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Recent content by iamalearner

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    Driving LED at 60 MHz

    Hi The LED used is yallow/amber (590 nm) wavelength. What is VCSEL? - jeet
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    Ideas for driving LED at 60 MHz

    Re: Drive LED at 60 MHz The reason we were not able to use laser diodes was that they were not readily available in yellow/amber (594 nm) wavelength range. I am thinking of evaluating ADN2871 (laser driver) for driving LED at 60 MHz. Thanks! - jeet
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    Ideas for driving LED at 60 MHz

    Re: Drive LED at 60 MHz Thanks! I saw that circuit in an appnote from Agilent. We are currently using a slight variation of this circuit. However its consuming around 60-70 mA. I will try to optimize it for current consumption. I was wondering if there is any other way than this. Added after...
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    Driving LED at 60 MHz

    Hi I need to design an LED driver circuit at a frequency of 60 MHz. The LED output light modulated at 60 MHz will be used to excite a sensor and then the light reflected from the sensor will be converted into current for further processing. Any ideas for driving LED at 60 MHz? I want to keep...
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    Ideas for driving LED at 60 MHz

    Hi I need to design an LED driver circuit at a frequency of 60 MHz. The LED output light modulated at 60 MHz will be used to excite a sensor and then the light reflected from the sensor will be converted into current for further processing. Any ideas for driving LED at 60 MHz? I would like to...
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    How to Calculate Noise Figure using spectre RF

    differential lna spectre Hi all, While finding the noise figure of a differential LNA using SPECTRE RF, should i use "sp" analysis or "pnoise" analysis ?? whats the difference?? Thanks
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    How to Calculate Noise Figure using spectre RF

    how to calculate rf Hi thanks for the reply, I seek help but for that i need to specify the problem in detail. Here is the detail .. I have a differential LNA with output pins as out+ and out-. At the outputs I have stuck in two "psin" ports, one at each differential output. At the input...
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    How to Calculate Noise Figure using spectre RF

    noise figure calculation Hi while doing sp analysis, In the coosing analysis form for "sp" analysis I select start-stop for Sweep Range and the range i enter is : Start : 800 M Stop: 5 G But when i simulate i get the following error: Error found by spectre at freq = 800 MHz during SP...
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    How to Calculate Noise Figure using spectre RF

    how to calculate noise figure Hi Guys I have designed a differential LNA. I get a good voltage gain of 27dB. The Problem is that i donot know how to calculate the Noise Figure of the design using SPECRE RF!!!! I know how to do S-paramter simulation in SPECTRE RF but i donot know how to...
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