201611B

DATA SHEET
SKY65173-70LF: 869-960 MHz Low-Noise Linear Power
Amplifier Driver
Applications
• 2.5G, 3G, and 4G transceivers
• ISM band transceivers
• WCS fixed wireless
• 3GPP LTE
Features
• Wideband frequency range: 869 to 960 MHz
• Low Noise Figure: < 2.6 dB typical
• High IIP3: > +44 dBm typical
• Output P1dB: +26.5 dBm typical
• High gain: > 16.5 dB typical
• Single DC supply: +5 V
• On-chip bias circuit
• SOT-89 (4-pin, 2.4 x 4.5 mm) package (MSL1, 260 °C per
JEDEC J-STD-020)
Figure 1. SKY65173-70LF Functional Block Diagram
Description
Skyworks SKY65173-70LF is a high performance, wideband, lownoise, highly linear Power Amplifier (PA) driver. The device
provides a 2.6 dB Noise Figure (NF) and an output power at 1 dB
compression of +26.5 dBm, making the SKY65173-70LF ideal for
use in the driver stage of infrastructure transmit chains.
The SKY65173-70LF uses low-cost Surface-Mount Technology
(SMT) in the form of a 4-pin, 2.4 x 4.5 mm Small Outline
Transistor (SOT-89) package. A functional block diagram is
provided in Figure 1 and the device package and pinout are
shown in Figure 2.
Figure 2. SKY65173-70LF Pinout – 4-Pin SOT-89 Package
(Top View)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
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DATA SHEET • SKY65173-70LF PA DRIVER
Table 1. SKY65173-70LF Signal Descriptions
Pin #
Name
Description
1
RF_IN
RF input
2
GND
Ground
3
RF_OUT
RF output
4
GND
Ground
Table 2. SKY65173-70LF Absolute Maximum Ratings
Parameter
Symbol
Min
Max
Units
Supply voltage
VCC
6
V
RF input power
PIN
+10
dBm
Supply current
ICC
300
mA
Power dissipation
PD
1.7
W
Operating case temperature
TC
–40
+85
°C
Storage temperature
TST
–55
+125
°C
Junction temperature
TJ
Thermal resistance
ΘJC
Note:
+150
°C
29
°C/W
Exposure to maximum rating conditions for extended periods may reduce device reliability. There is no damage to device with only one parameter set at the limit and all other
parameters set at or below their nominal values. Exceeding any of the limits listed here may result in permanent damage to the device.
CAUTION: Although this device is designed to be as robust as possible, Electrostatic Discharge (ESD) can damage this device. This device
must be protected at all times from ESD. Static charges may easily produce potentials of several kilovolts on the human body
or equipment, which can discharge without detection. Industry-standard ESD precautions should be used at all times.
Table 3. SKY65173-70LF Recommended Operating Conditions
Parameter
Symbol
Min
Typical
Max
Units
4.75
5.0
5.5
V
1000
MHz
+85
°C
Supply voltage
VCC
Operating frequency
f
850
Operating case temperature
TC
–40
Electrical and Mechanical Specifications
Signal pin assignments and functional pin descriptions are
described in Table 1. The absolute maximum ratings of the
SKY65173-70LF are provided in Table 2. The recommended
operating conditions are specified in Table 3 and electrical
specifications are provided in Table 4.
+25
Typical performance characteristics of the SKY65173-70LF are
illustrated in Figures 3 to 13.
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DATA SHEET • SKY65173-70LF PA DRIVER
Table 4. SKY65173-70LF Electrical Characteristics (Note 1)
(VCC = +5 V, TC = 25 °C, f = 920 MHz, Unless Otherwise Noted)
Parameter
Symbol
Test Conditions
Min
Typical
Max
Units
869
920
960
MHz
Frequency
f
Quiescent current
ICCQ
Operational current
IOP
Input return loss
|S11|
10
13
Small signal gain
|S21|
15.0
16.5
Output return loss
|S22|
10
15
dB
Third Order Output Intercept Point
OIP3
+41
+44
dBm
Noise Figure
NF
1 dB compression point
P1dB
130
@P1dB
PIN = –10 dBm,
1 MHz spacing
156
185
mA
235
300
mA
2.6
+25.5
dB
17.5
3.0
+26.5
dB
dB
dBm
Note 1: Performance is guaranteed only under the conditions listed in this Table.
Typical Performance Characteristics
(VCC = +5 V, TC = 25 °C, f = 920 MHz, Characteristic Impedance [Zo] = 50 Ω, Unless Otherwise Noted)
Figure 3. Operational Current vs Output Power Over Supply
Voltage
Figure 4. Operational Current vs Output Power Over Temperature
Figure 5. Gain vs Output Power Over Supply Voltage
Figure 6. Gain vs Output Power Over Frequency
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
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DATA SHEET • SKY65173-70LF PA DRIVER
Figure 7. Gain vs Output Power Over Temperature
Figure 8. Input Return Loss vs Frequency Over Supply Voltage
Figure 9. Input Return Loss vs Frequency Over Temperature
Figure 10. Output Return Loss vs Frequency Over Supply Voltage
Figure 11. Output Return Loss vs Frequency Over Temperature
Figure 12. OIP3 vs Output Power Over Supply Voltage
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DATA SHEET • SKY65173-70LF PA DRIVER
Figure 13. OIP3 vs Output Power Over Temperature
Evaluation Board Description
Testing Procedure
The Skyworks SKY65173-70LF Evaluation Board is used to test
the performance of the SKY65173-70LF PA driver. An assembly
drawing for the Evaluation Board is shown in Figure 14 and the
layer detail is provided in Figure 15. The layer detail physical
characteristics are noted in Figure 16.
