公开(公告)号：EP2498052B1

公开(公告)日：2018-06-13

申请号：EP12157997.3

申请日：2012-03-02

申请人： Honeywell International Inc.

发明人： Bingel, Thomas J. ,  Smith, Douglas E. ,  Sanders, Steven J. ,  Tran Vo, Deanne ,  Ross, Craig G. ,  Mead, Derek

IPC分类号： G01C19/72 ,  G01J1/46 ,  H03F3/08 ,  H03G11/02

CPC分类号： G01C19/721 ,  G01J1/46 ,  H03F1/3211 ,  H03F3/087 ,  H03F3/45475 ,  H03F2200/261 ,  H03F2203/45512 ,  H03F2203/45518 ,  H03F2203/45528 ,  H03F2203/45594 ,  H03F2203/45604 ,  H03G11/02

摘要： A clamp-point active circuit is provided. The clamp-point active circuit includes a rate amplifier configured to receive an output from a device transitioning between at least two levels. The clamp-point active circuit has at least one switching device configured to receive an output from the rate amplifier. The at least one switching device is in at least one respective feedback loop of the rate amplifier. A switching of the at least one switching device causes the rate amplifier to amplify with high linearity in a desired operating range and to clamp outputs received from the transitioning device that are outside the desired operating range to a fixed level.

公开(公告)号：EP3050211B1

公开(公告)日：2018-05-30

申请号：EP14781362.0

申请日：2014-09-19

申请人： Qualcomm Incorporated

发明人： CHANG, Li-Chung ,  GUPTA, Bindu ,  GATHMAN, Timothy Donald ,  CHAMAS, Ibrahim Ramez

IPC分类号： H03F3/45 ,  H03F1/02 ,  H03F3/72 ,  H03F1/42 ,  H03F1/22 ,  H03F3/193 ,  H03F1/08

CPC分类号： H03H11/0466 ,  H03F1/0277 ,  H03F1/08 ,  H03F1/223 ,  H03F3/193 ,  H03F3/45183 ,  H03F3/45475 ,  H03F3/45932 ,  H03F3/72 ,  H03F2200/06 ,  H03F2200/09 ,  H03F2200/165 ,  H03F2200/168 ,  H03F2200/171 ,  H03F2200/294 ,  H03F2200/336 ,  H03F2200/411 ,  H03F2200/429 ,  H03F2200/432 ,  H03F2200/534 ,  H03F2200/541 ,  H03F2200/543 ,  H03F2203/45352 ,  H03F2203/45396 ,  H03F2203/45506 ,  H03F2203/45511 ,  H03F2203/45512 ,  H03F2203/45516 ,  H03F2203/45521 ,  H03F2203/45522 ,  H03F2203/45526 ,  H03F2203/45528 ,  H03F2203/45594 ,  H03F2203/45618 ,  H03F2203/45702 ,  H03F2203/45728 ,  H03F2203/7215 ,  H03F2203/7221 ,  H03F2203/7236 ,  H03H2210/021 ,  H03H2250/00

摘要： Techniques for designing baseband processing circuitry for radio IC's. In an aspect, techniques for differential-to-single-ended conversion in a baseband portion of the IC are disclosed to reduce the pin count and package size for RF IC's. In another aspect, the converter includes selectable narrowband and wideband amplifiers, wherein the wideband amplifiers may be implemented using transistor devices having smaller area than corresponding transistor devices of narrowband amplifiers. Further techniques for bypassing one or more elements, and for implementing a low-pass filter of the converter using an R-C filter network, are described.

公开(公告)号：EP3261250A1

公开(公告)日：2017-12-27

申请号：EP16885458.6

申请日：2016-07-19

申请人： Shenzhen Goodix Technology Co., Ltd.

