专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20190242929A1 CURRENT DETECTION CIRCUIT 审中-公开
公开(公告)号：US20190242929A1
公开(公告)日：2019-08-08
申请号：US16118150
申请日：2018-08-30
申请人： KABUSHIKI KAISHA TOSHIBA , TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
发明人： Hiroshi YOSHINO
IPC分类号： G01R19/00 , H03F3/45 , H02P29/00
CPC分类号： G01R19/0092 , H02P29/00 , H03F3/45183 , H03F2200/126 , H03F2200/129 , H03F2200/156 , H03F2200/267 , H03F2200/301 , H03F2200/366 , H03F2200/462 , H03F2203/45116 , H03F2203/45512 , H03F2203/45518 , H03F2203/45534
摘要： A current detection circuit has a differential amplification circuit that outputs a differential output current dependent on a voltage difference between input terminals and first and second feedback circuits that output a detection current in response to the differential output current and form a feedback path to each input terminal of the differential amplification circuit. First and second MOS transistors that generate voltages dependent on respective source-drain voltages at a time when drain currents in a forward direction and a backward direction flow through an output MOS transistor are connected to respective input terminals of the differential amplification circuit.

2. 发明申请

US20180375481A1 I-V CONVERSION MODULE 审中-公开
公开(公告)号：US20180375481A1
公开(公告)日：2018-12-27
申请号：US16057216
申请日：2018-08-07
申请人： SHENZHEN GOODIX TECHOLOGY CO., LTD.
发明人： Mengwen ZHANG
IPC分类号： H03F1/42 , H03F1/02 , H03K3/012
CPC分类号： H03F1/42 , G01B15/00 , G05F1/565 , H03F1/0211 , H03F3/005 , H03F3/70 , H03F3/72 , H03F2200/156 , H03F2200/159 , H03F2200/213 , H03F2200/231 , H03F2200/264 , H03F2200/36 , H03G1/0094 , H03G3/008 , H03G3/3031 , H03G5/12 , H03K3/012 , H03K19/14
摘要： An I-V conversion module includes: a current output type sensor, a pre-integral circuit, a charge transfer auxiliary circuit, and an I-V transformation circuit including an inverting amplifier. The current output type sensor is connected to an input end of the I-V transformation circuit through the pre-integral circuit. The charge transfer auxiliary circuit connects in parallel with the inverting amplifier. When both the pre-integral circuit and the charge transfer auxiliary circuit are open circuits, the pre-integral circuit pre-integrates the induction current output by the current output type sensor to store pre-integral charges. When both pre-integral circuit and the charge transfer auxiliary circuit are closed circuits, the pre-integral charges are transferred to the I-V transformation circuit. In these embodiments, both the time for establishing the I-V conversion module and power consumption can be reduced.

3. 发明授权

US10063200B2 Feedback circuit for power amplifier 有权
公开(公告)号：US10063200B2
公开(公告)日：2018-08-28
申请号：US15465503
申请日：2017-03-21
申请人： SKYWORKS SOLUTIONS, INC.
发明人： Andy Cheng Pang Wu , Yu-Jui Lin , Peter Phu Tran
IPC分类号： H03G3/30 , H03G1/00 , H03F1/34 , H03F3/195 , H03F3/24 , H03F1/02 , H04B1/40
CPC分类号： H03G1/0088 , H03F1/0222 , H03F1/0261 , H03F1/342 , H03F1/56 , H03F3/19 , H03F3/195 , H03F3/211 , H03F3/245 , H03F3/68 , H03F2200/111 , H03F2200/121 , H03F2200/129 , H03F2200/144 , H03F2200/156 , H03F2200/18 , H03F2200/222 , H03F2200/27 , H03F2200/387 , H03F2200/411 , H03F2200/451 , H03G3/3042 , H04B1/40
摘要： Feedback circuit for power amplifier. In some embodiments, a radio-frequency amplifier can include a bipolar junction transistor configured to amplify a signal, and having an input and an output. The radio-frequency amplifier can further include a feedback circuit implemented between the output and input of the bipolar junction transistor. The feedback circuit can include a parallel assembly of a field-effect transistor and a resistive element such that the resistive element is bypassed when the field-effect transistor is ON and an overall resistance of the feedback circuit includes the resistive element when the field-effect transistor is OFF. Such a feedback circuit can be configured to be capable of providing a plurality of resistance values between the output and input of the bipolar junction transistor to facilitate different gains of the bipolar junction transistor.

