SE2548A

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, Halogen free, RoHS compliant, MSL 3

5mm x 5mm x 1.0mm, LGA Package

Ordering Information

Part No.

Package

Remark

SE2548A

32 pin LGA

Samples

SE2548A-R

32 pin LGA

Tape and Reel

SE2548A-EK1

N/A

Evaluation kit

Product Description

The SE2548A is a complete 802.11a/b/g/n WLAN RF

front-end module providing all the functionality of the

power amplifiers, filtering, power detector, T/R switch,

diplexers and associated matching. The SE2548A

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 SE2548A 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.

The SE2548A packaged in 5mm x 5mm x 1.0mm,

Halogen free, Lead free, ROHS compliant, MSL 3

LGA package.

Functional Block Diagram

Figure 1: SE2548A Functional Block Diagram

DST-00092 Rev 1.8 Sep-14-2009

Confidential

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