PCB Interface & Mounting instructions
Mounting Consideration and board description
The ACPF- 7002 FBAR filter has one input (Pin 1),
one output (Pin 3) and two grounds (Pins 2, 4).
• Demo board uses 3 mil Getek Microstrip.
The demoboard uses CPWG transmission lines for
high isolation between the two ports. It uses via
holes to connect the CPWG line from the
underside of the board to the filter mounting pads
on top.
Note:
For best performance, try to reproduce this board stack up
closely. If Ground-Signal-Ground (GSG) type board is used,
better return loss can be achieved since it eliminates
connector mismatch.
Demo boards
Demo boards are available.
(See board drawing in Figure 7, 8, 9).
Layer1 (signal)
Input connection
TOP
BACK
Output connection
Figure 8. PCB Footprint pad
0.7 mils
Getek
Getek ML200D (
T
=3.9)
3 mils
0.7 mils
Getek
Getek ML200D (
T
=4.2)
28 mils
Layer 2 (ground)
Figure 9. Closer look at the recommended board footprint and soldermask
Layer 3 (signal)
Getek
Getek material ML200D and RG200D
Figure 7. Board stack up description
4
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