MICROSEMI LX5543

LX5543
®
TM
2.4-2.5 GHz Front-End Module with Internally
Matched Power Amplifier and SP3T Switch
P RODUCTION D ATA S HEET
KEY FEATURES
DESCRIPTION
provides about 25dB power gain, and
+17dBm linear output power, with
EVM (<3%) for 64QAM/ 54Mbps
OFDM. Both gain and power are
readily measured at antenna port, with
the insertion loss of the SP3T switch
included.
The Rx path of LX5543 features low
insertion loss of 0.6dB and high input
referred 1dB gain compression point
(IP1dB) of +25dBm. Bluetooth path of
LX5543 features insertion loss 0.9dB,
and IP1dB of +29dBm.
LX5543 is available in a 16-pin, low
profile of 0.55mm, 3x3mm2 microlead package (MLPQ-16L). With its
high level of functional integration,
best-class
performance,
compact
footprint and low profile, LX5543
offers an ideal front-end solution for
the ever demanding design requirements of today’s highly integrated
mobile equipments, including 802.11
b/g/n and Bluetooth applications.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
 2.4-2.5GHz 802.11b/g/n FrontEnd Solution in a Single MLP
Package
 SP3T for Sharing Antenna
between WLAN and Bluetooth
systems
 All RF I/O Matched to 50 
 Single-Supply Voltage 3.0V to
4.2V
2
 Small Footprint: 3x3mm
 Low Profile: 0.55mm
 RoHS Compliant & Pb-Free
W W W. Microsemi .CO M
LX5543 is a WLAN front-end
module (FEM) for 802.11b/g/n and
other applications in the 2.4-2.5GHz
frequency range. LX5543 integrates
an advanced InGaP/GaAs Heterojunction Bipolar Transistor (HBT)
power amplifier with on chip
impedance matching and a Depletion
mode pHEMT (D-pHEMT) singlepole triple-throw (SP3T) switch in a
single package with 3x3mm footprint.
LX5543 provides capability of sharing
a single antenna between WLAN and
Bluetooth systems through the SP3T
switch.
The Tx path of LX5543 features a
two-stage monolithic microwave
integrated circuit (MMIC) power
amplifier with active bias circuitry,
on-chip output power detector, and
50 input/output matching inside the
package. With 3.6V supply voltage
and 82mA bias current, the Tx path
TX Features :
 Power Gain ~ 25dB*
 Pout ~ +17dBm* for 3% EVM
at Antenna
 Current ~145mA at +17dBm*
 Pout ~ +21dBm* for 11b 1Mbps
DSSS Mask Compliance
 Quiescent Current ~ 82mA
RX Features :
 Insertion Loss ~ 0.6 dB
 IP1dB ~ +25 dBm
Bluetooth Path :
 Insertion Loss ~ 0.9 dB
 IP1dB ~ +29 dBm
* Including SP3T switch loss
APPLICATIONS
 IEEE 802.11b/g/n
 Mobile Phone WLAN module
BLOCK DIAGRAM
Vref Vc1
TxIn
IMN*
PA
PAOut/
SwIn
Vc2
OMN*
Det
LX5543
Antenna
Port
RxOut
BT
*IMN:
Input Matching Network
*OMN:
Output Matching Network
Copyright  2010
Rev. 1.0, 2010-03-18
CtrlTx / CtrlRx / CtrlBT
Microsemi
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 1
LX5543
®
TM
2.4-2.5 GHz Front-End Module with Internally
Matched Power Amplifier and SP3T Switch
P RODUCTION D ATA S HEET
PRODUCT HIGHLIGHT
W W W. Microsemi .CO M
MSC
5543
5552
818A
933A
PACKAGE ORDER INFO
Plastic MLPQ
16 pin 3x3mm
RoHS Compliant /Pb-Free
LU
LX5543LU
Note: Available in Tape & Reel.
Append the letters “TR” to the part number.
(i.e. LX5543LU-TR)
ABSOLUTE MAXIMUM RATINGS
PACKAGE PIN OUT
DC Supply Voltage, RF off ...............................................................................5V
Collector Current (PA)................................................................................500mA
Total Power Dissipation....................................................................................2W
RF Input Power (TxIn)..............................................................................+10dBm
RF Input Power (Ant, SwIn, BT)..............................................................+25dBm
Maximum Junction Temperature (Tj max) ................................................ +150°C
Operation Ambient Temperature ...................................................-40°C to +85°C
Storage Temperature ....................................................................-65°C to +150°C
RoHS/Pb-Free Peak Package Temp. for Solder Reflow
(40 seconds maximum exposure)................................................... 260°C (+0, -5)
TxIn NC Vc1 Vc2
Vcc
1
13
12
Vref
2
11
SwIn
Det
3
10
CtrlRx
9
CtrlTx
16
15
GND
4
RxOut
14
5
6
7
PAOut
8
NC BT CtrlBT Ant
LU PACKAGE
(“See-Through” View from Top)
Note: Exceeding these ratings could cause damage to the device. All voltages are with respect to
Ground. Currents are positive into, negative out of specified terminal.
RoHS/Pb-free 100% Matte Tin Lead finish
THERMAL DATA
Plastic MLPQ 16-Pin
THERMAL RESISTANCE-JUNCTION TO CASE, JC
THERMAL RESISTANCE-JUNCTION TO
AMBIENT, JA
PACKAGE DATA
LU
10 C/W
50 C/W
Junction Temperature Calculation: TJ = TA + (PD x JA).
The JA numbers are guidelines for the thermal performance of the device/pc-board system. All of the
above assume no ambient airflow.
Copyright  2010
Rev. 1.0, 2010-03-18
Microsemi
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 2
LX5543
2.4-2.5 GHz Front-End Module with Internally
Matched Power Amplifier and SP3T Switch
®
TM
P RODUCTION D ATA S HEET
®
Thank you for your interest in Microsemi Analog Mixed Signal products.
W W W. Microsemi .CO M
The full data sheet for this device contains proprietary information.
To obtain a copy, please contact your local Microsemi sales representative. The
name of your local representative can be obtained at the following link
http://www.microsemi.com/contact/contactfind.asp
or
Contact us directly by sending an email to: [email protected]
Be sure to specify the data sheet you are requesting and include your company
name and contact information and or vcard.
We look forward to hearing from you.
Copyright  2010
Rev. 1.0, 2010-03-18
Microsemi
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 3