulator further includes a current limiter circuit including a current limiter transistor in series with the ballast transistor and an output of the voltage regulator and a feedback circuit supplying a second feedback voltage to a controller for controlling the current limiter transistor. The controller causes the current limiter transistor to operate between saturation and blocking conditions depending on whether the second feedback voltage, which is representative of the output of the voltage regulator, is above or below a predetermined threshold voltage.

Abstract translation: 具有限流器的电压调节器包括具有放大器电路和反馈电路的电压调节电路。 放大器电路包括镇流器或通过电阻器，并且反馈电路向放大器电路提供第一反馈电压，其与参考电压进行比较。 电压调节器还包括电流限制器电路，该限流器电路包括与镇流器晶体管串联的限流晶体管和电压调节器的输出端以及向控制器提供第二反馈电压的反馈电路，用于控制限流晶体管。 控制器根据表示电压调节器的输出的第二反馈电压是否高于或低于预定阈值电压，使得限流晶体管在饱和和阻塞条件之间工作。

公开(公告)号：US20030137351A1

公开(公告)日：2003-07-24

申请号：US10319425

申请日：2002-12-12

Applicant: STMicroelectronics S.A.

Inventor： Claude Renous ,  Kuno Lenz

IPC: H03F003/45

CPC classification number: H03F3/45475 ,  H03F1/086 ,  H03F2200/372 ,  H03F2203/45008 ,  H03F2203/45082

Abstract: A low noise differential amplifier structure comprising a first amplifier provided with an output stage with a Miller capacitor having a first electrode and a second electrode connected to the input and the output of the output stage, respectively. A second amplifier is provided with an output stage with a Miller capacitor having a first electrode and a second electrode connected to the input and the output of the output stage, respectively. The structure is characterized in that it comprises: at least a first trimming capacitor having a first electrode connected to the first electrode of the first Miller capacitor; at least a second trimming capacitor having a first electrode connected to the first electrode of the second Miller capacitor; and a cascode stage having an input receiving the output common mode voltage and an output connected to the second electrode of the first and second trimming capacitors.

Abstract translation: 一种低噪声差分放大器结构，包括具有输出级的第一放大器，分别具有与输出级的输入端和输出端连接的第一电极和第二电极的米勒电容器。 第二放大器设置有输出级，其具有分别连接到输出级的输入端和输出端的第一电极和第二电极的米勒电容器。 该结构的特征在于它包括：至少第一微调电容器，其具有连接到第一米勒电容器的第一电极的第一电极; 至少第二微调电容器，其具有连接到第二米勒电容器的第一电极的第一电极; 以及级联级，其具有接收输出共模电压的输入端和连接到第一和第二微调电容器的第二电极的输出端。

公开(公告)号：US20020167357A1

公开(公告)日：2002-11-14

申请号：US10144636

申请日：2002-05-13

Applicant: STMicroelectronics S.A.

Inventor： Claude Renous

IPC: H03F003/45

CPC classification number: H03F3/3023 ,  H03F1/086 ,  H03F3/3062 ,  H03F3/45659

Abstract: A differential amplifier may include a first stage including a first transistor and a second transistor having the same polarity and assembled to constitute a differential amplifier. The first stage may be supplied by first and second mirror current sources. The differential amplifier may further include a common mode control circuit, which may include two inputs receiving a reference voltage VCM and a common mode voltage controlling the first and second mirror current sources, respectively. The differential amplifier may further include a Miller gain stage having inputs and for a setting gain-band product. The differential amplifier may further include an unlocking circuit, inserted between the common mode voltage and the Miller gain stage inputs, to cause the Miller gain stage to conduct on circuit start-up.

Abstract translation: 差分放大器可以包括第一级，其包括具有相同极性的第一晶体管和第二晶体管，并组装以构成差分放大器。 第一级可以由第一和第二反射镜电流源提供。 差分放大器还可以包括共模控制电路，其可以包括接收参考电压VCM的两个输入端和分别控制第一和第二反射镜电流源的共模电压。 差分放大器还可以包括具有输入和设置增益带积的米勒增益级。 差分放大器还可以包括插入在共模电压和米勒增益级输入之间的解锁电路，以使得米勒增益级在电路启动时进行。