DATA SHEET

SE2521A80: 2.4 GHz Wireless LAN Front-End

Preliminary

Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com

202417A • 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



Access Points, PCMCIA, PC cards

Features



Dual Mode IEEE802.11b & IEEE802.11g



All RF ports matched to 50

Ω



Integrated PA, TX Filter, DPDT T/R and Diversity

switches



Integrated Power Detector



20 dBm @ 3.0 % EVM, 802.11g, 54 Mbits



20 dBm, 802.11b, ACPR = -37 dBr, 11 Mbits



Single supply voltage: 3.3 V ± 10 %



Small lead free package, 8 mm x 7 mm x 1.2

mm, MSL 3

Ordering Information

Part Number

Package

Remark

SE2521A80

24 pin LGA

Samples

SE2521A80-R

24 pin LGA

Tape and Reel

SE2521A80-EK1

N/A

Evaluation kit

Product Description

The SE2521A80 is a complete 802.11 b/g WLAN RF

front-end module providing all the functionality of the

power amplifier, power detector, T/R switch, diversity

switch and associated matching. The SE2521A80

provides a complete 2.4 GHz WLAN RF solution from

the output of the transceiver to the antennas 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 SE2521A80 also includes a

transmitter power detector with 20 dB of dynamic

range and a digital enable control for transmitter

power ramp on/off control. The power ramp rise/fall

time is 1

μsec typical.

The

SE2521A80

is

pin

for

pin

compatible

to

Skyworks’ SE2521A34 for easy transition of medium

power designs to higher power designs.

The device also provides a notch filter from 3.2-3.3

GHz prior to the input of the power amplifier.

Functional Block Diagram

Bias Circuitry

Power

Detector

ANT_B (50 Ohm)

C1

PD_OUT

TXEN

50 Ohm

Match

RXOUT

Switch

Control

C3

C2

C4

50 Ohm

Match

TXIN

50 Ohm

OMN + LPF

VCC

Notch

Filter

VCC3

ANT_A (50 Ohm)

Switch

Figure 1: Functional Block Diagram