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SE2521A80
2.4 GHz Wireless LAN Front End Preliminary
Applications
IEEE802.11b DSSS WLAN IEEE802.11g OFDM WLAN Access Points, PCMCIA, PC cards
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 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 sec typical. The SE2521A80 is pin for pin compatible to SiGe's 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. Remark Samples Tape and Reel Evaluation kit
Features
Dual Mode IEEE802.11b & IEEE802.11g All RF ports matched to 50 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 SE2521A80 SE2521A80-R SE2521A80-EK1 Package 24 pin LGA 24 pin LGA N/A
Functional Block Diagram
VCC
VCC3
TXEN
Bias Circuitry
TXIN
50 Ohm Match
Notch Filter
50 Ohm OMN + LPF
Switch
ANT_A (50 Ohm) ANT_B (50 Ohm)
PD_OUT
Power Detector 50 Ohm Match
Switch Control
RXOUT
C1 C2 C3 C4
Figure 1: Functional Block Diagram
132-DST-01
Rev 1.3
May-26-2009
QA040506
1 of 2
SE2521A80
2.4 GHz Wireless LAN Front End Preliminary
http://www.sige.com Email: sales@sige.com
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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
132-DST-01
Rev 1.3
May-26-2009
QA040506
2 of 2

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