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公开(公告)号：US20230059991A1
公开(公告)日：2023-02-23
申请号：US17760236
申请日：2021-03-12
发明人： Siwen Liang , Junhua Shen , Marlon Consuelo Maramba , Alberto Marinas , Sivanendra Selvanayagam
IPC分类号： H03L7/081 , G04F10/00 , G01S7/4865
摘要： Provided herein are delay locked loops (DLLs) with calibration for external delay. In certain embodiments, a timing alignment system includes a DLL including a detector that generates a delay control signal based on comparing a reference clock signal to a feedback clock signal, and a controllable delay line configured to generate the feedback clock signal by delaying the reference clock signal based on the delay control signal. The timing alignment system further includes a delay compensation circuit that provides an adjustment to the controllable delay line to compensate for a delay of the feedback clock signal in reaching the detector.
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公开(公告)号：US20210351566A1
公开(公告)日：2021-11-11
申请号：US16869154
申请日：2020-05-07
IPC分类号： H01S5/042 , H03K17/687
摘要： The present disclosure relates to a driver circuit for a light source and related methods of operating the driver circuit. In particular, it relates to a driver circuit designed to reduce the effect of parasitic inductances on the rise time/fall time of excitation current pulses applied to the light source using the driver circuit.
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公开(公告)号：US11936389B2
公开(公告)日：2024-03-19
申请号：US17760236
申请日：2021-03-12
发明人： Siwen Liang , Junhua Shen , Marlon Consuelo Maramba , Alberto Marinas , Sivanendra Selvanayagam
IPC分类号： H03L7/081 , G01S7/4865 , G04F10/00
CPC分类号： H03L7/0812 , G01S7/4865 , G04F10/005
摘要： Provided herein are delay locked loops (DLLs) with calibration for external delay. In certain embodiments, a timing alignment system includes a DLL including a detector that generates a delay control signal based on comparing a reference clock signal to a feedback clock signal, and a controllable delay line configured to generate the feedback clock signal by delaying the reference clock signal based on the delay control signal. The timing alignment system further includes a delay compensation circuit that provides an adjustment to the controllable delay line to compensate for a delay of the feedback clock signal in reaching the detector.
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公开(公告)号：US20230117191A1
公开(公告)日：2023-04-20
申请号：US17906238
申请日：2021-03-12
发明人： Erik D. Barnes , Junhua Shen , Alberto Marinas , Jonathan Ephraim David Hurwitz , Sivanendra Selvanayagam
摘要： Monitoring temperature of a laser diode and adjusting usage of the laser diode based on the monitoring information. The method of monitoring includes using a laser driver circuit to drive the laser diode to deliver multiple test current stimuli at different times related to the laser driver issuing one or a burst of illumination pulses. A differential measurement can be made between at least two of the test current stimuli. The differential measurement can be used to determine an indication of the heating or health of the laser diode in the system or of the laser system as a whole.
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