UG-383 Datasheet, PDF (8/16 Pages) Analog Devices – Self-contained board, including synthesizer

UG-383
EV-ADF4159EB1Z/EV-ADF4159EB3Z User Guide
USING THE SOFTWARE—MAIN CONTROLS
Use the Main Controls tab to select the RL and PLL settings.
Because the evaluation board is set up to feedback the VCO/2
output to the ADF4159, in the RF Settings area, set the RF VCO
Output Frequency to half the VCO output. Set the Reference
Frequency to be the same as the applied reference signal. The
PFD frequency is calculated from the reference frequency, the
R-counter, the reference doubler, and the reference-divide-by-2.
Ensure that the value in the PFD Frequency box matches the
value specified in the loop filter design.
In the PLL Settings area, program the Charge Pump Setting
to the value for which the loop filter was designed. Program the
Phase Detector Polarity to negative when using an inverting
active loop filter configuration (as is on this evaluation board).
The Muxout drop-down box allows you to choose the signal
that is connected to the output of the MUXOUT pin.
Clicking Pulse TXdata triggers a pulse on the TXDATA pin. This
pulse starts low and then stays high for approximately 4 µs.
The register values are shown at the bottom of the window.
When the background of a register value is green, this indicates
that the value has been changed and needs to be written to the
part. Clicking the button below each register value writes that
value to the part.
Figure 7. Software—Main Controls
Rev. B | Page 8 of 16