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AD9371 noise figure vs RX gain

Question asked by AVT1 on Jul 19, 2016
Latest reply on Jul 21, 2016 by kdrerup@vanteon

Where can I find information for the AD9371, on noise figure vs RX gain?

 

I see see this information for the AD9361 but not the AD9371.

 

I’m looking at setting up the RF chain prior to the AD9371. I see its maximum recommended input power is -14dBm. Since we have to work up to a -22 dBm input, that means I can only have 6dB of RF gain. This ends up causing a degradation in the overall noise figure due to the AD9371’s 12dB noise figure. How does the noise figure change on the AD9371 as you drop the receiver’s gain. Is it a dB for dB change?

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