The information provided herein is believed to be reliable at press time. Sirenza Microdevices assumes no responsibility for inaccuracies 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 http://www.sirenza.com
1 EDS-103989 Rev D
Preliminary
Sirenza Microdevices’ SZA-3044 is a high linearity 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 specifically
designed as a final or driver stage for 802.16 equipment in
the 3.3-3.8 GHz bands. It can run from a 3V to 6V supply.
Optimized on-chip impedance matching circuitry provides a
50 nominal RF input impedance. The external output
match and bias adjustability allows load line optimization
for other applications or over narrower bands. It features an
output power detector, on/off power control and high RF
overdrive robustness. This product is available in a RoHS
Compliant and Green package with matte tin finish, desig-
nated by the “Z” package suffix.
Key Specifications
Symbol Parameters: Test Conditions, App circuit page 6
Z0 = 50, VCC = 5.0V, Iq = 220mA, TBP = 30ºC Unit Min. Typ. Max.
fOFrequency of Operation MHz 2700 3800
P1dB Output Power at 1d B Co mpression – 3.3GHz dBm 29.5 31.0
Output Power at 1dB Compression – 3.6GHz 28.5 30.0
S21 Small Signal Gain – 3.4GHz dB 23 25 27
Small Signal Gain – 3.6GHz 22 24 26
Pout Output power at 2.5% EVM 802. 11a 54Mb/s - 3.4GHz dBm 24
IM3 Third Order Suppression (Pout=20dBm per tone) - 3.6GHz dBc -40 -37
NF Noise Figure at 3.6 GHz dB 5.0
IRL Worst Case Input Return Loss 3.3-3.8GHz dB 12 15
ORL Worst Case Output Return Loss 3.3-3.6GHz 7 10
Vdet Range Output Voltage Range for Pout=+15dBm to +30dBm V 0.9 to 2.1
Icq Quiescent Current (Vcc = 5V) mA 185 220 255
IVPC Power Up Control Current, Vpc=5V, ( IVPC1 + IVPC2 ) mA 2.7
ILEAK Off Vcc Leakage Current Vpc=0V uA 10 100
Rth, j-l Thermal Resistance (junction - lead) ºC/W 22
Functional Block Diagram
SZA-3044 / SZA-3044Z
2.7-3.8GHz 5V 1W Power Amplifier
Product Features
Applications
P1dB = 31dBm @ 5V
802.11 a 54Mb/s 2.5% EVM Performance
Pout = 24dBm, Vcc=5V, 340mA, PAE 14.5%
Pout = 25dBm, Vcc=6V, 365mA, PAE 14.5%
On-chip Output Power Detector
Robust - Survives RF Input Power = +15dBm
On Chip ESD Protection Class 2 (2000V)
Power up/down control < 1µs
Pin compatible with SZA-2044 and SZA-5044
802.16 WiMAX Driver or Output St age
Fixed Wireless, WLL
Product Description
4mm x 4mm QFN Package
RFIN RFOUT
Vcc
Power Detector Vout
Active
Bias Active
Bias
Power
Up/Down
Control
Pb
RoHS Compliant
& PackageGreen
303 South Technology Court Broomfield, CO 80021 Phone: (800) SMI-MMIC http://www.sirenza.com
2 EDS-103989 Rev D
Preliminary
SZA-3044 2.7-3.8 GHz 5V Power Amp
Pin Out Description
Pin # Function Description
1,2,4,5,7,
9,11,13,1
5,17,19 N/C These are unused pins and not wired inside the package. They may be grounded or connected to adjacent pins.
6VPC1
VPC1 is the bias control pin for the stage 1 active bias circuit. An external series resistor is required for proper
setting of bias levels. Refer to th e evaluation board sche matic for resistor value. To prevent potential damage, do
not apply voltage to this pin that is +1V greater than voltage applied to pin 20 (Vbias) unless Vpc supply current
capability is less than 10 mA.
8VPC2
VPC2 is the bias control pin for the stage 2 active bias circuit. An external series resistor is required for proper
setting of bias levels. Refer to th e evaluation board sche matic for resistor value. To prevent potential damage, do
not apply voltage to this pin that is +1V greater than voltage applied to pin 20 (Vbias) unless Vpc supply current
capability is less than 10 mA.
