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5251 Views 2 Replies Latest reply: May 6, 2014 3:31 PM by JamLee RSS
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May 6, 2014 11:04 AM

Suggestion regarding RF amplifier

Hi friends,

I  need some advice in  purchasing off the shelf  RF amplifier for my application. I have  to amplify  a 25 MHz,( ~0.5 to 1Vpp)  sinusoidal signal to ~12 Vpp in my experiment.  This is needed to drive a electro-optic phase modulator operating at 25 MHz.

I  have no background in electrical engineering, and do not quite  know  what would be the right kind of  RF amplifiers for my application?


I thought I could  use  the Minicircuit's   ZFL-500LN low noise amplifier. It is rated for ~24 dB gain.   But  then I found  that max input it can amplify is only  50 mV pp. Beyond that the output was saturating.  The max undistorted signal that I got from ZFL-500LN  is  about 1.5Vpp.  This is  a roughly factor  of 10 less than what I was hoping  for.   I would greatly appreciate if   you could suggest some alternative.  Many thanks in advance.


I look forward to your reply.




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