Use the following procedure to set up the SKY65173-70LF
Evaluation Board for testing:
As shown in Figure 17, capacitors C7, C8, and C9 provide DC bias
decoupling for VCC. Pins 1 and 3 are the RF input and output
signals, respectively. External DC blocking is required on the input
and output, but can be implemented as part of the RF matching
circuit. Pin 2 and the package backside metal, pin 4, are ground
pins that provide the DC and RF ground, respectively.
1. Connect a 5.0 V supply to VCC. If available, enable the current
limiting function of the power supply to 400 mA.
2. Connect a signal generator to the RF signal input port. Set it to
the desired RF frequency at a power level of –15 dBm or less
to the Evaluation Board but do NOT enable the RF signal.
3. Connect a spectrum analyzer to the RF signal output port.
4. Enable the power supply.
5. Enable the RF signal.
Circuit Design Considerations
6. Take measurements.
The following design considerations are general in nature and
must be followed regardless of final use or configuration.
CAUTION: If any of the output signals exceed the rated
maximum values, the SKY65173-70LF Evaluation
Board can be permanently damaged.
1. Paths to ground should be made as short as possible.
2. The ground pad of the SKY65173-70LF PA has special
electrical and thermal grounding requirements. This pad is the
main thermal conduit for heat dissipation. Since the circuit
board acts as the heat sink, it must shunt as much heat as
possible from the amplifier. As such, design the connection to
the ground pad to dissipate the maximum wattage produced
to the circuit board. Multiple vias to the grounding layer are
required.
NOTE: Junction temperature (TJ) of the device increases with a
poor connection to the slug and ground. This reduces the
lifetime of the device.
A suggested matching circuit is shown in Figure 17. Component
values for the SKY65173-70LF Evaluation Board are listed in
Table 5.
Package and Handling Information
Instructions on the shipping container label regarding exposure to
moisture after the container seal is broken must be followed.
Otherwise, problems related to moisture absorption may occur
when the part is subjected to high temperature during solder
assembly.
The SKY65173-70LF is rated to Moisture Sensitivity Level 1
(MSL1) at 260 °C. It can be used for lead or lead-free soldering.
For additional information, refer to the Skyworks Application Note,
Solder Reflow Information, document number 200164.
Care must be taken when attaching this product, whether it is
done manually or in a production solder reflow environment.
Production quantities of this product are shipped in a standard
tape and reel format.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
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DATA SHEET • SKY65173-70LF PA DRIVER
Package Dimensions
Package dimensions for the 4-pin SOT-89 are shown in
Figure 18, and tape and reel dimensions are provided in
Figure 19.
Figure 14. Evaluation Board Assembly Drawing
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
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DATA SHEET • SKY65173-70LF PA DRIVER
Figure 15. Evaluation Board Layer Detail
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
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DATA SHEET • SKY65173-70LF PA DRIVER
Figure 16. Layer Detail Physical Characteristics
Figure 17. SKY65173-70LF Evaluation Board Schematic
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DATA SHEET • SKY65173-70LF PA DRIVER
Table 5. SKY65173-70LF Evaluation Board Bill of Materials
Component
Size
Value
Vendor
C1
0402
4.3 nH
Murata
C2
0402
4.3 pF
Johanson
C3
0402
DNI
–
C4
0402
DNI
–
C5
0402
4.3 pF
Johanson
C6
0402
5.1 nH
Murata
C7
1206
1 μF
–
C8
0402
DNI
–
C9
0402
1000 pF
–
L2
0402
8.2 nH
Murata
R1
0402
0Ω
–
Notes
Wire wound, hi-Q inductor, ±0.1 nH tolerance
Wire wound, hi-Q capacitor, low ESR, ±0.1 pF tolerance
Wire wound, hi-Q capacitor, low ESR, ±0.1 pF tolerance
Wire wound, hi-Q inductor, ±0.1 nH tolerance
Ceramic capacitor, 10% tolerance
Ceramic capacitor, 10% tolerance
Wire wound, hi-Q inductor, 2% tolerance
Figure 18. SKY65173-70LF (4-Pin SOT-89) Package Dimensions
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
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DATA SHEET • SKY65173-70LF PA DRIVER
Figure 19. SKY65173-70LF Tape and Reel Dimensions
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DATA SHEET • SKY65173-70LF PA DRIVER
Ordering Information
Model Name
SKY65173-70LF Low-Noise PA Driver
Ordering Part Number
SKY65173-70LF
Evaluation Board Part Number
TW13-D280
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