LX5540
Co-Package 2.3 – 2.5 GHz HBT Power
Amplifier & pHEMT Low Noise Amplifier
TM
®
PRODUCTION DATA SHEET
DESCRIPTION
LX5540 is a co-package RFIC
consisting of an InGaP/GaAs
Heterojunction Bipolar Transistor
(HBT) power amplifier and a InGaAs
Enhancement mode pseudomorphic
HEMT (E-pHEMT) low noise
amplifier. Both are optimized for
WLAN applications in the 2.3-2.5
GHz frequency range. The PA is
implemented as a two-stage
monolithic microwave integrated
circuit (MMIC) with active bias and
output pre-matching. The LNA is fully
matched internally and no external
matching circuit is required.
Both devices operate with single
low voltage supply of 3.3V. The PA
offers 28 dB power gain between 2.3-
2.5GHz, at a low quiescent current of
80mA.
For 20dBm OFDM output power
(64QAM, 54Mbps), the PA provides a
low EVM (Error-Vector Magnitude) of
3%, and consumes 145 mA total DC
current.
The LNA offers 14 dB gain, 1.5 dB
noise figure and a high input IP3 of +4
dBm at 10 mA of DC current.
LX5540 is available in a 16-pin
3mmx3mm micro-lead package
(MLPQ-16L). The compact footprint,
low profile, and thermal capability of
the MLP package makes the LX5540 an
ideal solution for medium-gain power
transmitter and very low noise receiver
requirements for IEEE 802.11b/g
applications.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
KEY FEATURES
Advanced InGaP HBT
2.3-2.5GHz Operation
Single-Polarity 3.3V
Supply
Quiescent Current 80mA
Power Gain 28 dB
Total Current 145mA for
Pout=20 dBm OFDM
EVM~3% at 20dBm
54Mbps /64QAM
LNA Gain ~ 14 dB
LNA Noise Figure ~ 1.5dB
LNA Input IP3 ~ +4dBm
On-Chip Bias Circuit
On-Chip Input/Output
Match
Small Footprint: 3x3mm
2
WWW.Microsemi .COM
Low Profile: 0.45mm
APPLICATIONS
IEEE 802.11b/g
PRODUCT HIGHLIGHT
PACKAGE ORDER INFO
LL
MSC
5530
608Y
MSC
5540
717A
L
L
X
X
5
5
5
5
4
4
0
0
Plastic MLPQ
Microsemi
Analog Mixed Signal Group
Copyright © 2006
Rev. 1.0e, 2007-09-14
16 pin 3X3 mm
RoHS Compliant / Pb-free
LX5540LL
Note: Available in Tape & Reel.
Append the letters “TR” to the part number.
(i.e. LX5540LL-TR)
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
