SKY66115-11_17 Datasheet, PDF (6/12 Pages) Skyworks Solutions Inc. – 400 to 510 MHz Front-End Module for Range Extension Applications

DATA SHEET • SKY66115-11: 400 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. Table 9
identifies variations in components used for different EK# boards
at their respective frequencies. 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 four layers.
SMA
J3
SMA
J4
R1
CSD
1 kΩ
R2
CTX
1 kΩ
C7
100 pF
C6
100 pF
R3
0Ω
C10
C11
DNI
DNI
C9
1 _GND
2 _RX
3 _GND
4 _TX
5 _GND
L2
VDD
C4
100 nF
SKY66115-11
U1
GND ¹³
ANT ¹²
GND ¹¹
GND ¹⁰
GND ⁹
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
J1
L1
SMA
C1
C2
VCC
C3
100 nF
C5
4.7 uF
Note: C3 is closest to DUT
Figure 9. SKY66115-11 Evaluation Board Schematic
Table 9. Components Used by Frequency Band and Corresponding EK Board
Frequency MHz
C8
L1
C1
C2
L2
C9
EK#
470 to 510
DNI
0Ω
DNI
DNI
DNI
0Ω
EK1
420 to 440
3.9 pF
9.1 nH
2.7 pF
3.9 pF
15 nH
6.8 pF
EK4
400 to 420
3.9 pF
10 nH
4.0 pF
6.0 pF
15 nH
8.0 pF
EK5
203309-009
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
6
January 11, 2017 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 203309G