公开(公告)号：EP3407489A1

公开(公告)日：2018-11-28

申请号：EP17202320.2

申请日：2017-11-17

申请人： Tymphany HK Limited

发明人： DE VRIES, Sebastiaan

IPC分类号： H03F3/187 ,  H03F3/45 ,  H04R3/00 ,  H03F3/72 ,  H03F1/56 ,  H03F3/68

CPC分类号： H03F3/45475 ,  H03F1/56 ,  H03F3/187 ,  H03F3/68 ,  H03F2200/03 ,  H03F2200/222 ,  H03F2200/261 ,  H03F2200/42 ,  H03F2200/48 ,  H03F2203/7233 ,  H04R3/00 ,  H04R2420/09

摘要： A switchless pre-amplifier input circuit includes an audio input connector that receives a first audio device operable at a first impedance and a second audio device operable at a second impedance less than the first impedance. A preamplifier circuit outputs a pre-amplified audio signal in response to amplifying a first audio signal generated by the first audio device or a second audio signal generated by the second audio device. The switchless pre-amplifier input circuit further includes a impedance selector circuit that adjusts an impedance at the output to reach the second impedance in response to connecting the second audio device to the audio input connector and to adjust the impedance at the output to reach the first impedance in response to connecting the first audio device to the audio input.

公开(公告)号：EP2852055B1

公开(公告)日：2018-09-19

申请号：EP14176166.8

申请日：2014-07-08

申请人： Honeywell International Inc.

发明人： Larson, Mark R.

IPC分类号： H03F3/45

CPC分类号： H03F3/45071 ,  H03F3/45475 ,  H03F2200/252 ,  H03F2200/261 ,  H03F2200/447 ,  H03F2203/45522 ,  H03F2203/45528 ,  H03F2203/45534 ,  H03F2203/45536 ,  H03F2203/45591 ,  H03F2203/45594 ,  H03F2203/45604 ,  H03F2203/45616 ,  H03F2203/45618 ,  H03G1/0088 ,  H03G3/3026

摘要： A device comprises a first amplifier, a first resistive element that comprises a first resistor and a first dummy switch, a second amplifier, a second resistive element that comprises a second resistor and a second dummy switch, and a programmable resistive gain element operable to receive control input, wherein a resistance value of the programmable resistive gain element is based at least in part on the received control input, wherein a first end of the programmable resistive gain element is connected to both the first inverting input of the first amplifier and to a second end of the first dummy switch, and wherein a second end of the programmable resistive gain element is connected to both the second inverting input of the second amplifier and to a second end of the second dummy switch.

公开(公告)号：EP3314757A1

公开(公告)日：2018-05-02

申请号：EP15736741.8

申请日：2015-06-25

申请人： Micro Motion, Inc.

发明人： SHOUCHE, Ulhas Arun ,  MANSFIELD, William M. ,  BHOSALE, Vishal Vishwasrao

IPC分类号： H03F1/52 ,  H03F3/08 ,  H03F3/217 ,  H04B10/80

CPC分类号： H03F1/52 ,  H03F3/085 ,  H03F3/217 ,  H03F2200/261 ,  H03F2200/444 ,  H03K17/78 ,  H04B10/802

摘要： An input protection circuit (110) for an optocoupler (20) is provided. The input protection circuit (110) includes a first voltage limiter (D1) with a first terminal that is electrically coupled to an input terminal of an amplifier circuit (120), wherein the input terminal of the amplifier circuit (120) is configured to receive a PWM signal and the amplifier circuit (120) is configured to provide a voltage to the optocoupler (20).

公开(公告)号：EP3168987A4

公开(公告)日：2018-02-21

申请号：EP14897045

申请日：2014-07-08

申请人： MITSUBISHI ELECTRIC CORP

发明人： NAKAI TAKAYUKI

IPC分类号： H03F1/02 ,  H03F3/30 ,  H03F3/45

CPC分类号： H03F1/0233 ,  H03F1/0277 ,  H03F3/3028 ,  H03F3/45219 ,  H03F3/45475 ,  H03F3/45748 ,  H03F2200/261

摘要： Bias current is supplied to a differential pair (D10) and a differential pair (D20) from a transistor N10 being a single current source. Bias current is supplied to a differential pair (D30) and a differential pair (D40) from a transistor P30 being a single current source. According to this configuration, an input voltage (VINP) is at a power supply potential, and an input voltage (VINM) is at a ground potential. When the differential pair (D20) and the differential pair (D30) are turned OFF, the bias current supplied from the transistor (N10) being the current source flows to an output stage via the differential pair (D10), and the bias current supplied from the transistor (P30) being the current source flows to the output stage via the differential pair (D40). Therefore, when the differential pair (D20) and the differential pair (D30) are turned OFF, a circuit current is kept constant, and a fluctuation in a frequency characteristic can be restrained.

