SE2559L20 Datasheet, PDF (1/2 Pages) SiGe Semiconductor, Inc. – 2.4 GHz High Efficiency Wireless LAN Front End Preliminary

SE2559L20
2.4 GHz High Efficiency Wireless LAN Front End
Preliminary
Applications
ƒ IEEE802.11b DSSS WLAN
ƒ IEEE802.11g OFDM WLAN
ƒ Access Points, PCMCIA, PC cards
Features
ƒ Dual Mode IEEE802.11b & IEEE802.11g
ƒ Integrated PA, TX Filter, DPDT T/R and Diversity
switches
ƒ Integrated Negative Slope Power Detector
ƒ 21 dBm Output Power, 802.11b, 11 Mbits, ACPR
<-30 dBc
ƒ 18 dBm @ 3.0 % EVM, 802.11g, 54 Mbits
ƒ Single supply voltage: 3.3 V ± 10 %
ƒ Lead free, halogen free and RoHS compliant
ƒ 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
VCC
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.
ANT_A
TXEN
TXRF
50 Ohm
Match
Filter
PD_OUT
RXOUT
Bias Circuitry
Power
Detector
50 Ohm
Match
OMN
LPF
50 Ohm
Match
Switch
50 Ohm
Control
Match
C1
C2
C3
C4
ANT_B
Figure 1: Functional Block Diagram
DST-00057 ƒ Rev 1.9 ƒ May-26-2009
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