ACPF-7001 Datasheet, PDF (4/7 Pages) AVAGO TECHNOLOGIES LIMITED – High Rejection Tx Filter for US PCS Band

PCB Interface and
Mounting Instructions
Mounting Consideration and
Board Description
The ACPF-7001 filter has one
input (Pin 4), one output (Pin 8)
and 6 grounds (Pins 1, 2, 3, 5, 6,
7). Furthermore, the inside of the
filter (center pad Pin 9) is
ground-plane; therefore it must
be soldered to PCB ground.
In summary:
• Pins 1, 2, 3, 5, 6, 7, 9 are
grounded. (Figure 5)
• Demo board uses 10 mil top,
18 mil bottom Greek Coplanar
Waveguide Over Ground plane
(CPWG) style board. (See
board layer Figure 5, 6)
Note: For best performance, try
to reproduce this board stack up
closely. The demoboard uses
CPWG transmission lines for high
isolation between two ports. It
uses via holes to connect the
CPWG line from the underside of
the board to the filter mounting
pads on top. If Ground-Signal-
Ground (GSG) type board is
used, better return loss can be
achieved since it eliminates
connector mismatch.
Demo Boards
SMA connectorized Demo boards
are available for sampling. (See
board drawing in Figure 5).
Figure 5. PCB top and bottom views (vias used to connect the underside of the board to the filter
mounting pads on top).
3
Ground
2
Ground
1
Ground
1.55 SQ
4
Input
9
Ground
0.1
8
Output
0.6
0.28
0.28
5
6
Ground 0.1 _Ground
7
Ground
0.7
0.7
1.3
Figure 6a. PCB footprint dimensions, pad nomenclature, stencil dimensions (mm).
Figure 6b. Board stack up description.
3