发明人： ZHANG, Mengwen

IPC分类号： H03F3/45

CPC分类号： H03F1/0205 ,  H03F1/301 ,  H03F1/32 ,  H03F3/005 ,  H03F3/187 ,  H03F3/45183 ,  H03F3/45188 ,  H03F3/45192 ,  H03F3/45475 ,  H03F3/45659 ,  H03F3/45699 ,  H03F3/45762 ,  H03F2200/129 ,  H03F2200/156 ,  H03F2200/159 ,  H03F2200/18 ,  H03F2200/222 ,  H03F2200/252 ,  H03F2200/264 ,  H03F2200/471 ,  H03F2200/555 ,  H03F2203/45008 ,  H03F2203/45012 ,  H03F2203/45024 ,  H03F2203/45028 ,  H03F2203/45054 ,  H03F2203/45068 ,  H03F2203/45082 ,  H03F2203/45112 ,  H03F2203/45134 ,  H03F2203/45136 ,  H03F2203/45171 ,  H03F2203/45174 ,  H03F2203/45182 ,  H03F2203/45188 ,  H03F2203/45192 ,  H03F2203/45208 ,  H03F2203/45244 ,  H03F2203/45332 ,  H03F2203/45421 ,  H03F2203/45434 ,  H03F2203/45444 ,  H03F2203/45512 ,  H03F2203/45514 ,  H03F2203/45534 ,  H03F2203/45544 ,  H03F2203/45546 ,  H03F2203/45551 ,  H03F2203/45586 ,  H03F2203/45588 ,  H03F2203/45616 ,  H03F2203/45632 ,  H03F2203/45642 ,  H03F2203/45656 ,  H03F2203/45674 ,  H03F2203/45676

摘要： The present application provides an amplifying circuit comprising a reference voltage generating circuit, a common-mode voltage conversion circuit, a common-mode negative feedback circuit, and an amplifying sub-circuit. The reference voltage generating circuit generates a first reference voltage, a second reference voltage, and a reference common-mode voltage according to a post-stage common-mode voltage, the common-mode voltage conversion circuit converts the pre-stage output differential signal into a differential input signal according to the reference common-mode voltage, the common-mode negative feedback circuit generates a control voltage to quickly establish a common-mode negative feedback of the amplifying sub-circuit, wherein the first reference voltage and the second reference voltage are used to cancel a baseline signal of the pre-stage output differential signal. The amplifying circuit provided in the present application can eliminate the baseline signal, convert the common-mode voltage and quickly establish the common-mode negative feedback.

摘要翻译： 本申请提供一种放大电路，包括参考电压产生电路，共模电压转换电路，共模负反馈电路和放大子电路。 参考电压产生电路根据后级共模电压产生第一参考电压，第二参考电压和参考共模电压，共模电压转换电路将前级输出差分信号转换为 根据所述参考共模电压产生差分输入信号，所述共模负反馈电路产生控制电压以快速建立所述放大子电路的共模负反馈，其中，所述第一参考电压和所述第二参考电压 被用于消除前级输出差分信号的基线信号。 本申请提供的放大电路可以消除基线信号，转换共模电压，快速建立共模负反馈。

公开(公告)号：EP3193446A1

公开(公告)日：2017-07-19

申请号：EP17150596.9

申请日：2017-01-08

申请人： Melexis Technologies SA

发明人： RAMAN, Johan ,  ROMBOUTS, Pieter

IPC分类号： H03F3/393 ,  H03F3/45 ,  H03F3/00

CPC分类号： H03F3/45475 ,  G01C17/28 ,  G01D5/142 ,  G01R33/07 ,  H03F3/005 ,  H03F3/387 ,  H03F3/393 ,  H03F3/45098 ,  H03F3/45197 ,  H03F2200/129 ,  H03F2200/135 ,  H03F2200/156 ,  H03F2200/171 ,  H03F2200/261 ,  H03F2200/264 ,  H03F2200/27 ,  H03F2200/271 ,  H03F2200/294 ,  H03F2200/312 ,  H03F2200/321 ,  H03F2200/372 ,  H03F2200/375 ,  H03F2200/81 ,  H03F2203/45288 ,  H03F2203/45472 ,  H03F2203/45496 ,  H03F2203/45512 ,  H03F2203/45514 ,  H03F2203/45528 ,  H03F2203/45536 ,  H03F2203/45552 ,  H03F2203/45564 ,  H03F2203/45594 ,  H03F2203/45596