公开(公告)号：EP3165159A3

公开(公告)日：2017-09-13

申请号：EP16183655.6

申请日：2016-08-11

申请人： Samsung Electronics Co., Ltd.

发明人： KIM, Jong Pal

IPC分类号： A61B5/04 ,  A61B5/0428 ,  A61B5/00 ,  H03F3/45 ,  H03G1/00 ,  H03K17/00 ,  H03K5/003 ,  H03M3/02 ,  G11C27/02 ,  H03M1/12

CPC分类号： H03K5/003 ,  A61B5/04004 ,  A61B5/0428 ,  A61B5/04288 ,  A61B5/7225 ,  A61B2560/0209 ,  G11C27/024 ,  G11C27/026 ,  H03F3/45475 ,  H03F2200/261 ,  H03F2203/45428 ,  H03F2203/45551 ,  H03M1/124 ,  H03M3/02

摘要： A signal processing apparatus includes: a difference signal acquirer configured to obtain a difference signal reflecting a change in an input signal at a preset time interval based on a reference signal; a signal amplifier configured to amplify the difference signal; and a signal restorer configured to generate an output signal by converting the amplifed difference signal to a digital signal and summing the digital signal.

摘要翻译： 一种信号处理装置，包括：差分信号获取器，被配置为基于参考信号获得反映预定时间间隔的输入信号的变化的差分信号; 信号放大器，被配置为放大差信号; 以及信号恢复器，被配置为通过将放大的差值信号转换成数字信号并对数字信号求和来产生输出信号。

公开(公告)号：EP3170256A1

公开(公告)日：2017-05-24

申请号：EP14897832.3

申请日：2014-07-14

申请人： Covidien LP

发明人： LIAO, Zhongyu

IPC分类号： H03F1/56 ,  H03H7/38

CPC分类号： A61B18/1815 ,  A61B2018/00577 ,  A61B2018/1823 ,  A61B2018/1876 ,  H03F1/56 ,  H03F3/19 ,  H03F3/21 ,  H03F3/245 ,  H03F2200/111 ,  H03F2200/222 ,  H03F2200/255 ,  H03F2200/261 ,  H03F2200/387 ,  H03F2200/423 ,  H03H7/38

摘要： A dual band power amplifier includes a power amplifier, a first matching circuit, a first auxiliary circuit, a second matching circuit, and a second auxiliary circuit. The power amplifier has inputs and outputs, and configured to amplify input signals at a first and second frequency. The first matching circuit electrically connected to the output of the power amplifier and configured to match a load impedance to an output impedance at the first frequency. The first matching circuit and the first auxiliary circuit configured to match the load impedance to the output impedance at the second frequency. The second matching circuit electrically connected to the input of the power amplifier and configured to match a source impedance to an input impedance at the first frequency. The second matching circuit and the second auxiliary circuit configured to match the source impedance to the input impedance at the second frequency.

摘要翻译： 双频带功率放大器包括功率放大器（420），第一匹配电路（450），第一辅助电路（470），第二匹配电路（440）和第二辅助电路（460）。 功率放大器（420）具有输入和输出，并且被配置为以第一和第二频率放大输入信号。 第一匹配电路（450）电连接到功率放大器（420）的输出并被配置为将负载阻抗匹配到第一频率处的输出阻抗。 第一匹配电路（450）和第一辅助电路（470）被配置为将负载阻抗匹配于第二频率下的输出阻抗。 第二匹配电路（440）电连接到功率放大器（420）的输入端，并被配置为将源阻抗匹配到第一频率处的输入阻抗。 第二匹配电路（440）和第二辅助电路（460）被配置为将源阻抗匹配于第二频率下的输入阻抗。

公开(公告)号：EP3012971A4

公开(公告)日：2016-11-30

申请号：EP14814595

申请日：2014-06-17

申请人： ASAHI KASEI MICRODEVICES CORP

发明人： OGAWA TOMOHIKO ,  KOIZUMI YOSHIHIKO

IPC分类号： H03F3/34 ,  G01P3/44 ,  G01P3/487 ,  G01P15/12

CPC分类号： H03F1/56 ,  G01P3/44 ,  G01P3/487 ,  G01P15/12 ,  G01P15/123 ,  G01R27/02 ,  H03F3/45071 ,  H03F3/45475 ,  H03F3/45932 ,  H03F2200/261 ,  H03F2200/294 ,  H03F2200/504 ,  H03F2200/555 ,  H03F2203/45138 ,  H03F2203/45336 ,  H03F2203/45528 ,  H03F2203/45591 ,  H03F2203/45592