10 Vdet Output power detecto r voltage. Load with > 10K ohms for best performance
3 RFIN RF input pin. This is DC grounded internal to the IC. Do not apply voltage to this pin.
12,14 RFOUT RF output pin. This is also another conne ction to the 2nd stage colle ctor.
16 VC2 2nd stage collector bias pin. Apply 3.0 to 5.0V to this pin.
18 VC1 1st stage collector bias pin. Apply 3.0 to 5.0V to this pin.
20 Vbias Active bias network VCC. Apply 3.0 to 5.0V to this pin.
EPAD Gnd Exposed area on the bottom side of the package needs to be soldered to the ground plane of the board for opti-
mum thermal and RF performance. Several vias should be located under the EPAD as shown in the recom-
mended land pattern (page 5).
Caution: ESD Sensitive
Appropriate precaution in handling, packaging
and testing devices must be observed.
Absolute Maximum Ratings
Parameters Value Unit
VC2 Collector Bias Current (IVC2) 600 mA
VC1 Collector Bias Current (IVC1) 300 mA
Device Voltage (VD)7.0V
Power Dissipation 3.5 W
Operating Lead Temperature (TL) -40 to +85 ºC
Max RF Input Power for 50 ohm output
load 15 dBm
Max RF Input Power for 10:1 VSWR RF
out load 8dBm
Storage Temperature Range -40 to +150 ºC
Operating Junction Temperature (TJ) +150 ºC
ESD Human Body Model 2000 V
Operation of this device beyond any one of these limits may
cause permanent damage. For reliable continuous operation
the device voltage and current must not exceed the maximum
operating values specified in the table on page one.
Bias conditions should also satisfy the following expression:
IDVD < (TJ - TL) / RTH’ j-l
Simplified Device Schematic
Stage 1
Bias Stage 2
Bias
Pin 3 Pin 12, 14
Pin
20 Pin
6Pin
18 Pin
8Pin
16
Pin
10
EPAD EPAD
303 South Technology Court Broomfield, CO 80021 Phone: (800) SMI-MMIC http://www.sirenza.com
3 EDS-103989 Rev D
Preliminary
SZA-3044 2.7-3.8 GHz 5V Power Amp
Typica l Performance, 3.4-3.7GHz Application Circuit (Vcc=5V, Icq=360mA, 802.1 1a 54Mb/s 64QAM)*
Parameter Units 3.4GHz 3.5GHz 3.6GHz 3.7GHz 3.8GHz
Gain @ Pout=24dBm dB - - 24.5 24.2 23.6 22.7 21.5
P1dB dBm - - 31.5 31.5 31.0 31.0 30.0
Pout @ 2.5% EVM* dBm - - 23.5 23.5 24.0 23.5 23.0
I @ Pout 2.5% EVM* mA - - 445 450 450 450 433
Typica l Performance, 3.2-3.6GHz 6V Application Circuit (Vcc=6V, Icq=220mA, 802.11a 54Mb/s 64QAM)*
Parameter Units 3.3GHz 3.4GHz 3.5GHz 3.6GHz 3.7GHz
Gain @ Pout=24dBm dB - 25.6 25.6 25.1 24.1 23.2 -
P1dB dBm - 32.5 32.0 32.0 31.5 31.5 -
Pout @ 2.5% EVM* dBm - 25 25 25 24.5 24.5 -
I @ Pout 2.5% EVM* mA - 370 365 363 356 355 -
Typica l Performance, 3.2-3.6GHz Application Circuit (Vcc=5V, Icq=220mA, 802.1 1a 54Mb/s 64QAM)*
Parameter Units 3.2GHz 3.3GHz 3.4GHz 3.5GHz 3.6GHz 3.7GHz
Gain @ Pout=24dBm dB 25.7 25.6 25.5 25.2 24.3 23.4 -
P1dB dBm 31.0 31.0 30.5 30.0 30.0 29.5 -
Pout @ 2.5% EVM* dBm 23.5 24.0 24.0 23.5 23.0 23.0 -
I @ Pout 2.5% EVM* mA 331 340 339 330 327 325 -
Typical Perfo rmance, 2.7-3.0GHz App lication Cir cuit (Vcc=5V, Icq=360mA, 802.11a 54Mb/s 64QAM)*
Parameter Units 2.7GHz 2.8GHz 2.9GHz 3.0GHz
Gain @ Pout=24dBm dB 25.3 25.3 25.3 25.2 - - -
P1dB dBm 31 31 31 31 - - -
Pout @ 2.5% EVM* dBm 23 23.5 23.5 23.5 - - -
I @ Pout 2.5% EVM* mA 438 453 450 444 - - -
* See 3.0-3.6GHz Application Circuit, pg. 7.
