sky65142 Skyworks Solutions, Inc., sky65142 Datasheet - Page 7

• Manufacturer Part Number: sky65142
• Description: Sky65142 100?1000 Mhz Ultra Wideband Variable Gain Amplifier
• Manufacturer: Skyworks Solutions, Inc.

Evaluation Board
Evaluation Board Layer Detail
RF In
200956 Rev. B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • February 26, 2009
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
Layer 2 and 3: Ground
Layer 1: Silk Screen
RF Out
Evaluation Board Description
The Skyworks SKY65142 evaluation board is used to test the
performance of the SKY65142 power amplifier module. 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 pad of the SKY65142 power amplifier module has
3. Bypass capacitors should be used on the DC supply lines. RF
4. The RF lines should be well separated from each other, with
NOTE: Junction temperature (T
special electrical and thermal grounding requirements. This
pad is 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 amplifiers. As such, design the con-
nection to the ground pad to dissipate the maximum wattage
produced to the circuit. Multiple vias to the grounding layer are
required.
inductor is required on the V
from the DC supply. See evaluation board schematic drawing
for more details.
solid ground in between traces, to maximize input-to-output
isolation.
poor connection to the slug and ground. This reduces the
lifetime of the device.
Layer 1: Top Metal
Layer 4: Ground
preliminary Data Sheet • SKy65142
J
CC
) of the device increases with a
supply line to block RF signal
7