SKY13278-313LF Datasheet, PDF (5/6 Pages) Skyworks Solutions Inc. – GaAs SPDT Switch 100 MHz-2.5 GHz

Evaluation Board
The evaluation board for the SKY13278-313 allows the switch to
be fully exercised. The RF common port is marked “J₁”, and the
two switched RF ports are marked “J₂” and “J₃”. All of the RF
ports have SMA connectors mounted. The control voltage inputs
are marked “V₁” and “V₂”.
The printed circuit board material is FR4. The RF dielectric layer
is 0.012 inches thick, ½ oz. copper. The RF transmission lines are
each 50 Ω (nominal) microstrip.
There are three DC blocking capacitors on the board, C₁, C₂ and
C₃, each of which is in series with one of the RF ports. These
capacitors are 47 pF. For improved insertion loss at signal fre-
quencies below approximately 500 MHz these capacitors should
be replaced with larger capacitance capacitors, such as 1000 pF.
Item
C₁, C₂, C₃
J₁, J₂, J₃
U1
Printed Circuit Board
Description
DC Blocking Capacitor, 47 pF
SMA Connector, Edge Mount
SKY13278-313
Skyworks SK39990
Comments
0402
DATA SHEET • SKY13278-313LF
J₂
C₁
C₃
J₃
J₁
V₁
C₂
V₂
C₁
J₂
V₁
C₂
U₁
J₁
C₃
J₃
V₂
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
200504 Rev. D • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 30, 2007
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