4. 发明授权

US09986336B2 Headphone driver, a sound system that incorporates the headphone driver and a computing system that incorporates the headphone driver 有权
公开(公告)号：US09986336B2
公开(公告)日：2018-05-29
申请号：US15332275
申请日：2016-10-24
申请人： SAMSUNG ELECTRONICS CO., LTD.
发明人： Sang Hyub Kang , Sun Woo Kwon , Hyun Sun Shim , Myung Jin Lee
IPC分类号： H04R3/12 , H03F3/45 , H03G1/00 , H03H7/075 , H04R5/04 , H03F3/183 , H03F3/187 , H03H7/24 , H04R1/10
CPC分类号： H04R3/12 , H03F3/183 , H03F3/187 , H03F3/45475 , H03F2200/156 , H03F2200/211 , H03F2200/252 , H03F2203/45528 , H03F2203/45534 , H03F2203/45604 , H03F2203/45616 , H03G1/0035 , H03G1/0088 , H03G3/3026 , H03H7/075 , H03H7/24 , H04R1/1083 , H04R5/04
摘要： A headphone driver, a sound processor that incorporates the headphone driver and a computing system that incorporates the headphone driver, wherein the headphone driver includes an amplifier having an input terminal and an output terminal, an R-2R ladder network provided with an input signal and connected to the input terminal of the amplifier, and a feedback resistor group connected to the input terminal and to the output terminal of the amplifier. The R-2R ladder network includes a plurality of resistor branches and a first attenuator that is connected between the plurality of resistor branches.

5. 发明申请

US20170331432A1 AMPLIFYING CIRCUIT 有权
公开(公告)号：US20170331432A1
公开(公告)日：2017-11-16
申请号：US15657618
申请日：2017-07-24
申请人： SHENZHEN GOODIX TECHNOLOGY CO., LTD.
发明人： Mengwen ZHANG
IPC分类号： H03F1/02 , H03F3/187 , H03F1/30 , H03F1/32
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： An amplifying circuit includes 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 can eliminate the baseline signal, convert the common-mode voltage and quickly establish the common-mode negative feedback.

6. 发明申请

US20170302239A1 FEEDBACK CIRCUIT FOR POWER AMPLIFIER 审中-公开
公开(公告)号：US20170302239A1
公开(公告)日：2017-10-19
申请号：US15465503
申请日：2017-03-21
申请人： SKYWORKS SOLUTIONS, INC.
发明人： Andy Cheng Pang WU , Yu-Jui LIN , Peter Phu TRAN
IPC分类号： H03G1/00 , H03F3/195 , H03F1/02 , H03F3/24 , H03F1/34 , H04B1/40
CPC分类号： H03G1/0088 , H03F1/0222 , H03F1/0261 , H03F1/342 , H03F1/56 , H03F3/19 , H03F3/195 , H03F3/211 , H03F3/245 , H03F3/68 , H03F2200/111 , H03F2200/121 , H03F2200/129 , H03F2200/144 , H03F2200/156 , H03F2200/18 , H03F2200/222 , H03F2200/27 , H03F2200/387 , H03F2200/411 , H03F2200/451 , H03G3/3042 , H04B1/40
摘要： Feedback circuit for power amplifier. In some embodiments, a radio-frequency amplifier can include a bipolar junction transistor configured to amplify a signal, and having an input and an output. The radio-frequency amplifier can further include a feedback circuit implemented between the output and input of the bipolar junction transistor. The feedback circuit can include a parallel assembly of a field-effect transistor and a resistive element such that the resistive element is bypassed when the field-effect transistor is ON and an overall resistance of the feedback circuit includes the resistive element when the field-effect transistor is OFF. Such a feedback circuit can be configured to be capable of providing a plurality of resistance values between the output and input of the bipolar junction transistor to facilitate different gains of the bipolar junction transistor.

7. 发明授权

US09634626B2 Instrumentation amplifier 有权
公开(公告)号：US09634626B2
公开(公告)日：2017-04-25
申请号：US14709057
申请日：2015-05-11
申请人： Vango Technologies, Inc.
发明人： Shupeng Zhong
IPC分类号： H03F1/02 , H03F3/45 , H03F3/387
CPC分类号： H03F3/387 , H03F3/45071 , H03F3/45475 , H03F2200/156 , H03F2200/252 , H03F2200/261 , H03F2200/271 , H03F2203/45514 , H03F2203/45551
摘要： An instrumentation amplifier includes: a capacitive feedback closed-loop amplifier, an input capacitor charging module, a feedback capacitor discharging module, a noise separation module and a logic controller. The capacitive feedback closed-loop amplifier includes a fully differential operational amplifier, a first input capacitor, a second input capacitor, a first feedback capacitor and a second feedback capacitor. The input capacitor charging module is configured to charge the first input capacitor and the second input capacitor periodically. The feedback capacitor discharging module is configured to discharge the first feedback capacitor and the second feedback capacitor periodically. The noise separation module is configured to separate a noise from a signal using a chopping modulation technology. The logic controller is connected to the input capacitor charging module, the feedback capacitor discharging module and the noise separation module to control the modules to operate.

