SE2559L20
2.4 GHz High Efficiency Wireless LAN Front End
Preliminary
Applications
IEEE802.11b DSSS WLAN
IEEE802.11g OFDM WLAN
Access Points, PCMCIA, PC cards
Product Description
The SE2559L20 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 SE2559L20
provides a complete 2.4 GHz WLAN RF solution from
the output of the transceiver to the antennas in an
ultra compact form factor.
The SE2559L20 is designed for ease of use, with all
the critical matching and harmonic filtering integrated,
offering a simple 50
Ω
interface to the antenna. The
SE2559L20 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 0.5
μs
typical.
The device also provides a 3.2–3.3 GHz notch filter
prior to the input of the power amplifier.
Features
Dual Mode IEEE802.11b & IEEE802.11g
Integrated PA, TX Filter, DPDT T/R and Diversity
switches
Integrated Negative Slope Power Detector
21 dBm Output Power, 802.11b, 11 Mbits, ACPR
<-30 dBc
18 dBm @ 3.0 % EVM, 802.11g, 54 Mbits
Single supply voltage: 3.3 V ± 10 %
Lead free, halogen free and RoHS compliant
Small lead free, plated package, 4 mm x 5 mm x
0.9 mm, MSL 1
Ordering Information
Part No.
SE2559L20
SE2559L20-R
SE2559L20-EK1
Package
22 pin QFN
22 pin QFN
N/A
Remark
Samples
Tape & Reel
Evaluation kit
Functional Block Diagram
V
CC
ANT_A
50 Ohm
Match
TXEN
Bias Circuitry
TX
RF
50 Ohm
Match
Filter
OMN
LPF
PD_OUT
Power
Detector
50 Ohm
Match
50 Ohm
Match
Switch
Control
C1
RX
OUT
C2
C3
C4
ANT_B
Figure 1: Functional Block Diagram
DST-00057
Rev 1.9
May-26-2009
1 of 2
SE2559L20
2.4 GHz High Efficiency Wireless LAN Front End
Preliminary
http://www.sige.com
Email: sales@sige.com
Customer Service Locations:
North America:
1050 Morrison Drive, Suite 100
Ottawa ON K2H 8K7 Canada
Phone: +1 613 820 9244
Fax: +1 613 820 4933
Hong Kong
Phone: +852 3428 7222
Fax: +852 3579 5450
San Diego
Phone: +1 858 668 3541 (ext. 226)
Fax: +1 858 668 3546
United Kingdom
Phone: +44 1279 464217
Fax: +44 1279 464201
Product Preview
The datasheet contains information from the product concept specification. SiGe Semiconductor, Inc. reserves the right to change
information at any time without notification.
Preliminary Information
The datasheet contains information from the design target specification. SiGe Semiconductor, Inc. reserves the right to change
information at any time without notification.
Production testing may not include testing of all parameters.
Information furnished is believed to be accurate and reliable and is provided on an “as is” basis. SiGe Semiconductor, Inc. assumes
no responsibility or liability for the direct or indirect consequences of use of such information nor for any infringement of patents or
other rights of third parties, which may result from its use. No license or indemnity is granted by implication or otherwise under any
patent or other intellectual property rights of SiGe Semiconductor, Inc. or third parties. Specifications mentioned in this publication
are subject to change without notice. This publication supersedes and replaces all information previously supplied. SiGe
Semiconductor, Inc. products are NOT authorized for use in implantation or life support applications or systems without express
written approval from SiGe Semiconductor, Inc.
Copyright 2009 SiGe Semiconductor, Inc.
All Rights Reserved
DST-00057
Rev 1.9
May-26-2009
2 of 2
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