* Contact Applications Engineering for details about application circuit.
* Contact Applications Engineering for details about application circuit.
* Optimized for maximum Pout @ 2.5% EVM over 3.4-3.7GHz band. Same applicatio n circuit from Rev. B
datasheet. Contact Applications Engineering for details.
303 South Technology Court Broomfield, CO 80021 Phone: (800) SMI-MMIC http://www.sirenza.com
4 EDS-103989 Rev D
Preliminary
SZA-3044 2.7-3.8 GHz 5V Power Amp
Measured 3.2 - 3.6 GHz Application Circuit Data (Vcc = Vpc = 5.0V, Iq = 220mA, T=25C)
EVM vs Pout, F=3.4GHz
802.11g, OFDM, 54Mb/s, 64QAM
0
1
2
3
4
5
6
10 12 14 16 18 20 22 24 26
Pout(dBm)
EVM(%)
-40C -20C 0C +25C +70C +85C
EVM vs Pout, F=3.6GHz
802.11g, OFDM, 54Mb/s, 64QAM
0
1
2
3
4
5
6
10 12 14 16 18 20 22 24 26
Pout(dBm)
EVM(%)
-40C -20C 0C +25C +70C +85C
EVM vs Pout, F=3.3GHz
802.11g, OFDM, 54Mb/s, 64QAM
0
1
2
3
4
5
6
10 12 14 16 18 20 22 24 26
Pout(dBm)
EVM(%)
-40C -20C 0C +25C +70C +85C
IM3 vs Pout (2 tone avg.), T=25C
Tone Spacing=1MHz
-60
-55
-50
-45
-40
-35
-30
12 14 16 18 20 22 24 26 28
Pout(dBm)
IM3(dBc)
3.3GHz 3.4GHz 3.6GHz
Gain vs Pout, T=25C
22
23
24
25
26
27
28
12 14 16 18 20 22 24 26 28 30 32
Pout(dBm)
Gain(dB)
3.3GHz 3.4GHz 3.6GHz
Gain vs Pout
F=3.4GHz
22
23
24
25
26
27
28
12 14 16 18 20 22 24 26 28 30 32
Pout(dBm)
Gain(dB)
-40C -20C 0C +25C +70C +85C
303 South Technology Court Broomfield, CO 80021 Phone: (800) SMI-MMIC http://www.sirenza.com
5 EDS-103989 Rev D
Preliminary
SZA-3044 2.7-3.8 GHz 5V Power Amp
Measured 3.2 - 3.6 GHz Application Circuit Data (Vcc = Vpc = 5.0V, Iq = 220mA, T=25C)
Narrowband S11 - Input Return Loss
-30
-25
-20
-15
-10
3.3 3.4 3.5 3.6 3.7 3.8
Frequency(GHz)
S11(dB)
-40C -20C 0C +25C +70C +85C
Narrowband S12 - Reverse Isolation
-70
-65
-60
-55
-50
-45
-40
-35
-30
3.3 3.4 3.5 3.6 3.7 3.8
Frequency(GHz)
S12(dB)
-40C -20C 0C +25C +70C +85C
Narrowband S21 - Forward Gain
20
22
24
26
28
30
3.3 3.4 3.5 3.6 3.7 3.8
Frequency(GHz)
S21(dB)
-40C -20C 0C +25C +70C +85C
Narrowband S22 - Output Return Loss
-15
-10
-5
0
3.3 3.4 3.5 3.6 3.7 3.8
Frequency(GHz)
S22(dB)
-40C -20C 0C +25C +70C +85C
DC Supply Current (Idc) vs Pout, T=25C
0.2
0.3
0.4
0.5
0.6
0.7
11 13 15 17 19 21 23 25 27 29 31
Pout(dBm)
Idc(A)
3.3GHz 3.4GHz 3.6GHz
Noise Figure (NF) vs Frequency
3.0
3.5
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
