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公开(公告)号：US10763810B2
公开(公告)日：2020-09-01
申请号：US16810651
申请日：2020-03-05
申请人： INPHI CORPORATION
摘要： The present invention is directed to electrical circuits and techniques thereof. In various embodiments, the present invention provides a variable gain amplifier architecture that includes a continuous-time linear equalizer (CTLE) section and a variable gain amplifier (VGA) section. The CTLE section provides both a pair of equalized data signals and a common mode voltage. A DAC generates a control signal based on a control code. The VGA section amplifies the pair of equalized data signals by an amplification factor using a transistor whose resistance value is based on both the common mode voltage and the control signal. There are other embodiments as well.
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公开(公告)号：US10763809B2
公开(公告)日：2020-09-01
申请号：US16233604
申请日：2018-12-27
申请人： NXP B.V.
摘要： A voltage detection circuit including an input voltage stage configured to scale down an input voltage to produce a scaled down voltage, a gain loss stage configured to receive and adjust the scaled down voltage based on a determined gain or loss to be applied to the scaled down voltage, and a comparison circuit configured to determine if the input voltage is over or under a desired voltage value.
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33.发明申请公开(公告)号：US20200266779A1
公开(公告)日：2020-08-20
申请号：US16560700
申请日：2019-09-04
申请人： SK hynix Inc.
发明人： Ji Hyo KANG
摘要： An amplifier includes an amplification circuit, an equalization circuit, an output circuit, a first gain adjusting circuit, and a second gain adjusting circuit. The amplification circuit changes voltage levels of first and second amplification nodes based on first and second input signals. The equalization circuit changes the voltage levels of the first and second amplification nodes. The output circuit generates an output signal based on the voltage levels of the first and second amplification nodes. The first gain adjusting circuit changes voltage levels applied to the first and second amplification nodes based on the voltage levels of the first and second amplification nodes and a first gain control signal. The second gain adjusting circuit changes a voltage level of the output signal based on a second gain control signal.
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公开(公告)号：US10742184B2
公开(公告)日：2020-08-11
申请号：US16129972
申请日：2018-09-13
发明人： Dimitri Danyuk , Todd A. Eichenbaum
摘要： An instrumentation amplifier configured for providing high common mode rejection is described and includes an input differential stage configured to receive a differential input voltage and a folded cascode amplifying stage configured to receive output current mode signals provided from the input differential pair. A plurality of feedback networks is provided to improve the input stage. The amplifier may operate to provide an enhanced common mode rejection ratio of a single gain block in the instrumentation amplifier. In some examples, the circuitry may have a differential folded cascode amplifying stage which permits high precision and low distortion of amplified signals without degrading the common mode rejection ratio.
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公开(公告)号：US10727791B2
公开(公告)日：2020-07-28
申请号：US16057216
申请日：2018-08-07
发明人： Mengwen Zhang
IPC分类号： H03F3/08 , H03F1/42 , H03K19/14 , H03G1/00 , H03G3/30 , G01B15/00 , H03G3/00 , H03F3/70 , H03F3/72 , H03F3/00 , H03F1/02 , H03K3/012 , G05F1/565 , H03G5/12
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.
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公开(公告)号：US20200212860A1
公开(公告)日：2020-07-02
申请号：US16233604
申请日：2018-12-27
申请人： NXP B.V.
摘要： A voltage detection circuit including an input voltage stage configured to scale down an input voltage to produce a scaled down voltage, a gain loss stage configured to receive and adjust the scaled down voltage based on a determined gain or loss to be applied to the scaled down voltage, and a comparison circuit configured to determine if the input voltage is over or under a desired voltage value.
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公开(公告)号：US20200153400A1
公开(公告)日：2020-05-14
申请号：US16677586
申请日：2019-11-07
申请人： Roland Corporation
摘要： A distortion imparting device capable of obtaining a natural distortion effect even when output is decreased is provided. The distortion imparting device includes a first amplification part which attenuates an input audio signal on the basis of an attenuation factor set by a user and amplifies the attenuated audio signal, a second amplification part serially connected to the first amplification part, and a limiting part which is connected between an output terminal of the first amplification part and an input terminal of the second amplification part and limits an input voltage of the second amplification part to a predetermined clip voltage, wherein the limiting part determines the clip voltage on the basis of the attenuation factor.
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公开(公告)号：US10651810B1
公开(公告)日：2020-05-12
申请号：US16513376
申请日：2019-07-16
申请人： Ronald Quan
发明人： Ronald Quan
IPC分类号： H03K3/33 , H03K17/16 , H03K19/00 , H01L27/088 , H03K17/042 , H03G1/00 , H03G3/30 , H03K4/06 , H01L29/808 , H01P1/22
摘要： A number of field effect transistor circuits include voltage controlled attenuators or voltage controlled processing circuits. Example circuits include modulators, lower distortion variable voltage controlled resistors, sine wave to triangle wave converters, and or servo controlled biasing circuits.
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公开(公告)号：US20200112286A1
公开(公告)日：2020-04-09
申请号：US16710239
申请日：2019-12-11
发明人： Sudipto Chakraborty
摘要： A variable-gain power amplifying technique includes generating, with a network of one or more reactive components included in an oscillator, a first oscillating signal, and outputting, via one or more taps included in the network of the reactive components, a second oscillating signal. The second oscillating signal has a magnitude that is proportional to and less than the first oscillating signal. The power amplifying technique further includes selecting one of the first and second oscillating signals to use for generating a power-amplified output signal, and amplifying the selected one of the first and second oscillating signals to generate the power-amplified output signal.
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公开(公告)号：US10587187B2
公开(公告)日：2020-03-10
申请号：US15597900
申请日：2017-05-17
发明人： John P. Lesso , John L. Pennock , Peter J. Frith
摘要： A signal amplifying circuit and associated methods and apparatuses, the circuit comprising: a signal path extending from an input terminal to an output terminal, a gain controller arranged to control the gain applied along the signal path in response to a control signal; an output stage within the signal path for generating the output signal, the output stage having a gain that is substantially independent of its supply voltage, and a variable voltage power supply comprising a charge pump for providing positive and negative output voltages, the charge pump comprising a network of switches that is operable in a number of different states and a controller for operating the switches in a sequence of the states so as to generate positive and negative output voltages together spanning a voltage approximately equal to the input voltage.
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