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LX5553
®
TM
2.4-2.5 GHz Front-End Module with Internally
Matched Power Amplifier, LNA & 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 LX5553 features
13dB small-signal gain, noise figure of
2.1dB, and high input referred thirdorder harmonic intercept point (IIP3) of
+5dBm, including the SP3T switch loss.
The LNA consumes about 11mA
current with a single 3.6V supply.
The Bluetooth path of LX5553
features low insertion loss of 0.9dB and
high input referred 1dB gain
compression point (IP1dB) of +29dBm.
LX5553 is available in a 16-pin, low
profile of 0.55mm, 3x3mm2 micro-lead
package (MLPQ-16L) in very low
profile of 0.55mm. With its high level
of functional integration, best-class
performance, compact footprint and low
profile, LX5553 offers an ideal frontend solution for the ever demanding
design requirements of today’s highly
integrated mobile equipments, including
802.11b/g/n and Bluetooth applications.
 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
LX5553 is a high-integration, highperformance WLAN front-end module
(FEM) for 802.11b/g/n and other
applications in the 2.4-2.5GHz
frequency range. LX5553 integrates
an advanced InGaP/GaAs Heterojunction Bipolar Transistor (HBT)
power amplifier with on chip
impedance matching, a fully matched
low noise amplifier based on InGaAs
Enhancement mode pseudo-morphic
high electron mobility transistor (EpHEMT) technology, and a Depletion
mode pHEMT (D-pHEMT) singlepole triple-throw (SP3T) switch, all
into a single package with 3x3mm
footprint. LX5553 provides capability
of sharing a single antenna between
WLAN and Bluetooth systems
through the SP3T switch.
The Tx path of LX5553 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 ~ 25 dB*
 Pout ~ +17 dBm* for 3% EVM at
Antenna
 Current ~145 mA at +17 dBm*
 Pout ~ +21 dBm* for 11b 1Mbps
DSSS Mask Compliance
 Quiescent Current ~ 82 mA
RX Features :
 Gain ~ 13 dB*
 Noise Figure ~ 2.1 dB*
 IIP3 ~ +5 dBm*
Bluetooth Path :
 Insertion Loss ~ 0.9 dB
 IP1dB ~ +29 dBm
* Including SP3T switch loss
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
APPLICATIONS
 IEEE 802.11b/g/n
 Mobile Phone WLAN module
BLOCK DIAGRAM
PAOut/
SwIn
Vc2
Vref Vc1
IMN*
OMN*
PA
LX5553
TxIn
Det
LNAOut
Antenna
Port
LNA
Vdd
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
LX5553
®
TM
2.4-2.5 GHz Front-End Module with Internally
Matched Power Amplifier, LNA & SP3T Switch
P RODUCTION D ATA S HEET
PRODUCT HIGHLIGHT
W W W. Microsemi .CO M
MSC
5553
5552
818A
845A
PACKAGE ORDER INFO
Plastic MLPQ
16 pin 3x3mm
RoHS Compliant /Pb-Free
LU
LX5553LU
Note: Available in Tape & Reel.
Append the letters “TR” to the part number.
(i.e. LX5553LU-TR)
ABSOLUTE MAXIMUM RATINGS
PACKAGE PIN OUT
DC Supply Voltage, RF off................................................................................5V
Collector Current (PA)................................................................................500mA
Drain Current (LNA) ....................................................................................40mA
Total Power Dissipation....................................................................................2W
RF Input Power (TxIn) ............................................................................+10 dBm
RF Input Power (Ant, SwIn, BT) ............................................................+25 dBm
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)
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.
TxIn NC Vc1 Vc2
16
Vcc
15
14
1
13
12
PAOut
Vref
2
11
SwIn
Det
3
10
CtrlRx
LNAOut
4
9
CtrlTx
GND
5
6
7
8
Vdd BT CtrlBT Ant
LQ PACKAGE
(“See-Through” View from Top)
RoHS/Pb-free 100% Matte Tin Lead finish
THERMAL DATA
PACKAGE DATA
LU
Plastic MLPQ 16-Pin
THERMAL RESISTANCE-JUNCTION TO CASE, JC
THERMAL RESISTANCE-JUNCTION TO
AMBIENT, JA
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
LX5553
2.4-2.5 GHz Front-End Module with Internally
Matched Power Amplifier, LNA & 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