SE2547A

Dual Band 802.11a/b/g/n Wireless LAN Front End

Preliminary Information

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

SE2547A

32 pin LGA

Samples

SE2547A-R

32 pin LGA

Tape and Reel

SE2547A-EK1

N/A

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.

Functional Block Diagram

Diplexer

ANT0

PDag

Rg

CTx1 CRx1

Trap

Filter

Trap

Filter

Coupler

Power

Detector

Diplexer

Ra

2.4 GHz

PA

5 GHz

PA

ENa

ENg

Tg

Ta

Filter

Filter

ANT1

T/R

Switch

CTx0 CRx0

Figure 1: SE2547A Functional Block Diagram

DST-00094 Rev 1.9 May-26-2009

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