PE42540
Product Specification
Evaluation Kit
The SP4T switch EK Board was designed to ease
customer evaluation of Peregrine’s PE42540. The
RF common port is connected through a 50Ω
transmission line via the top SMA connector, J1.
RF1, RF2, RF3 and RF4 are connected through
50Ω transmission lines via SMA connectors J2, J4,
J3 and J5, respectively. A through 50Ω transmission
is available via SMA connectors J6 and J7. This
transmission line can be used to estimate the loss of
the PCB over the environmental conditions being
evaluated.
The board is constructed of a four metal layer
material with a total thickness of 62 mils. The dual
clad top RF layer is Rogers RO4003 material with
an 8 mil RF core and er = 3.55. The middle layers
provide ground for the transmission lines. The
transmission lines were designed using a coplanar
waveguide with ground plane model using a trace
width of 15 mils, trace gaps of 10 mils, and metal
thickness of 2.1 mils.
Figure 21. Evaluation Board Layouts
101-0515
Figure 22. Evaluation Board Schematic
J1
J2
RF1
RF3
J3
17
18
19
20
21
22
23
24
GND
GND
GND
RFC
GND
GND
GND
GND
16
15
14
13
12
11
10
9
RFC
GND
RF1
GND
GND
GND
GND
RF3
GND
PE42540
U1
GND
RF2
GND
GND
GND
GND
RF4
GND
8
7
6
5
4
3
2
1
RF2
J4
RF4
J5
R1
1M
J8
HEADER 14
R2
1M
2
4
6
8
10
12
14
2
4
6
8
10
12
14
1
3
5
7
9
11
13
1
3
5
7
9
11
13
R3
0 OHM
R4
0 OHM
J6
J7
Through Line
R5
0 OHM
R6
0 OHM
C5
0.1uF
C6
0.1uF
C1
22pF
C2
22pF
25
26
27
28
29
30
31
32
C3
22pF
C4
22pF
GND
GND
VDD
GND
V1
V2
VSS
GND
102-0612
©2010-2012 Peregrine Semiconductor Corp. All rights reserved.
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Document No. 70-0299-09
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