Configuration for External LNA

The default peak overload wait time is fine for all applications until you are using an external LNA with bypass(low gain)mode.

Yes if you add the LNA gain in the gain table then it will impact your AGC as in that case the total gain will change. There are two bits for external LNA gain control 0x026[bitsD6:D5] for RX1 and RX2.

Since there is only one bit per RX you can vary the LNA gain between two levels (.i.e. the external LNA gain index can be either 0 or 1 and accordingly the gain can vary between two levels).

Please refer the external LNA section in UG for more details.

Hi Srimoyi..i want to use external LNA in bypass mode, with AGC in fast attack mode in AD9361. So, do i need only increase peak overload wait time or anything else also must be updated..? if anything else must be updated..can u please specify what to?

Hi Srimoyi..i want to use external LNA in bypass mode, with AGC in fast attack mode in AD9361. So, do i need only increase peak overload wait time or anything else also must be updated..? if anything else must be updated..can u please specify what to?

Is external LNA present in your design? if not, no need to update the gain table and the default gain table can be used, so you don't need to update the threshold values.

Please refer to the External LNA section of the user guide.

Please open a new post if you have any questions and please don't add to the old posts.