EV-ADF41020EB1Z Analog Devices, EV-ADF41020EB1Z Datasheet - Page 4

• Manufacturer Part Number: EV-ADF41020EB1Z
• Description: Clock & Timer Development Tools Evaluation Board
• Manufacturer: Analog Devices
• Type: PLL Synthesizers / Multipliers / Dividersr

Specifications of EV-ADF41020EB1Z

• Rohs: yes
• Product: Evaluation Boards
• Tool Is For Evaluation Of: ADF41020
• Frequency: 18 GHz
• Operating Supply Voltage: 5.5 V, 15 V
• Interface Type: USB
• Operating Supply Current: 30 mA
• Factory Pack Quantity: 1

UG-405
EVALUATION BOARD HARDWARE
The evaluation board comes with a USB cable to connect to the
USB port of a PC. The evaluation board silkscreen is shown in
Figure 3. The
Figure 8, Figure 9, Figure 10, and Figure 11.
POWER SUPPLIES
The board is powered via two external supplies, 5.5 V and 15 V,
and connected as described in the Quick Start Guide Section.
INPUT SIGNALS
The 100 MHz TCXO provides the necessary reference signal.
An external REF
slew rate reference source is best for achieving the stated
performance of the ADF41020.
OUTPUT SIGNALS
The VCO output is available at EXT_VCOOUT through a
standard SMA connector.
LOOP FILTER
An active loop filter using standard feedback is inserted
between the charge pump output and the VCO input. Figure 2
shows the
how the
related to the evaluation board descriptors in Figure 8, Figure 9,
Figure 10, and Figure 11. Figure 3 shows the loop filter
component placements.
The design parameters for the loop filter are for a center
frequency of 12,500 MHz, a PFD frequency of 2.5 MHz, and
an active loop filter bandwidth of 30 kHz. To design a filter for
ADIsimPLL
ADIsimPLL
EV-ADF41020EB1Z
IN
may be used if desired. A low noise, high
loop filter component descriptors are
loop filter configuration. Table 1 shows
schematics are shown in
Figure 3. Evaluation Board Silkscreen
Rev. 0 | Page 4 of 20
different frequency setups, use the
software to generate filter component values and evaluate
results.
Table 1. Filter Components
ADIsimPLL
C1
R1
C2
R2
C3
R3
C4
DEFAULT OPERATION
All components necessary for LO generation are inserted
on the board. The board is shipped with the
synthesizer, an active loop filter, and the VCO.
C1
Evaluation Board User Guide
R1
Figure 2.
V
R
C3
R2
ADIsimPLL
Evaluation Board
C21
R59
C19
R10
C18
R12
C20
C2
ADIsimPLL
Filter
R3
ADF41020
C4
simulation