摘要： A semiconductor circuit (200) comprising an input block having a first chopper (CH1) providing a chopped voltage signal (Vin_ch), a first transconductance (G1) converting said chopped voltage signal into a chopped current signal (I_ch), a second chopper (CH2) providing a demodulated current signal (I_demod), a current integrator (CI1) having an integrating capacitor (Cint) providing a continuous-time signal (Vct), a first feedback path comprising: a sample-and-hold block and a first feedback block (G2), the first feedback path providing a proportional feedback signal (Vfb, Ifb) upstream of the current integrator (CI1). The amplification factor is at least 2. Charge stored on the integrating capacitor (Cint) at the beginning of a sample period is linearly removed during one single sampling period (Ts). Each chopper operates at a chopping frequency (fc). The sample-and-hold-block operates at a sampling frequency (fs) equal to an integer (N) times the chopping frequency (fc).

摘要翻译： 一种半导体电路（200），包括具有提供斩波电压信号（Vin_ch）的第一斩波器（CH1），将所述斩波电压信号转换成斩波电流信号（I_ch）的第一互导（G1），第二斩波器 CH2），提供解调电流信号（I_demod），具有提供连续时间信号（Vct）的积分电容器（Cint）的电流积分器（CI1），第一反馈路径包括：采样保持块和第一 反馈块（G2），第一反馈路径在电流积分器（CI1）的上游提供比例反馈信号（Vfb，Ifb）。 放大系数至少为2.在采样周期开始时存储在积分电容（Cint）上的电荷在单个采样周期（Ts）内线性移除。 每个斩波器以斩波频率（fc）运行。 采样保持块以等于斩波频率（fc）整数（N）的采样频率（fs）运行。

公开(公告)号：EP3176945A1

公开(公告)日：2017-06-07

申请号：EP15198050.5

申请日：2015-12-04

申请人： ams AG

发明人： Steiner, Matthias ,  Fitzi, Andreas

IPC分类号： H03F1/26 ,  H03F3/00 ,  H03F3/45 ,  H03F3/42

CPC分类号： H03F1/26 ,  H03F3/005 ,  H03F3/423 ,  H03F3/4521 ,  H03F3/45645 ,  H03F2200/129 ,  H03F2200/264 ,  H03F2200/372 ,  H03F2200/555 ,  H03F2200/75 ,  H03F2203/45082 ,  H03F2203/45088 ,  H03F2203/45091 ,  H03F2203/45116 ,  H03F2203/45134 ,  H03F2203/45156 ,  H03F2203/45171 ,  H03F2203/45174 ,  H03F2203/45208 ,  H03F2203/45221 ,  H03F2203/45244 ,  H03F2203/45352 ,  H03F2203/45416 ,  H03F2203/45434 ,  H03F2203/45481 ,  H03F2203/45512 ,  H03F2203/45544 ,  H03F2203/45551 ,  H03F2203/45561 ,  H03F2203/45616

摘要： An amplifier arrangement has a first differential stage with a first transistor pair, a second differential stage with a first and a second transistor pair, each pair having a common source connection coupled to a drain terminal to a respective one of the transistors of the first differential stage. The amplifier arrangement further has a first complementary differential stage with a transistor pair having opposite conductivity type compared to the transistor pair of the first differential stage, and a second complementary differential stage with a first and a second transistor pair of the complementary conductivity type. The first and the second complementary differential stage are connected symmetrically compared to the first and the second differential stage. The transistors of the second complementary differential stage are symmetrically connected to the transistors of the second differential stage such that respective first, second, third and fourth current paths are formed. A pair of output terminals is coupled to the first and the second current path. Gate terminals of the transistors of each of the stages are coupled to a respective pair of input terminals.

