SKY66115-11 Datasheet, PDF (6/11 Pages) Skyworks Solutions Inc. – 470 to 510 MHz Front-End Module for Range Extension Applications

DATA SHEET • SKY66115-11: 470 TO 510 MHz FEM
Evaluation Board Description
The SKY66115-11 Evaluation Board is used to test the
performance of the SKY66115-11 front-end module. An
Evaluation Board schematic diagram is provided in Figure 9. An
optional low-pass filter (LPF) can be incorporated on the ANT port
to provide additional rejection of PA output harmonic levels and/or
limit unwanted signals from entering the receive path. The board
layer detail is provided in Figure 10.
PCB Recommendations:
 Metal Layer 1 = RF traces + control lines. Core thickness
between top RF layer and ground plane is critical.
 Metal Layer 2 = Solid ground plane. No traces routing.
 Metal Layer 3 and 4 = Control lines + VCC traces (no VCC
plane).
 Pour copper on each layer connected to the ground plane. Use
VCC traces in a star distribution pattern.
 Always use 4 layers.
R1
CSD
1 kΩ
R2
CTX
1 kΩ
C7
100 pF
C6
100 pF
VDD
C4
100 nF
J2
VCC
2
1 VCC
4
3
CTX
6
5
8
7
CSD 10
9
12
11
VDD 14
13
VDD = VCC (jumper between 2 and 4) or different supply.
Pin 13 = N/C
C8
DNI
1 _GND
GND ¹³
SMA
J3
2 _RX
3 _GND
SKY66115-11
U1
ANT ¹²
GND ¹¹
J1
SMA
L1
C1 0 Ω
C2
DNI
DNI
SMA
4 _TX
GND ¹⁰
J4
5 _GND
GND ⁹
VCC
C3
100 nF
C5
4.7 μF
NOTE: C3 is closest to DUT
Figure 9. SKY66115-11 Evaluation Board Schematic
203309D-009
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
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February 26, 2016 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 203309E