PRELIMINARY DATA SHEET
SKY13277-355LF: GaAs SP3T Absorptive
Switch 500 MHz–2.5 GHz
Features
Positive voltage control (0/3 V typ.)
G
High isolation 62 dB at 1 GHz
G
Integrated silicon CMOS driver
G
Isolated ports are absorptive
G
Available lead (Pb)-free and RoHS-compliant MSL-1 @ 260°C
per JEDEC J-STD-020
G
Functional Diagram
J
1
RFc
J
2
Description
The SKY13277-355LF is a pHEMT GaAs FET IC high isolation
absorptive single-pole 3-throw switch packaged in a 20-lead
exposed-pad plastic package for low-cost commercial applica-
tions. This switch controls signals from 500 MHz to 2.5 GHz. The
switch is ideal for cellular base station switch matrices and other
applications that require good RF impedance match independent
of switch state.
The SKY13277-355LF comprises a pHEMT switch die and a
Si CMOS controller die. The switch die contains integral
terminating resistors that present an absorptive load to the
external circuit when the switch path is in its isolation state.
The controller die has three inputs: supply voltage (V
DD
) and two
logic control bits that select the state of the pHEMT switch die.
External DC block capacitors are required on all RF ports.
The SKY13277-355LF operates from -40 °C to 85
°C.
A populated evaluation board is available.
Decoder
V
DD
VCT1
VCT2
J
3
NEW
Skyworks offers lead (Pb)-free, RoHS (Restriction of
Hazardous Substances)-compliant packaging.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
200414 Rev. C • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • October 5, 2007
1
SKYWORKS [ SKYWORKS SOLUTIONS INC. ]
