-
公开(公告)号：US20200096711A1
公开(公告)日：2020-03-26
申请号：US16699490
申请日：2019-11-29
发明人： Vasilis Papanikolaou , Marek Tlalka , Atul Gupta
摘要： A transimpedance amplifier and photodiode that has a bias voltage node established at a bias voltage and a ground node/plane that connects, over a short distance as compared to the prior art, to a photodiode and a transimpedance amplifier. The photodiode is in a substrate and configured to receive and convert an optical signal to an electrical current. The photodiode has an anode terminal and a cathode terminal which is connected to the bias voltage node. One or more capacitors in or on the substrate and connected between the bias node and the ground node. The transimpedance amplifier has an input connected to the anode terminal of the photodiode and an output that presents a voltage representing the optical signal to an output path. The transimpedance amplifier and the photodiode are both electrically connected in a flip chip configuration and the ground plane creates a coplanar waveguide.
-
公开(公告)号：US20200067455A1
公开(公告)日：2020-02-27
申请号：US16110613
申请日：2018-08-23
申请人： Semtech Corporation
IPC分类号： H03F1/02 , H03F3/08 , H04B10/079
摘要： A loss of signal circuit has a multiplexer and a photodiode coupled to a first input of the multiplexer. A reference signal generator is coupled to a second input of the multiplexer. An amplifier is coupled to an output of the multiplexer. A demultiplexer includes an input of the demultiplexer coupled to an output of the amplifier. A first capacitor is coupled to a first output of the demultiplexer. A second capacitor is coupled to a second output of the demultiplexer. A comparator has a first input coupled to the first output of the demultiplexer and a second input of the comparator is coupled to the second output of the demultiplexer.
-
公开(公告)号：US20200044098A1
公开(公告)日：2020-02-06
申请号：US16583674
申请日：2019-09-26
申请人： DENSO CORPORATION
发明人： Kenta AZUMA , Teiyu KIMURA , Noriyuki OZAKI , Shinji KASHIWADA , Takehiro HATA , Isamu TAKAI , Hiroyuki MATSUBARA
摘要： A light detector is provided to include a detection module, and a monitoring SPAD. The detection module includes an SPAD that is an avalanche photodiode operable in Geiger mode; the detection module is configured to perform light detection by applying, to the SPAD, a reverse bias voltage in a reverse direction. The monitoring SPAD has characteristics identical to characteristics of the SPAD in the detection module. The reverse bias voltage is generated to be applied to the SPAD in the detection module based on (i) a reference breakdown voltage set from a breakdown voltage generated across the monitoring SPAD in Geiger mode and (ii) a predetermined excess voltage.
-
公开(公告)号：US10554178B2
公开(公告)日：2020-02-04
申请号：US15704496
申请日：2017-09-14
发明人： Carlo Fiorini , Luca Bombelli
摘要： In a preamplifier (amplifier) for the radiation detector, an interconnection layer connected to the bonding pad forms one electrode of a feedback capacitor. Since there is no wiring for connecting the bonding pad and capacitor, a parasitic capacitance caused by the wiring will not be generated. Moreover, the capacitor is arranged below the bonding pad with a conductive layer serving as the other electrode, so that the feedback capacitance of the capacitor is included in the parasitic capacitance between the interconnection layer and the substrate. Compared to the conventional case, an amount of capacitance corresponding to the parasitic capacitance caused by wiring and the feedback capacitance for the capacitor is reduced from the input capacitance. Thus, the input capacitance for the amplifying circuit is reduced.
-
公开(公告)号：US20200036344A1
公开(公告)日：2020-01-30
申请号：US15735553
申请日：2016-07-01
发明人： Shinsuke Nakano , Hiroaki Katsurai , Masafumi Nogawa , Shunji Kimura , Masatoshi Tobayashi , Shigehiro Kurita , Masahiro Endo
摘要： An amplifier applied to TIA is provided to suppress the noise caused by a current source. An amplifier constituting a transimpedance amplifier includes an inductor element inserted between a current source connected to an input terminal of an amplification stage and a power source voltage line. The current source includes a first transistor in which a base terminal is connected to a current control bias and a collector terminal is connected to the input terminal. The inductor element is inserted between the emitter terminal of the first transistor and the power source voltage line.