摘要翻译： 一种放大器装置具有：具有第一晶体管对的第一差分级，具有第一和第二晶体管对的第二差分级，每一对具有公共源极连接，该公共源极连接耦合到第一差分晶体管的相应一个晶体管的漏极端子 阶段。 放大器装置还具有第一互补差分级和第二互补差分级，第一互补差分级具有与第一差分级的晶体管对相比导电类型相反的晶体管对，第二互补差分级具有互补导电类型的第一和第二晶体管对。 与第一和第二差动级相比，第一和第二互补差动级对称地连接。 第二互补差分级的晶体管对称地连接到第二差分级的晶体管，使得分别形成第一，第二，第三和第四电流路径。 一对输出端子耦合到第一和第二电流路径。 每个级的晶体管的栅极端子耦合到相应的一对输入端子。

公开(公告)号：EP2649725A4

公开(公告)日：2016-11-02

申请号：EP11847138

申请日：2011-12-12

申请人： MARVELL WORLD TRADE LTD

发明人： CYRUSIAN SASAN

IPC分类号： H03F3/45 ,  H03F1/02 ,  H03F3/185 ,  H03F3/217 ,  H03F3/30 ,  H03F3/72 ,  H03G3/20

CPC分类号： G06F1/3287 ,  G06F1/3234 ,  H03F1/0266 ,  H03F1/0272 ,  H03F1/0283 ,  H03F3/185 ,  H03F3/2173 ,  H03F3/2178 ,  H03F3/3022 ,  H03F3/3033 ,  H03F3/45183 ,  H03F3/4521 ,  H03F3/45475 ,  H03F3/72 ,  H03F2200/03 ,  H03F2200/264 ,  H03F2200/27 ,  H03F2200/321 ,  H03F2200/75 ,  H03F2200/78 ,  H03F2203/45466 ,  H03F2203/45471 ,  H03F2203/45504 ,  H03F2203/45506 ,  H03F2203/45512 ,  H03F2203/45674 ,  H03F2203/45726 ,  H03F2203/7203

公开(公告)号：EP2720611B1

公开(公告)日：2016-04-20

申请号：EP12801854.6

申请日：2012-06-19

申请人： The Regents of the University of California

发明人： LO, Yi-kai ,  LIU, Wentai

IPC分类号： A61B5/04 ,  A61B5/0476 ,  A61B5/00 ,  A61B5/0478 ,  A61B5/0482 ,  H03F3/45

CPC分类号： A61B5/04001 ,  A61B5/04012 ,  A61B5/0476 ,  A61B5/0478 ,  A61B5/0482 ,  A61B5/7203 ,  A61B5/7225 ,  H03F3/45192 ,  H03F3/45475 ,  H03F3/45928 ,  H03F2200/165 ,  H03F2200/168 ,  H03F2200/171 ,  H03F2200/408 ,  H03F2203/45362 ,  H03F2203/45512 ,  H03F2203/45528 ,  H03F2203/45544 ,  H03F2203/45631 ,  H03F2203/45686 ,  H03F2203/45726

公开(公告)号：EP2845317A4

公开(公告)日：2015-11-25

申请号：EP13784519

申请日：2013-02-26

申请人： SAMSUNG ELECTRONICS CO LTD

发明人： LEE JONG-WOO

IPC分类号： H03F3/45 ,  H03G1/00 ,  H03H11/04 ,  H03H11/12

CPC分类号： H03F3/45076 ,  H03F1/34 ,  H03F3/45475 ,  H03F2200/405 ,  H03F2203/45512 ,  H03F2203/45514 ,  H03F2203/45522 ,  H03F2203/45528 ,  H03F2203/45534 ,  H03F2203/45536 ,  H03F2203/45591 ,  H03F2203/45594 ,  H03G1/0088 ,  H03G1/0094 ,  H03H11/126 ,  H03H11/1291 ,  H03H2210/025 ,  H03H2210/036

