i use ADF5901 with ADF4159. But i have two questions about ADF5901.
1. Does the output power of TX out of ADF5901 can be changed from -20dBm to +8dBm by change the Tx AMP CAL REF CODE? i connect a amplifier after ADF5901. So I should check this.
2. I think the VCO-CAL in ADF5901 is useless when i use ADF4159 to control the Vtune of VCO in ADF5901. So i want to know how do i set the N-Divider and R-Divider in ADF5901?
Because in a PLL，the N-divider and R-divider i really use is in PLL just the ADF4159 but not in VCO just the ADF5901.
look forward for your reply.
The PFD clock on the ADF4159 can run up to 110MHz where as the R-cnounter output on the ADF5901 can run to 50MHz.
So if using 100MHz reference clock the ADF4159 can run at 100MHz while the ADF5901 would be 50MHz.
So R-DIVIDER and N-DIVIDER on ADF5901 would be twice the ADF4159 values.