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公开(公告)号：US09998077B2
公开(公告)日：2018-06-12
申请号：US15188364
申请日：2016-06-21
Applicant: QUALCOMM Incorporated
Inventor： Arash Mehrabi , Zongyu Dong , Vijayakumar Dhanasekaran , Dongyang Tang , Chien-Chung Yang
CPC classification number: H03F1/34 , H03F1/0272 , H03F1/3211 , H03F3/183 , H03F3/21 , H03F3/45475 , H03F2200/153 , H03F2200/21 , H03F2203/45136 , H03F2203/45151 , H03F2203/45522 , H03F2203/45528 , H03F2203/45562 , H03F2203/45594
Abstract: An apparatus includes an amplifier having a first input and a second input. A first feedback resistor is coupled to the first input and has a first body terminal coupled to a first bias terminal. A second feedback resistor is coupled to the second input and has a second body terminal coupled to a second bias terminal.
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公开(公告)号：US20180269839A1
公开(公告)日：2018-09-20
申请号：US15986527
申请日：2018-05-22
Applicant: QUALCOMM Incorporated
Inventor： Arash Mehrabi , Zongyu Dong , Vijayakumar Dhanasekaran , Dongyang Tang , Chien-Chung Yang
CPC classification number: H03F1/34 , H03F1/0272 , H03F1/3211 , H03F3/183 , H03F3/21 , H03F3/45475 , H03F2200/153 , H03F2200/21 , H03F2203/45136 , H03F2203/45151 , H03F2203/45522 , H03F2203/45528 , H03F2203/45562 , H03F2203/45594
Abstract: An apparatus includes a reference voltage circuit having a bandgap input and a reference voltage output. The apparatus also includes a digital-to-analog converter (DAC) coupled to the reference voltage output and having a digital signal input. The apparatus includes an amplifier having a first input coupled to an output of the DAC. The first input is coupled to an output of the amplifier via a feedback resistor. The apparatus includes a resistor coupled to the reference voltage output and having a body terminal coupled to the output of the amplifier.
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Patent Agency Ranking
3.发明授权公开(公告)号：US10673449B1
公开(公告)日：2020-06-02
申请号：US16398962
申请日：2019-04-30
Applicant: QUALCOMM Incorporated
Inventor： Chien-Chung Yang , Dongyang Tang , Vijayakumar Dhanasekaran
IPC: H03M1/06
Abstract: A digital-to-analog converter has both a plurality of DAC stages and a plurality of dummy stages. Each DAC stage causes a glitch or disturbance to a pair of reference voltages when the DAC stage changes its switching state. Each dummy stage also causes a similar glitch or disturbance to the pair of reference voltages when the dummy stage changes its switching state. The dummy stages are controlled to change their switching state responsive to how many DAC stages change their switching state such that a total glitch induced onto the reference voltages remains substantially constant across a succession of digital words converted by the digital-to-analog converter into an analog output signal.
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公开(公告)号：US10447212B2
公开(公告)日：2019-10-15
申请号：US15986527
申请日：2018-05-22
Applicant: QUALCOMM Incorporated
Inventor： Arash Mehrabi , Zongyu Dong , Vijayakumar Dhanasekaran , Dongyang Tang , Chien-Chung Yang
Abstract: An apparatus includes a reference voltage circuit having a bandgap input and a reference voltage output. The apparatus also includes a digital-to-analog converter (DAC) coupled to the reference voltage output and having a digital signal input. The apparatus includes an amplifier having a first input coupled to an output of the DAC. The first input is coupled to an output of the amplifier via a feedback resistor. The apparatus includes a resistor coupled to the reference voltage output and having a body terminal coupled to the output of the amplifier.
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公开(公告)号：US20170187336A1
公开(公告)日：2017-06-29
申请号：US15188364
申请日：2016-06-21
Applicant: QUALCOMM Incorporated
Inventor： Arash Mehrabi , Zongyu Dong , Vijayakumar Dhanasekaran , Dongyang Tang , Chien-Chung Yang
CPC classification number: H03F1/34 , H03F1/0272 , H03F1/3211 , H03F3/183 , H03F3/21 , H03F3/45475 , H03F2200/153 , H03F2200/21 , H03F2203/45136 , H03F2203/45151 , H03F2203/45522 , H03F2203/45528 , H03F2203/45562 , H03F2203/45594
Abstract: An apparatus includes an amplifier having a first input and a second input. A first feedback resistor is coupled to the first input and has a first body terminal coupled to a first bias terminal. A second feedback resistor is coupled to the second input and has a second body terminal coupled to a second bias terminal.
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公开(公告)号：US09641128B2
公开(公告)日：2017-05-02
申请号：US14812867
申请日：2015-07-29
Applicant: QUALCOMM Incorporated
Inventor： Chien-Chung Yang , Vijayakumar Dhanasekaran
CPC classification number: H03F1/0205 , H03F1/0277 , H03F1/305 , H03F1/3205 , H03F3/185 , H03F3/187 , H03F3/211 , H03F3/213 , H03F3/2171 , H03F3/45475 , H03F3/505 , H03F3/72 , H03F2200/03 , H03F2200/129 , H03F2200/151 , H03F2200/156 , H03F2200/159 , H03F2200/18 , H03F2200/294 , H03F2200/411 , H03F2200/414 , H03F2200/417 , H03F2200/69 , H03F2203/21106 , H03F2203/45114 , H03F2203/45138 , H03F2203/45151 , H03F2203/45224 , H03F2203/45521 , H03F2203/45528 , H03F2203/45536 , H03F2203/45594 , H03F2203/45601 , H03F2203/45694 , H03F2203/45698 , H03F2203/45702 , H03F2203/45718 , H03F2203/7221 , H03F2203/7236
Abstract: An apparatus includes an input amplifier stage and a switch that has a first terminal at a virtual ground input of the input amplifier stage.
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公开(公告)号：US20170033744A1
公开(公告)日：2017-02-02
申请号：US14812867
申请日：2015-07-29
Applicant: QUALCOMM Incorporated
Inventor： Chien-Chung Yang , Vijayakumar Dhanasekaran
CPC classification number: H03F1/0205 , H03F1/0277 , H03F1/305 , H03F1/3205 , H03F3/185 , H03F3/187 , H03F3/211 , H03F3/213 , H03F3/2171 , H03F3/45475 , H03F3/505 , H03F3/72 , H03F2200/03 , H03F2200/129 , H03F2200/151 , H03F2200/156 , H03F2200/159 , H03F2200/18 , H03F2200/294 , H03F2200/411 , H03F2200/414 , H03F2200/417 , H03F2200/69 , H03F2203/21106 , H03F2203/45114 , H03F2203/45138 , H03F2203/45151 , H03F2203/45224 , H03F2203/45521 , H03F2203/45528 , H03F2203/45536 , H03F2203/45594 , H03F2203/45601 , H03F2203/45694 , H03F2203/45698 , H03F2203/45702 , H03F2203/45718 , H03F2203/7221 , H03F2203/7236
Abstract: An apparatus includes an input amplifier stage and a switch that has a first terminal at a virtual ground input of the input amplifier stage.
Abstract translation: 一种装置包括输入放大器级和在输入放大级的虚拟接地输入端具有第一端的开关。
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