SE2547A Datasheet, PDF (1/2 Pages) SiGe Semiconductor, Inc. – Dual Band 802.11a/b/g/n Wireless LAN Front End Preliminary Information

SE2547A
Dual Band 802.11a/b/g/n Wireless LAN Front End
Preliminary Information
Applications
ƒ IEEE802.11b DSSS WLAN
ƒ IEEE802.11g OFDM WLAN
ƒ IEEE802.11a OFDM WLAN
ƒ IEEE802.11n WLAN
ƒ Access Points, PCMCIA, PC cards
Features
ƒ All RF ports matched to 50 Ω
ƒ Integrated 2.4 GHz PA, 5 GHz PA, TX Filter, T/R
switches and diplexers
ƒ Integrated Power Detector for each TX Chain
ƒ 21 dBm O/P Power, 802.11b, 11 Mbits, ACPR =
35 dBc
ƒ 18 dBm @ 3.0 % EVM, 802.11g, 54 Mbits
ƒ 16.5 dBm @ 3.0 % EVM, 802.11a, 54 Mbits
ƒ Single supply voltage: 3.3 V ± 10 %
ƒ Lead free, RoHS compliant, Halogen free
ƒ Thin lead free plated package, 5mm x 5mm x
1.0mm, LGA Package, MSL 3
Ordering Information
Part No.
SE2547A
SE2547A-R
SE2547A-EK1
Package
32 pin LGA
32 pin LGA
N/A
Functional Block Diagram
Remark
Samples
Tape and Reel
Evaluation kit
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.
Rg
Ra
Tg
Ta
PDag
CTx0 CRx0
CTx1 CRx1
Diplexer
Trap
Filter
2.4 GHz
PA
Trap
Filter
5 GHz
PA
Power
Detector
Coupler
Filter
Diplexer
Filter
T/R
Switch
ANT0
ANT1
ENa
ENg
Figure 1: SE2547A Functional Block Diagram
DST-00094 ƒ Rev 1.9 ƒ May-26-2009
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