Receiver Gain Control


We are working now on the receiver path automatic gain control (AGC) for Myriad RF board. The gain control algorithm has to track the input signal power level and adjust the gain stages accordingly. The receiver path has three gain stages (VGA1, VGA2 and LNA gain mode). We need to know the sequence of gain adjustment in the receive path. For example, do we have to adjust VGA2 first then VGA1 and LNA gain, or it has to be in other sequence.


The gain table for the receiver path is shown in a FAQ document:

See QA 5.18. I hope that helps.



Thanks for link, I will have a look to it.


Hello, maybe someone can suggest how can the VGA1 code be converted into dB’s?
Thank you.