We have developed our own PCB which is similar to ADI eval board. However when setting Tx attn. in dB using GUI software, we get more power if large value of attn(e.g. 25dB). is set. We get less power if attn. is set to 0.
I)Could there be any calibration issue? When we are using ADI eval board we don't see this issue. We did check the Hardware control line and made sure the schematic/layout is correct.
ii) is there another way to set the total Tx path gain instead of just using the Tx attn. in GUI?