公开(公告)号：US20240097631A1

公开(公告)日：2024-03-21

申请号：US18262626

申请日：2022-03-14

Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC

Inventor： Catalin Ionut PETROIANU

IPC: H03F3/45

CPC classification number: H03F3/45179 ,  H03F3/4508 ,  H03F2200/135 ,  H03F2203/45512

Abstract: The operational amplifier disclosed includes an input stage configured to receive power from a floating supply in a low voltage range that can float according to the common mode voltage at the input. The floating supply facilitates the use of low voltage components that can improve the precision of the operational amplifier by lowering the offset voltage. The input stage includes a first gain stage including field effect transistors and a second gain stage using bipolar transistors. The gain stages can be implemented differently to accommodate different applications and fabrication capabilities.

公开(公告)号：US20190068212A1

公开(公告)日：2019-02-28

申请号：US16110891

申请日：2018-08-23

Applicant: IMEC vzw

Inventor： Benjamin Hershberg ,  Ewout Martens ,  Jan Craninckx

IPC: H03M1/18 ,  H03F3/50 ,  G05F1/70 ,  G01R29/26 ,  H03M13/00

CPC classification number: H03M1/183 ,  G01R29/26 ,  G05F1/70 ,  H03F1/301 ,  H03F1/308 ,  H03F1/3205 ,  H03F1/3211 ,  H03F1/3217 ,  H03F1/342 ,  H03F3/005 ,  H03F3/3028 ,  H03F3/45183 ,  H03F3/45237 ,  H03F3/45475 ,  H03F3/505 ,  H03F2200/129 ,  H03F2200/135 ,  H03F2200/153 ,  H03F2200/156 ,  H03F2200/159 ,  H03F2200/249 ,  H03F2200/252 ,  H03F2200/27 ,  H03F2200/42 ,  H03F2200/471 ,  H03F2200/546 ,  H03F2200/78 ,  H03M13/612

Abstract: The disclosed technology relates to a method for improving performance of a feedback circuit comprising an amplifier and a feedback network, wherein the feedback circuit has at least one tunable component. In one aspect, the method comprises measuring first amplitude values at an input of the amplifier and second amplitude values at an output of the amplifier, estimating a linear open-loop gain of the amplifier based on both the amplitude values, estimating a linear finite gain error based on the estimated gain and the second amplitude values, subtracting the linear finite gain error from the first amplitude values to derive a set of samples containing second error information, deriving an signal-to-noise-plus-distortion ratio estimate based on the variance of the set of samples and a variance of the second amplitude values, and adjusting the feedback circuit in accordance with the signal-to-noise-plus-distortion ratio estimate.

公开(公告)号：US20180331658A1

公开(公告)日：2018-11-15

申请号：US15794431

申请日：2017-10-26

Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.

Inventor： Byeong Hak JO ,  Jeong Hoon KIM ,  Hyun PAEK ,  Jong Ok HA

IPC: H03F1/02 ,  H03F3/195 ,  H03F3/213

CPC classification number: H03F1/0233 ,  H03F3/195 ,  H03F3/213 ,  H03F2200/135 ,  H03F2200/451 ,  H03F2200/555 ,  H03F2200/78

Abstract: A power amplifying apparatus includes a control circuit generating a bias voltage and generating a control signal using a battery voltage and a reference voltage, and a power amplifying circuit boosting the battery voltage according to the control signal to provide an operating voltage, and operating according to the bias voltage and the operating voltage to amplify an input signal, wherein the power amplifying circuit detects the operating voltage and provides a detection voltage to the control circuit, and the control circuit controls the control signal according to the detection voltage.

公开(公告)号：US20180159485A1

公开(公告)日：2018-06-07

申请号：US15831220

申请日：2017-12-04

Applicant: SILICON INTEGRATED SYSTEMS CORP.

Inventor： Ssu-Che YANG ,  Wen-Chi Lin ,  Keng-Nan Chen

IPC: H03F1/34 ,  H03F1/32 ,  H03F3/345 ,  H03F3/347 ,  H03F3/50 ,  H03K5/02

CPC classification number: H03F1/342 ,  G05F1/00 ,  H03F1/301 ,  H03F1/3205 ,  H03F3/345 ,  H03F3/347 ,  H03F3/45183 ,  H03F3/45475 ,  H03F3/505 ,  H03F2200/135 ,  H03F2200/447 ,  H03F2203/5012 ,  H03K5/023

Abstract: A source follower includes a first transistor, a first output module, a second transistor, a second output module and a feedback module. The first terminal and the control terminal of the first transistor are configured to respectively receive a first base voltage and a first control voltage. The second terminal of the first transistor and the first output module are electrically connected to a first output terminal. The first terminal and the control terminal of the second transistor are configured to respectively receive a first base voltage and a second control voltage. The second terminal of the second transistor and the second output module are electrically connected to a second output terminal. The feedback module is electrically connected to the control terminal of the first transistor, the control terminal of the second transistor and a reference node of the second output module.

