SE2545A23 Datasheet, PDF (1/2 Pages) SiGe Semiconductor, Inc. – Dual Band 802.11n Wireless LAN Front End Preliminary Information

SE2545A23
Dual Band 802.11n Wireless LAN Front End
Preliminary Information
Applications
ƒ 802.11n, MIMO solutions
ƒ IEEE802.11b DSSS WLAN
ƒ IEEE802.11g OFDM WLAN
ƒ IEEE802.11a OFDM WLAN
ƒ Access Points, PCMCIA, PC cards
Features
ƒ 2 Transmit and 2 receive path architecture
ƒ All RF ports matched to 50 Ω
ƒ Integrated 2.4 GHz PA, 5 GHz PA, TX Filter, T/R
switches and diplexers
ƒ Integrated Power Detector for each TX Chain
ƒ 18 dBm O/P Power, 802.11b, 11 Mbits, ACPR =
32 dBc
ƒ 18 dBm @ 3.0 % EVM, 802.11g, 54 Mbits
ƒ 15 dBm @ 3.0 % EVM, 802.11a, 54 Mbits
ƒ Single supply voltage: 3.3 V ± 10 %
ƒ Lead free and RoHS compliant
ƒ Thin lead free plated package, 10 mm x 14 mm x
1.1 mm, MSL 3
Ordering Information
Part No.
SE2545A23
SE2545A23-R
SE2545A23-EK1
Package
48 pin LGA
48 pin LGA
N/A
Remark
Samples
Tape & Reel
Evaluation kit
Functional Block Diagram
Product Description
The SE2545A23 is a complete 802.11n WLAN RF
front-end module providing all the functionality of the
power amplifiers, power detector, T/R switch,
diplexers and associated matching. The SE2545A23
provides a complete 2.4 GHz and 5 GHz WLAN
Multiple Input, Multiple Output (MIMO) 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 SE2545A23 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 0.5
μsec.
The device also provides a notch filter from 3.2-3.3
GHz and 3.2-3.9 GHz prior to the input of each 2.4
GHz and 5 GHz power amplifiers, respectively.
ROg
ROa
TOg
TOa
PU0a PU0g
PD0ag
RX0ag TX0ag
Diplexor
T/R
Switch
A0
Trap
Filter
Trap
Filter
5 GHz
PA
2.4 GHz
PA
Power Detector
Coupler
Diplexer
T1a
Trap
Filter
5 GHz
PA
Coupler
Power Detector
Diplexer
T1g
Trap
Filter
2.4 GHz
PA
R1a
Diplexor
R1g
T/R
Switch
A1
PU1a
PU1g
PD1ag
RX1ag TX1ag
Figure 1: Functional Block Diagram
218-DST-01 ƒ Rev 1.4 ƒ May-26-2009
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