EV-RADAR-MMIC datasheet(9/28 Pages) AD

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EV-RADAR-MMIC2 User Guide

UG-866

Rev. B | Page 9 of 28

ADF4159 CONTROLS

The ADF4159 Controls tab controls the ADF4159 device settings

(see Figure 5).

ADF4159 Main Controls

Use the Main Controls tab to select the RF and PLL settings. In

the RF Settings pane, set the RF VCO Output Frequency value to

half the ADF5901 VCO output. Set the Reference Frequency value

to the same frequency as the applied reference signal (TCXO or

external signal) as described in the Input Signals section. The

phase frequency detector (PFD) frequency is calculated from the

reference frequency, the R counter, the reference doubler, and

the reference divided by 2. Ensure that the PFD Frequency

value matches the value specified in the loop filter design.

In the PLL Settings section, program the Charge Pump Setting

to the value designed for the loop.

Program the Phase Detector Polarity to negative when using

an inverting active loop filter configuration (use a passive loop

filter on the EV-RADAR-MMIC).

Select the signal that is connected to the output of the

MUXOUT pin from the Muxout drop down menu.

The register values are shown at the bottom of the window.

When the background of a register value is green, it indicates

the value changed and must be written to the device. Clicking the

button below each register value writes that value to the device.

Figure 5. Main Controls Tab

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