公开(公告)号：US09843297B2

公开(公告)日：2017-12-12

申请号：US14814080

申请日：2015-07-30

Applicant: COSEMI TECHNOLOGIES, INC.

Inventor： Robert Monroe Smith ,  Charles Phillip McClay

IPC: H03F3/45 ,  H03F3/08 ,  H03F1/56 ,  H03F1/02 ,  H03F1/08

CPC classification number: H03F1/56 ,  H03F1/0205 ,  H03F1/083 ,  H03F3/08 ,  H03F3/45076 ,  H03F3/45085 ,  H03F3/45183 ,  H03F3/45475 ,  H03F3/45605 ,  H03F3/45609 ,  H03F3/45618 ,  H03F3/45753 ,  H03F3/45757 ,  H03F3/45766 ,  H03F3/45977 ,  H03F3/45982 ,  H03F3/45991 ,  H03F2200/135 ,  H03F2200/18 ,  H03F2200/222 ,  H03F2200/228 ,  H03F2200/36 ,  H03F2200/393 ,  H03F2200/453 ,  H03F2200/456 ,  H03F2200/462 ,  H03F2200/471 ,  H03F2200/474 ,  H03F2200/72 ,  H03F2200/75 ,  H03F2203/45036 ,  H03F2203/45051 ,  H03F2203/45114 ,  H03F2203/45116 ,  H03F2203/45138 ,  H03F2203/45146 ,  H03F2203/45152 ,  H03F2203/45154 ,  H03F2203/45166 ,  H03F2203/45202 ,  H03F2203/45208 ,  H03F2203/45221 ,  H03F2203/45276 ,  H03F2203/45336 ,  H03F2203/45374 ,  H03F2203/45398 ,  H03F2203/45528 ,  H03F2203/45541 ,  H03F2203/45556 ,  H03F2203/45564 ,  H03F2203/45566 ,  H03F2203/45592 ,  H03F2203/45594 ,  H03F2203/45652 ,  H03F2203/45682 ,  H03F2203/45702

Abstract: A balanced differential transimpedance amplifier with a single-ended input operational over a wide variation in the dynamic range of input signals. A threshold circuit is employed to either or a combination of (1) generate a varying decision threshold to ensure a proper slicing over a wide range of input current signal levels; and (2) generate a bias current and voltage applied to an input of a transimpedance stage to cancel out a dependence of the transimpedance stage voltage input on input current signal levels.

公开(公告)号：US09628039B2

公开(公告)日：2017-04-18

申请号：US15092395

申请日：2016-04-06

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Shota Ishihara

IPC: G06G7/12 ,  H03G3/30 ,  H03F3/19 ,  H03F1/02 ,  H03F1/34 ,  H03F3/191 ,  H03F3/21

CPC classification number: H03G3/3042 ,  H03F1/0261 ,  H03F1/34 ,  H03F1/56 ,  H03F3/19 ,  H03F3/191 ,  H03F3/21 ,  H03F2200/135 ,  H03F2200/222 ,  H03F2200/27 ,  H03F2200/318 ,  H03F2200/324 ,  H03F2200/387 ,  H03F2200/408 ,  H03F2200/451

Abstract: Provided is a power amplification module that includes: a first amplification circuit that amplifies a first signal and outputs the amplified first signal as a second signal; a second amplification circuit that amplifies the second signal and outputs the amplified second signal as a third signal; and a feedback circuit that re-inputs/feeds back the second signal outputted from the first amplification circuit to the first amplification circuit as the first signal. The operation of the first amplification circuit is halted and the first signal passes through the feedback circuit and is outputted as the second signal at the time of a low power output mode.

公开(公告)号：US20170093350A1

公开(公告)日：2017-03-30

申请号：US15232422

申请日：2016-08-09

Applicant: Dialog Semiconductor (UK) Limited

Inventor： Carlos Zamarreno Ramos ,  Ambreesh Bhattad ,  Frank Kronmueller

IPC: H03F1/34 ,  H03F3/45 ,  H03F3/193

CPC classification number: H03F1/342 ,  H03F1/14 ,  H03F3/193 ,  H03F3/45179 ,  H03F3/45475 ,  H03F2200/135 ,  H03F2200/153 ,  H03F2200/297 ,  H03F2200/36 ,  H03F2200/411 ,  H03F2200/462 ,  H03F2200/474

Abstract: A multi-stage amplifier, comprising a first amplifier stage is presented. The output of the first amplifier stage is coupled to a first terminal of a capacitor having a controllable capacitance. The input of a second amplifier stage is coupled to the output of the first amplifier stage and the first terminal of the capacitor. The output of the second amplifier stage is coupled to a second terminal of the capacitor and an output of the multi-stage amplifier. The input of a current sensing circuit is coupled with the output of the multi-stage amplifier. A control signal generator is coupled between the output of the current sensing circuit and a control terminal of the capacitor. The control signal generator provides a control signal to the capacitor in order to control or vary the capacitance of the capacitor.

