can you suggest low noise amplifier which accepts of input frequency 50KHz, -120dB siganl level and signal gain should be 30dB.
Low noise amplifier always can not support low frequency just as 50KHz. In this frequency band, you can use OP amplifier. But you should know that the noise figure of OP amplifier is not good,always more than 10dB.
if you use the Gain block, its noise figure may be less than 5dB. But how to match this amplifiers is a trouble.
Thank you your reply...
Suggest any gain block parts to support low frequency and low input levels.
You can see the amplifier of TRIQUINT, just as NBB-400. Or the amplifier of MINI-CIRCUITS,just as LEE-19+
But you should notice that the match of the amplifier is very important. It's decide the S parameters of the amplifier especially in low frequency.
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