RFMD’s SZA-5044 is a high efficiency class AB Heterojunction Bipolar Transistor
(HBT) amplifier housed in a low-cost surface-mountable plastic package. This HBT
amplifier is made with InGaP on GaAs device technology and fabricated with
MOCVD for an ideal combination of low cost and high reliability. This product is spe-
cifically designed as a final or driver stage for 802.11a equipment in the
4.9GHzto5.9GHz band for a 5V supply. Optimized on-chip impedance matching cir-
cuitry provides a 50Ω nominal RF input impedance. A single external output match-
ing circuit covers the entire 4.9GHzto5.9GHz band simultaneously. The external
output match allows for load line optimization for other appli-
Optimum Technology
cations or optimized performance over narrower bands. This
Matching® Applied
product is available in a RoHS Compliant and Green package
GaAs HBT
with matte tin finish, designated by the “Z” package suffix.
GaAs MESFET
Features
802.11a 54Mb/s Class AB Per-
formance P
OUT
=22dBm at 3%
EVM, 5V, 343mA
High Gain=33dB
Output Return Loss >11dB for
Linear Tune
On-Chip Output Power Detector
P
1dB
=30dBm at 5V
Simultaneous 4.9GHz to 5.9GHz
Performance
Robust - Survives RF Input Power
=+15dBm
Power Up/Down Control <1ms,
V
PC
2.9Vto5V
InGaP HBT
SiGe BiCMOS
Si BiCMOS
SiGe HBT
GaAs pHEMT
Si CMOS
Si BJT
GaN HEMT
RF MEMS
Applications
802.11a WiFi, OFDM
5.8GHz ISM Band, 802.16
WiMAX
Parameter
Frequency of Operation
Output Power at 1dB Compression
Gain
Min.
4900
27.5
30.7
25.7
Specification
Typ.
30.2
29.0
32.7
33.0
27.7
21.0
22.0
6.3
-39.0
11.6
12.3
0.8to1.9
270
1.7
8
24
21.0
330
Max.
5900
Unit
MHz
dBm
dBm
dB
dB
dB
dBm
dBm
dB
dBc
dB
dB
V
mA
mA
uA
°C/W
dBm
mA
Condition
5.15GHz
5.875GHz
4.9GHz
5.15GHz
5.875GHz
3% EVM 802.11a 54Mb/s-5.15GHz
3% EVM 802.11a 54Mb/s-5.875GHz
5.875GHz
5.875GHz, 18dBm per tone
4.9GHzto5.875GHz
4.9GHzto5.875GHz
P
OUT
=10dBmto26dBm
V
PC
=5V (I
VPC1
+I
VPC2
+I
VPC3
)
V
PC
=0V
junction - lead
1.8% EVM 802.11ac HT80 MCS9
5.21GHz to 5.77GHz
P
OUT
=21dBm
34.7
29.7
Output Power
Noise Figure
Third Order Intermod
Worst Case Input Return Loss
Worst Case Output Return Loss
Output Voltage Range
V
CC
Quiescent Current
Power Up Control Current
Off V
CC
Leakage Current
Thermal Resistance (junction-lead
802.11ac Output power
802.11ac Operating Current
-35.0
8.6
9.3
230
310
100
Test Conditions: Z
0
=50Ω, V
CC
=5V, I
CQ
=270mA, T
BP
=25°C
RF MICRO DEVICES®, RFMD®, Optimum Technology Matching®, Enabling Wireless Connectivity™, PowerStar®, POLARIS™ TOTAL RADIO™ and UltimateBlue™ are trademarks of RFMD, LLC. BLUETOOTH is a trade-
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