公开(公告)号：US09602070B2

公开(公告)日：2017-03-21

申请号：US14848033

申请日：2015-09-08

Applicant: Kabushiki Kaisha Toshiba

Inventor： Hiroyuki Tsurumi

IPC: H03F3/217 ,  H03G3/30 ,  H03F3/185 ,  H03F3/45 ,  H03F3/68 ,  H03F3/21

CPC classification number: H03G3/3031 ,  H03F3/185 ,  H03F3/211 ,  H03F3/217 ,  H03F3/2173 ,  H03F3/3064 ,  H03F3/45179 ,  H03F3/68 ,  H03F2200/03 ,  H03F2200/135 ,  H03G3/3005

Abstract: The power amplifying device includes a first potential line to which a first potential is supplied, a second potential line to which a second potential that is lower than the first potential is supplied and a third potential line to which a third potential that is between the first potential and the second potential is supplied. The power amplifying device includes a first BTL amplifier unit. The power amplifying device includes a second BTL amplifier unit. The power amplifying device includes a third BTL amplifier unit. The power amplifying device includes a fourth BTL amplifier unit that has a seventh output amplifier and an eighth output amplifier.

公开(公告)号：US09559647B2

公开(公告)日：2017-01-31

申请号：US14402681

申请日：2012-05-21

Applicant: Ivan Riis Nielsen

Inventor： Ivan Riis Nielsen

IPC: H03F1/36 ,  H03F3/45 ,  H03F1/26 ,  H03F3/181 ,  H03F1/02 ,  H03F1/56 ,  H04R3/00 ,  H03F3/21 ,  H04R19/04

CPC classification number: H03F3/45475 ,  H03F1/0272 ,  H03F1/26 ,  H03F1/56 ,  H03F3/181 ,  H03F3/211 ,  H03F3/45273 ,  H03F2200/135 ,  H03F2200/387 ,  H03F2200/48 ,  H03F2203/45166 ,  H03F2203/45288 ,  H04R3/00 ,  H04R19/04

Abstract: The present disclosure relates to an amplifier circuit (2) for a capacitive transducer (1), comprising a preamplifier (8) adapted to receive a transducer signal through an input node (9) and to provide an amplified signal at an output node (10), and a transconductance amplifier (11) comprising a first input (12) and an output (14), wherein the first input (12) of the transconductance amplifier (11) is connected to the output node (10), and the output (14) of the transconductance amplifier (11) is connected to the input node (9).

Abstract translation: 本发明涉及一种用于电容换能器（1）的放大器电路（2），包括：前置放大器（8），其适于通过输入节点（9）接收换能器信号，并在输出节点（10）处提供放大的信号 ）和跨导放​​大器（11），包括第一输入（12）和输出（14），其中跨导放大器（11）的第一输入端（12）连接到输出节点（10），输出端 跨导放大器（11）的输出端（14）连接到输入节点（9）。

公开(公告)号：US09525389B2

公开(公告)日：2016-12-20

申请号：US14746896

申请日：2015-06-23

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Hiroyuki Hirooka

IPC: H03F3/19 ,  H03F1/02 ,  H03F1/56 ,  H03F3/191

CPC classification number: H03F3/19 ,  H03F1/0205 ,  H03F1/0261 ,  H03F1/56 ,  H03F3/191 ,  H03F2200/135 ,  H03F2200/18 ,  H03F2200/222 ,  H03F2200/387 ,  H03F2200/411 ,  H03F2200/451 ,  H03F2200/555

Abstract: A high-frequency amplifier circuit (10) includes a high-frequency amplifier (101) and a bias circuit (20). The bias circuit (20) includes bias control elements (102, 103). An emitter of the bias control element (102) is connected to a base of the amplifier (101) via a resistor (201). An emitter of the bias control element (103) is connected to a collector of a switch element (104) via a resistor (203). The switch element (104) is a common emitter. A resistor (204) is connected between the emitter of the bias control element (102) and the emitter of the bias control element (103). A control voltage (VCTL) is applied to bases of the bias control elements (102, 103). A bias current adjustment voltage (VLIN) corresponding to an operation mode is applied to a base of the switch element (104).

Abstract translation: 高频放大器电路（10）包括高频放大器（101）和偏置电路（20）。 偏置电路（20）包括偏置控制元件（102,103）。 偏置控制元件（102）的发射极经由电阻器（201）连接到放大器（101）的基极。 偏置控制元件（103）的发射极经由电阻器（203）连接到开关元件（104）的集电极。 开关元件（104）是公共发射极。 电阻器（204）连接在偏置控制元件（102）的发射极和偏置控制元件（103）的发射极之间。 控制电压（VCTL）被施加到偏置控制元件（102,103）的基极。 对应于操作模式的偏置电流调节电压（VLIN）被施加到开关元件（104）的基极。