-
公开(公告)号：US20200033191A1
公开(公告)日：2020-01-30
申请号：US16513749
申请日：2019-07-17
发明人： Cheng-Hsiung Chen , Yung-Yu Huang , Ming-Hui Lin , He-Yi Hsieh , Hsi-Pin Li
摘要： A spectrometer engine and an adjustment method thereof are provided. The spectrometer engine includes a connector, a light sensor, a variable gain amplifier, a variable reference voltage generation circuit, an analog-to-digital converter and a control circuit. The light sensor senses a light to be measured coming from an object to be measured to generate a sensing signal. The variable gain amplifier amplifies the sensing signal according to a first setting parameter to generate an amplified signal. The variable reference voltage generation circuit provides a reference voltage according to a second setting parameter. The analog-to-digital converter converts the amplified signal to a digital signal according to the reference voltage. The control circuit reads the digital signal and adjusts at least one of the first to third setting parameters according to the digital signal for the spectrometer engine to measure the object to be measured again to generate another digital signal.
-
37.发明申请公开(公告)号：US20200014354A1
公开(公告)日：2020-01-09
申请号：US16027770
申请日：2018-07-05
申请人： Ciena Corporation
发明人： Tom Luk , Michael Vitic , Ron Hartman
摘要： An amplifier circuit includes: an amplifier configured to receive at least one input signal and generate an output voltage in response to the at least one input signal and a gain control voltage; a voltage detector configured to generate a detector voltage based on the output voltage; a gain control summation circuit configured to generate an error signal by subtracting the detector voltage from a reference voltage; a loop filter configured to generate the gain control voltage based on the error signal and adjust the loop bandwidth in response to a loop filter adjust signal; and an analog automatic gain control bandwidth controller configured to monitor the detector voltage and the gain control voltage, to provide the reference voltage and the loop filter adjust signal, and to control a loop bandwidth of the output signal.
-
公开(公告)号：US10483922B2
公开(公告)日：2019-11-19
申请号：US15893013
申请日：2018-02-09
IPC分类号： H03F1/30 , G01J1/44 , H03F3/45 , H03F1/26 , H03F3/08 , H01L31/02 , H01L27/144 , H03K17/687
摘要： A photoelectric conversion device is provided. The device comprises a light receiving element, first and second transimpedance amplifiers configured to receive a signal of the light receiving element and output a voltage, a differential operation amplifier configured to perform a differential amplification for outputs of the first and second transimpedance amplifiers and a switching unit. The switching unit includes an output switching unit configured to switch connections between a first state where the light receiving element and the first transimpedance amplifier are connected and a second state where the light receiving element and the second transimpedance amplifier are connected, and a capacitance adjusting unit connected to an input terminal of each of the first and second transimpedance amplifiers and configured to adjust a capacitance value of the first and transimpedance amplifier and/or a capacitance value of the second transimpedance amplifier.
-
公开(公告)号：US10439567B2
公开(公告)日：2019-10-08
申请号：US16159687
申请日：2018-10-14
申请人： Onkyo Corporation
发明人： Atsunori Kishimoto
摘要： A switching power supply comprising: a control circuit which is provided at a primary side and controls a switching element based on a value which is fed back from a secondary side; a transformer; a secondary side rectifier element which rectifies voltage which is supplied from the transformer; and a secondary side smooth element which smoothes voltage which is rectified by the rectifier element, wherein voltage which is smoothed by the smooth element is supplied to an amplifier and voltage which is smoothed by the smooth element is fed back to the control circuit, further comprising: a diode which is connected between the smooth element and the amplifier in series.
-
40.发明申请公开(公告)号：US20190305731A1
公开(公告)日：2019-10-03
申请号：US16429952
申请日：2019-06-03
申请人： Stefan Barabas , Joseph Balardeta , Simon Pang , Scott Denton
发明人： Stefan Barabas , Joseph Balardeta , Simon Pang , Scott Denton
摘要： Methods and systems for process and temperature compensation in a transimpedance amplifier using a dual replica and configurable impedances is disclosed and may include a transimpedance amplifier (TIA) circuit comprising a first TIA, a second TIA, a third TIA, and a control loop. The first TIA comprises a fixed feedback resistance and the second and third TIAs each comprise a configurable feedback impedance. The system may comprise a gain stage with inputs coupled to outputs of the first and second TIAs and with an output coupled to the configurable feedback impedance of the second and third TIAs. The circuit may be operable to configure a gain level of the first TIA based on the fixed feedback resistance and a reference current applied at an input to the first TIA, and configure a gain level of the second and third TIAs based on a control voltage generated by the gain stage.
-
-
-
-
-
-
-
-
-
搜索结果
1719 条记录 (耗时 0.036 秒)
