What is the minimum input power level required for the RFSA3713, QPC6713 RF attenuator to achieve accurate attenuation at its maximum attenuation setting? For example, if I apply -100 dBm input power, will the output show a signal attenuated to -131 dBm accurately? If not, where can I find the minimum input level specifications for this IC?
Hello. It will depend on the noise present (will the noise be higher than the -100 dBm signal?). The attenuator should always attenuate signal at its attenuation setting unless the RF input exceeds the absolute max. RF input rating.
Hi,
Thank you for answer.
I think the external noise level outside the IC is less than -100 dBm. But there is one point I am not sure about. Does the internal noise of the IC and the input-output coupler level prevent attenuation at very low levels?
I don’t believe it would, but I have never dealt with this situation. Best thing to do would be to sample an eval board (EVB) and run special tests in your operating environment. Go to our website “How to Buy” link along the top to determine our Distributors (Authorized Channel Partner) or sales reps (Buy Direct from Qorvo Sales).