公开(公告)号：EP2792070A4

公开(公告)日：2015-07-22

申请号：EP12856900

申请日：2012-12-14

申请人： SAMSUNG ELECTRONICS CO LTD

发明人： LEE JONG-WOO ,  JUN SI-BUM

IPC分类号： H03F3/45 ,  H03F1/34 ,  H03F3/195 ,  H03F3/70 ,  H03H11/12

CPC分类号： H03F3/45071 ,  H03F1/342 ,  H03F3/195 ,  H03F3/45179 ,  H03F3/45475 ,  H03F3/45654 ,  H03F3/45977 ,  H03F2200/294 ,  H03F2200/336 ,  H03F2200/405 ,  H03F2200/451 ,  H03F2203/45138 ,  H03F2203/45404 ,  H03F2203/45421 ,  H03F2203/45422 ,  H03F2203/45444 ,  H03F2203/45512 ,  H03F2203/45514 ,  H03F2203/45522 ,  H03F2203/45526 ,  H03F2203/45528 ,  H03F2203/45591 ,  H03F2203/45594 ,  H03L7/00

摘要： An operational amplifier circuit is provided. The operational amplifier circuit includes a differential amplifier of a cascade structure and a switched-capacitor type Common-Mode FeedBack (CMFB) circuit. The differential amplifier amplifies a difference between two input signals to output an anode output voltage and a negative output voltage. The switched-capacitor type CMFB circuit averages the anode output voltage and the negative output voltage of the differential amplifier, compares the average voltage with a reference voltage to generate a feedback signal based on a result of the comparison, and provides the feedback signal to the differential amplifier. Therefore, power consumption is reduced and a battery use time of a wireless terminal can be extended. Also, since an operational amplifier gain of each analog filter terminal is not negatively affected, a Direct Current (DC) offset is reduced, thereby improving signal quality.

公开(公告)号：EP2824832A1

公开(公告)日：2015-01-14

申请号：EP13175882.3

申请日：2013-07-10

申请人： AMS AG

发明人： Dünser, Wolfgang ,  Bingesser, Markus ,  Fröhlich, Thomas

IPC分类号： H03F1/30 ,  H03F3/45 ,  H03F3/181

CPC分类号： H03F3/183 ,  H03F1/30 ,  H03F3/181 ,  H03F3/45076 ,  H03F3/45475 ,  H03F2200/03 ,  H03F2203/45116 ,  H03F2203/45136 ,  H03F2203/45511 ,  H03F2203/45512 ,  H03F2203/45514 ,  H03F2203/45521 ,  H03F2203/45522 ,  H03F2203/45528 ,  H03F2203/45534 ,  H04R1/04 ,  H04R2201/003

摘要： An electric amplifier circuit for amplifying an output signal of a microphone comprises a supply input terminal (V10) to apply a supply potential (VDDA) for operating the electric amplifier circuit and a differential amplifier (110) having a first input terminal (E110a) for applying the output signal of the microphone (20), a second input terminal (E110b) and an output terminal (A110) for outputting an amplified output signal (OUT) of the microphone (20). A feedback path (FP) is provided between the output terminal (A110) of the differential amplifier (110) and the second input terminal (E110b) of the differential amplifier (110). A charge supplying circuit (120) is coupled to the feedback path (FP) to supply an amount of the charge to the feedback path (FP) in dependence on the supply potential (VDDA). The amount of charge supplied to the feedback path may be dependent on a change of the supply potential (VDDA).

摘要翻译： 一种用于放大麦克风的输出信号的电放大器电路包括用于施加用于操作电放大器电路的电源电位（VDDA）的电源输入端子（V10）和用于具有第一输入端子（E110a）的差分放大器（110），用于 施加麦克风（20）的输出信号，第二输入端子（E110b）和输出端子（A110），用于输出麦克风（20）的放大输出信号（OUT）。 在差分放大器（110）的输出端子（A110）和差分放大器（110）的第二输入端子（E110b）之间提供反馈路径（FP）。 电荷供应电路（120）耦合到反馈路径（FP）以根据电源电位（VDDA）向反馈路径（FP）供应一定量的电荷。 提供给反馈路径的电荷量可以取决于供电电位（VDDA）的变化。