DATA SHEET
SE2547A: Dual-Band 802.11a/b/g/n Wireless LAN Front-End
Preliminary Information
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
202421A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • September 25, 2012 1
Applications
IEEE802.11b DSSS WLAN
IEEE802.11g OFDM WLAN
IEEE802.11a OFDM WLAN
IEEE802.11n WLAN
Access Points, PCMCIA, PC cards
Features
All RF ports matched to 50 Ω
Integrated 2.4 GHz PA, 5 GHz PA, TX Filter, T/R
switches and diplexers
Integrated Power Detector for each TX Chain
21 dBm O/P Power, 802.11b, 11 Mbits, ACPR =
35 dBc
18 dBm @ 3.0 % EVM, 802.11g, 54 Mbits
16.5 dBm @ 3.0 % EVM, 802.11a, 54 Mbits
Single supply voltage: 3.3 V ± 10 %
Lead free, RoHS compliant, Halogen free
Thin lead free plated package, 5mm x 5mm x
1.0mm, LGA Package, MSL 3
Ordering Information
Part No. Package Remark
Product Description
The SE2547A is a complete 802.11a/b/g/n WLAN RF
front-end module providing all the functionality of the
power amplifiers, filtering, power detector, Diversity
switch, diplexers and associated matching. The
SE2547A provides a complete 2.4 GHz and 5 GHz
WLAN RF solution from the output of the transceiver
to the antenna in an ultra compact form factor.
Designed for ease of use, all RF ports are matched to
50 Ω to simplify PCB layout and the interface to the
transceiver RFIC. The SE2547A also includes a
transmitter power detector for each band and transmit
chain with 20 dB of dynamic range for each transmit
chain. Each transmit chain has a separate digital
enable control for transmitter power ramp on/off
control. The power ramp rise/fall time is less than 0.7
μsec.
The device also provides a notch filter from 3.260-
3.267 GHz and 3.28-3.89 GHz prior to the input of
each 2.4 GHz and 5 GHz power amplifiers,
respectively.
Functional Block Diagram
Figure 1: SE2547A Functional Block Diagram
Diplexer
PDag
Trap
Filter
Trap
Power
Detector
Diplexer
2.4 GHz
PA
5 GHz
Tg
Filter
ANT1
CTx0
CRx0