3.3 3.4 3.5 3.6 3.7 3.8
Frequency(GHz)
NF(dB)
-40C +25C +85C
303 South Technology Court Broomfield, CO 80021 Phone: (800) SMI-MMIC http://www.sirenza.com
6 EDS-103989 Rev D
Preliminary
SZA-3044 2.7-3.8 GHz 5V Power Amp
Measured 3.2 - 3.6 GHz Application Circuit Data (Vcc = Vpc = 5.0V, Iq = 220mA, T=25C)
Broadban d S11 - Inpu t Return Loss
-25
-20
-15
-10
-5
0
0123456
Frequency(GHz)
S11(dB)
-40C -20C 0C +25C +70C +85C
Broadband S12 - Reverse Isolation
-80
-70
-60
-50
-40
-30
-20
-10
0
0123456
Frequency(GHz)
S12(dB)
-40C -20C 0C +25C +70C +85C
Broadband S21 - Forward Gain
0
5
10
15
20
25
30
0123456
Frequency(GHz)
S21(dB)
-40C -20C 0C +25C +70C +85C
Broadband S22 - Output Return Loss
-15
-10
-5
0
0123456
Frequency(GHz)
S22(dB)
-40C -20C 0C +25C +70C +85C
RF Power Detector (Vdet) vs Pout, T=25C
0.7
0.9
1.1
1.3
1.5
1.7
1.9
2.1
2.3
2.5
11 13 15 17 19 21 23 25 27 29 31
Pout(dBm)
Vdet(V)
3.3GHz 3.4GHz 3.6GHz
RF Power Detector (Vdet) vs Pout
F=3.4GHz
0.7
0.9
1.1
1.3
1.5
1.7
1.9
2.1
2.3
2.5
11 13 15 17 19 21 23 25 27 29 31
Pout(dBm)
Vdet(V)
-40C -20C 0C +25C +70C +85C
303 South Technology Court Broomfield, CO 80021 Phone: (800) SMI-MMIC http://www.sirenza.com
7 EDS-103989 Rev D
Preliminary
SZA-3044 2.7-3.8 GHz 5V Power Amp
R4
R1
R2
SZA3044
C4
R3
C6
C3
C1
C5
R5
C2
C7
3.2-3.6 GHz Application Circu it F or Vcc = V+ = Vpc = 5.0V
3.2-3.6 GHz Evalua tion Boar d Lay out Fo r Vcc = V+ = Vpc = 5. 0V
Board material GETEK, 10mil thick, Dk=3.9, 2 oz. copper
Note: R5 jumper is required to achieve
specified performance. Do not omit. It
provides 0.6nH of induct ance.
303 South Technology Court Broomfield, CO 80021 Phone: (800) SMI-MMIC http://www.sirenza.com
8 EDS-103989 Rev D
Preliminary
SZA-3044 2.7-3.8 GHz 5V Power Amp
Package Outline Drawing (dimensio ns in mm): Refer to package outlline drawing for more detail.
LOT ID
SZA3044
SZA-3044 - 85/15 Sn/Pb plating
SZA-3044Z - Matte Sn plating
Part Number Ordering Information
Part Number Reel Size Devices/Reel
SZA-3044 13” 3000
SZA-3044Z 13” 3000
Part Symbolization
The part will be symbolized with an “SZA-3044” for
Sn/Pb plating or “SZA-3044Z” for RoHS green compli-
ant product. Marking designator will be on the top sur-
face of the package.
Recommended Land Pattern (dimensions in mm[in]): Recommended PCB Soldermask (SMOBC) for landing
pattern (dimensions in mm[in]):