adf5002 Analog Devices, Inc., adf5002 Datasheet - Page 7

• Manufacturer Part Number: adf5002
• Description: 4 Ghz To 18 Ghz Divide-by-8 Prescaler Adf5002
• Manufacturer: Analog Devices, Inc.

EVALUATION BOARD PCB
The evaluation board has four connectors as shown in Figure 8.
The RF input connector (J4) is a high frequency precision SMA
connector from Emerson. This connector is mechanically
compatible with SMA, 3.5 mm, and 2.92 mm cables.
The evaluation board is powered from a single 3.0 V to 3.6 V
supply, which should be connected to the J1 SMA connector.
The power supply can also be connected using the T3 (VDDx)
and T2 (GND) test points.
The differential RF outputs are brought out on the J2 and J3
SMA connectors. If only one of the outputs is being used, the
unused output should be correctly terminated using a 50 Ω
SMA termination.
The chip enable (CE) pin can be controlled using the T1 test
point. If this function is not required, the test point can be left
unconnected.
BILL OF MATERIALS
Table 4.
Qty
1
1
3
1
3
1
Reference Designator
C1
C2
J1, J2, J3
J4
T1, T2, T3
U1
Figure 8. Evaluation Board Silkscreen—Top View
Description
0.1 μF, 0603 capacitor
10 pF, 0402 capacitor
SMA RF connector
Test points
ADF5002 RF prescaler
SMA RF connector
Rev. 0 | Page 7 of 12
PCB MATERIAL STACK-UP
The evaluation board is built using Rogers RO4003C material
(0.008 inch). RF track widths are 0.015 inch to achieve a controlled
50 Ω characteristic impedance. The complete PCB stack-up is
shown in Figure 9.
Supplier
Murata
Murata
Emerson
Emerson
Vero
Analog Devices, Inc.
ε
ε
r
r
= 3.38. STARTING COPPER WEIGHT 0.5oz/0.5oz
= 3.38. STARTING COPPER WEIGHT 0.5oz/0.5oz
ROGERS RO4003C LAMINATE 0.008”
ROGERS RO4003C LAMINATE 0.008”
1.5oz (53µm) FINISHED COPPER
0.5oz (18µm) FINISHED COPPER
0.5oz (18µm) FINISHED COPPER
1.5oz (53µm) FINISHED COPPER
Figure 9. Evaluation Board PCB Layer Stack-Up
FR4 PREPREG
0.0372”
Part Number
GRM1555C1H100JZ01D
20-2137
GRM188R71H104KA93D
142-0701-851
142-0761-801
ADF5002BCPZ
COPPER TO COPPER
0.062” ± 0.003”
ADF5002