摘要： The present disclosure is related to an amplifier circuit in which noise components are reduced to achieve a high SN ratio, a low noise, and a small area, and an amplifier circuit IC chip. An amplifier circuit (100) includes a converter (70) configured to convert a predefined physical quantity to a resistance value, and the resistance value converted by the converter (70) is converted to a voltage value and then amplified. The converter (70) includes variable resistance sensors (71, 72) of piezoresistance elements. A bias unit (80) is configured to determine a bias current of the converter (70), and includes bias resistances (81, 82). An operation amplifier unit (90) receives, as input signals, output signals from the bias unit (80) and the converter (70), and includes feedback resistances (91, 92) respectively connected to input and output ends of a first operational amplifier (101). The first operational amplifier (101) is a whole differential operational amplifier including a common-mode feedback circuit.

公开(公告)号：EP3079133A1

公开(公告)日：2016-10-12

申请号：EP14868241.2

申请日：2014-12-01

申请人： CSMC Technologies Fab1 Co., Ltd.

发明人： WANG, Xueyan ,  ZHANG, Weiyan

IPC分类号： G08C13/00

CPC分类号： H03F3/005 ,  G01P15/0802 ,  G01P15/123 ,  H03F3/387 ,  H03F3/45475 ,  H03F2200/165 ,  H03F2200/261 ,  H03F2200/264 ,  H03F2203/45138 ,  H03F2203/45514 ,  H03G1/0094 ,  H03H7/075

摘要： A sensor control circuit comprises a sensor (201), a filtering circuit (202), a buffering circuit (203), and an amplifying circuit (204). An output end of the sensor (201) is connected to an input end of the filtering circuit (202), an output end of the filtering circuit (202) is connected to an input end of the buffering circuit (203), and an output end of the buffering circuit (203) is connected to an input end of the amplifying circuit (204). Because the buffering circuit (203) is disposed between the filtering circuit (202) and the amplifying circuit (204), the sensor circuit has an advantage of full sampling. Further provided is an electronic apparatus using the sensor control circuit.

摘要翻译： 传感器控制电路包括传感器（201），滤波电路（202），缓冲电路（203）和放大电路（204）。 传感器（201）的输出端连接到滤波电路（202）的输入端，滤波电路（202）的输出端连接到缓冲电路（203）的输入端，输出端 缓冲电路（203）的端部连接到放大电路（204）的输入端。 由于缓冲电路（203）设置在滤波电路（202）和放大电路（204）之间，所以传感器电路具有全采样的优点。 还提供了一种使用传感器控制电路的电子设备。

公开(公告)号：EP2819306B1

公开(公告)日：2016-04-06

申请号：EP13173913.8

申请日：2013-06-27

申请人： IMEC

发明人： Van Helleputte, Nick ,  Yazicioglu, Refet Firat

IPC分类号： H03F3/45 ,  H03F1/34

CPC分类号： H03F1/34 ,  H03F3/45 ,  H03F3/45932 ,  H03F3/45941 ,  H03F3/68 ,  H03F2200/261 ,  H03F2203/45084 ,  H03F2203/45114 ,  H03F2203/45116

公开(公告)号：EP2592652A3

公开(公告)日：2015-09-30

申请号：EP12007611.2

申请日：2012-11-08

申请人： IMEC

发明人： Van Helleputte, Nick

IPC分类号： H01L27/08 ,  H03F1/56 ,  H03F3/45 ,  A61B5/00 ,  A61B5/04 ,  A61B5/053

CPC分类号： A61B5/7214 ,  A61B5/04017 ,  A61B5/0402 ,  A61B5/0531 ,  H01L27/0811 ,  H03F1/56 ,  H03F3/45475 ,  H03F2200/213 ,  H03F2200/261 ,  H03F2203/45538 ,  H03F2203/45544 ,  H03F2203/45548 ,  H03F2203/45576

摘要： The invention relates to a variable capacitor circuit (100) comprising a plurality of MOS capacitors (110), each MOS capacitor being implemented by a MOS transistor with the gate terminal connected to a first voltage signal (Vs) and with the drain terminal shorted with the source terminal and connected to a second voltage signal (Vc), said MOS capacitors being connected in parallel through the gate terminal connected to the first voltage signal (Vs), and being operated in a cut-off region (120) in which the equivalent capacitance (C) of each MOS capacitor remains substantially constant for variations of the first voltage signal. The invention also relates to a method for compensating a capacitance mismatch in a biomedical signal acquisition system using the described variable capacitor circuit (100).