Product Description
Sirenza Microdevices’ SZA-5044 is a high efficiency class AB
Heterojunction Bipolar Transistor (HBT) amplifier housed in a
low-cost surface-mountable plastic package. This HBT ampli-
fier is made with InGaP on GaAs device technology and fabri-
cated with MOCVD for an ideal combination of low cost and
high reliability. This product is specifically designed as a final
or driver stage for 802.11a equipment in the 4.9 - 5.9 GHz
band for a 5V supply. Optimized on-chip impedance matching
circuitry provides a 50Ω nominal RF input impedance. A sin-
gle external output matching circuit covers the entire 4.9-
5.9GHz band simultaneously. The external output match
allows for load line optimization for other applications or opti-
mized performance over narrower bands. This product is
available in a RoHS Compliant and Green package with matte
tin finish, designated by the “Z” package suffix.
SZA-5044
SZA-5044Z
Pb
RoHS Compliant
&
Green
Package
4.9 – 5.9 GHz 5V Power Amplifier
4mm x 4mm QFN Package
Product Features
•
•
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•
•
•
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Functional Block Diagram
Vcc
Power
Up/Down
Control
Active
Bias
Active
Bias
Active
Bias
802.11a 54Mb/s Class AB Performance
Pout = 22dBm @ 3% EVM, 5V, 343mA
High Gain = 33dB
Output Return Loss < -11dB for Linear Tune
On-chip Output Power Detector
P1dB = 30dBm @ 5V
Simultaneous 4.9- 5.9GHz Performance
Robust - Survives RF Input Power = +15dBm
Power up/down control < 1µs, Vpc 2.9V to 5V
RFIN
RFOUT
Applications
802.11a WLAN, OFDM
5.8GHz ISM Band, 802.16 WiMAX
Power Detector
Vout
Key Specifications
Symbol
f
O
P
1dB
Parameters: Test Conditions, App circuit page 4
Z
0
= 50Ω, V
CC
= 5.0V, Icq = 270mA, T
BP
= 25ºC
Frequency of Operation
Output Power at 1dB Compression – 5.15 GHz
Output Power at 1dB Compression – 5.875 GHz
Gain at 4.9 GHz
S
21
Gain at 5.15 GHz
Gain at 5.875 GHz
Pout
NF
IM3
IRL
ORL
Vdet Range
Icq
I
VPC
I
LEAK
R
th, j-l
Output power at 3% EVM 802.11a 54Mb/s - 5.15GHz
Output Power at 3% EVM 802.11a 54Mb/s - 5.875GHz
Noise Figure at 5.875 GHz
Third Order Intermod at 18dBm per tone - 5.875GHz
Worst Case Input Return Loss 4.9-5.875GHz
Worst Case Output Return Loss 4.9-5.875GHz
Output Voltage Range for Pout=10dBm to 26dBm
Vcc Quiescent Current
Power Up Control Current, Vpc=5V ( I
VPC1
+ I
VPC2
+ I
VPC3
)
Off Vcc Leakage Current Vpc=0V
Thermal Resistance (junction - lead)
Unit
MHz
dBm
dB
dB
dB
dBm
dB
dBc
dB
V
mA
mA
uA
ºC/W
230
8.6
9.3
25.7
Min.
4900
30.2
27.5
30.7
29
32.7
33.0
27.7
21
22
6.3
-39
11.6
12.3
0.8 to 1.9
270
1.7
8
24
100
310
-35
29.7
34.7
Typ.
Max.
5900
The information provided herein is believed to be reliable at press time. Sirenza Microdevices assumes no responsibility for ina ccuracies or ommisions.
Sirenza Microdevices assumes no responsibility for the use of this information, and all such information shall be entirely at the user’s own risk. Prices and specifications are subject to change without notice. No patent
rights or licenses to any of the circuits described herein are implied or granted to any third party. Sirenza Microdevices does not authorize or warrant any Sirenza Microdevices product for use in life-support devices
and/or systems.
Copyright 2002 Sirenza Microdevices, Inc. All worldwide rights reserved.
303 South Technology Court Broomfield, CO 80021
Phone: (800) SMI-MMIC
1
http://www.sirenza.com
EDS-103585 Rev H
SIRENZA [ SIRENZA MICRODEVICES ]