8. 发明授权

US09634617B2 Multistage amplifier circuit with improved settling time 有权
公开(公告)号：US09634617B2
公开(公告)日：2017-04-25
申请号：US14790592
申请日：2015-07-02
申请人： Texas Instruments Incorporated
发明人： Vadim V. Ivanov , Vaibhav Kumar , Munaf H. Shaik
IPC分类号： H03F1/32 , H03F1/08 , H03F1/14 , H03F3/45 , H03F3/72
CPC分类号： H03F3/68 , H03F1/086 , H03F1/14 , H03F1/3211 , H03F1/3223 , H03F3/211 , H03F3/45183 , H03F3/45475 , H03F3/45959 , H03F3/45986 , H03F3/72 , H03F2200/135 , H03F2200/156 , H03F2200/405 , H03F2200/459 , H03F2200/78 , H03F2201/3218 , H03F2203/45026 , H03F2203/45366 , H03F2203/45424 , H03F2203/45434 , H03F2203/45528 , H03F2203/45544 , H03F2203/45548 , H03F2203/45594 , H03F2203/45614 , H03F2203/45616 , H03F2203/45636 , H03F2203/45674 , H03F2203/45724 , H03F2203/45726 , H03F2203/7206
摘要： Described examples include multistage amplifier circuits having first and second forward circuits, a comparator or sensor circuit coupled to sense a signal in the second forward circuit to identify nonlinear operation or slewing conditions in the multistage amplifier circuit, and one or more sample hold circuits operative according to a sensor circuit output signal to selectively maintain the amplitude of an amplifier input signal in the second forward circuit and/or in a feedback circuit in response to the sensor circuit output signal indicating nonlinear operation or slewing conditions in the multistage amplifier circuit. Certain examples further include a clamping circuit operative to selectively maintain a voltage at a terminal of a Miller compensation capacitance responsive to the comparator output signal indicating nonlinear operation or slewing conditions.

9. 发明申请

US20160079941A1 INSTRUMENTATION AMPLIFIER 有权
标题翻译：仪表放大器
公开(公告)号：US20160079941A1
公开(公告)日：2016-03-17
申请号：US14709057
申请日：2015-05-11
申请人： Vango Technologies, Inc.
发明人： Shupeng ZHONG
IPC分类号： H03F3/387 , H03F3/45
CPC分类号： H03F3/387 , H03F3/45071 , H03F3/45475 , H03F2200/156 , H03F2200/252 , H03F2200/261 , H03F2200/271 , H03F2203/45514 , H03F2203/45551
摘要： An instrumentation amplifier includes: a capacitive feedback closed-loop amplifier, an input capacitor charging module, a feedback capacitor discharging module, a noise separation module and a logic controller. The capacitive feedback closed-loop amplifier includes a fully differential operational amplifier, a first input capacitor, a second input capacitor, a first feedback capacitor and a second feedback capacitor. The input capacitor charging module is configured to charge the first input capacitor and the second input capacitor periodically. The feedback capacitor discharging module is configured to discharge the first feedback capacitor and the second feedback capacitor periodically. The noise separation module is configured to separate a noise from a signal using a chopping modulation technology. The logic controller is connected to the input capacitor charging module, the feedback capacitor discharging module and the noise separation module to control the modules to operate.
摘要翻译：仪表放大器包括：电容反馈闭环放大器，输入电容充电模块，反馈电容放电模块，噪声分离模块和逻辑控制器。电容反馈闭环放大器包括全差分运算放大器，第一输入电容器，第二输入电容器，第一反馈电容器和第二反馈电容器。输入电容器充电模块被配置为周期性地对第一输入电容器和第二输入电容器充电。反馈电容器放电模块被配置为周期性地对第一反馈电容器和第二反馈电容器进行放电。噪声分离模块被配置为使用斩波调制技术将噪声与信号分离。逻辑控制器连接到输入电容充电模块，反馈电容放电模块和噪声分离模块，以控制模块的工作。

10. 发明申请

US20160020736A1 REFERENCE AMPLIFIER COUPLED TO A VOLTAGE DIVIDER CIRCUIT TO PROVIDE FEEDBACK FOR AN AMPLIFIER 有权
标题翻译：参考放大器耦合到电压分路器电路，为放大器提供反馈
公开(公告)号：US20160020736A1
公开(公告)日：2016-01-21
申请号：US14334442
申请日：2014-07-17
申请人： QUALCOMM Incorporated
发明人： Vijayakumar Dhanasekaran
IPC分类号： H03F3/183 , H03F3/45 , H03F3/21
CPC分类号： H03F3/183 , H03F3/187 , H03F3/211 , H03F3/45071 , H03F3/45475 , H03F3/45941 , H03F2200/03 , H03F2200/156 , H03F2203/45116 , H03F2203/45512 , H03F2203/45521 , H03F2203/45528
摘要： An apparatus includes a voltage divider circuit and a reference amplifier coupled to the voltage divider circuit. The reference amplifier is configured to provide a feedback voltage to input circuitry of an amplifier.
摘要翻译：一种装置包括分压器电路和耦合到分压器电路的参考放大器。参考放大器被配置为向放大器的输入电路提供反馈电压。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式