SKY65206-13_09 Datasheet, PDF (7/12 Pages) Skyworks Solutions Inc. – WLAN 802.11b/g Intera Front-End Module

DATA SHEET • SKY65206-13 FRONT-END MODULE
Evaluation Board Description
The SKY65206 Evaluation Board is used to test the performance
of the SKY65206-13 FEM. An assembly drawing for the Evaluation
Board is shown in Figure 11. A schematic diagram of the
SKY65206 Evaluation Board is shown in Figure 12.
Circuit Design Configurations
The following design considerations are general in nature and
must be followed regardless of final use or configuration:
1. Paths to ground should be made as short as possible.
2. The ground pads of the SKY65206-13 have special electrical
and thermal grounding requirements. These pads are the
main thermal conduit for heat dissipation. Since the circuit
board acts as the heat sink, it must shunt as much heat as
possible from the device. Therefore, design the connection to
the ground pads to dissipate the maximum wattage produced
by the circuit board.
3. Skyworks recommends including external bypass capacitors
on the VCC voltage inputs of the device.
Evaluation Board Test Procedure
Step 1: Connect a 3.3 V supply to VCC (see Figure 11). If
available, enable the current limiting function of the
power supply to 600 mA.
Step 2: Connect a 3.3 V supply to VCTL1, 2, 3, and 4 (these are
ports C1, 2, 3, and 4, respectively, on the Evaluation
Board). Any unused VCTL pins must be grounded or set
to 0 V. Do not float the connections.
Step 3: Connect a 3.0 V supply to TX_EN (see Figure 11).
Step 4: Connect a digital volt meter to PD_OUT (see Figure 11).
Step 5: Connect a signal generator to the RF signal input port.
Set it to the desired RF frequency at a power level of
–15 dBm or less to the Evaluation Board but DO NOT
enable the RF signal.
Step 6: Connect a spectrum analyzer to the RF signal output port.
CAUTION: Terminate all unused ports in 50 Ω.
Step 7: Enable the power supplies.
Step 8: Enable the RF signal.
Step 9: Take measurements.
ANT_A
ANT_B
GND
VCC
TX_EN
BIAS
GND
VCTL4
VCTL3
VCTL2
VCTL1
PD_OUT
GND
TX_IN
RX_OUT
S1558
Figure 11. SKY65206-13 Evaluation Board Assembly Drawing
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
200102I • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • July 10, 2009
7