201861A

DATA SHEET
SKY65094-360LF: 698-915 MHz Low-Noise Power Amplifier
Driver
Applications
• 2.5G, 3G, 4G wireless infrastructure transceivers
• ISM band transmitters
• WCS fixed wireless
• 3GPP LTE
Features
• Wideband frequency range: 698 to 915 MHz
• Low Noise Figure: 3.2 dB
• High IIP3 up to +29 dBm
• Output P1dB = +25 dBm
• High gain: +17 dB
• Single DC supply: +5 V
• Enable voltage: +3.3 V
• On-chip bias circuit
• DFN (8-pin, 2 x 2 mm) package (MSL1, 260 °C per
JEDEC J-STD-020)
Figure 1. SKY65094-360LF Functional Block Diagram
Description
Skyworks SKY65094-360LF is a high performance, ultrawideband Power Amplifier (PA) driver with superior output power,
low noise, and linearity. The device provides excellent Noise
Figure (NF) and high output power at 1 dB compression, which
makes the SKY65094-360LF ideal for use in the driver stage of
infrastructure transmit or receive chains.
The SKY65094-360LF uses low-cost Surface-Mount Technology
(SMT) in the form of an 8-pin, 2 x 2 mm Dual Flat No-Lead (DFN)
package. A functional block diagram is provided in Figure 1, and
the device package and pinout are shown in Figure 2.
Figure 2. SKY65094-360LF Pinout – 8-Pin DFN Package
(Top View)
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DATA SHEET • SKY65094-360LF PA DRIVER
Table 1. SKY65094-360LF Signal Descriptions
Pin #
Name
Description
1
GND
Ground
2
RF_IN
RF input
3
N/U
Not used (may be grounded)
4
N/U
Not used (may be grounded)
5
N/U
Not used (may be grounded)
6
ENABLE
PA enable
7
RF_OUT/BIAS
RF output/bias voltage
8
N/U
Not used (may be grounded)
Table 2. SKY65094-360LF Absolute Maximum Ratings
Parameter
Symbol
Min
Max
–0.3
Units
Supply voltage
VCC
+6.0
V
RF input power
PIN
+20
dBm
Supply current (@ P1dB
ICC
400
mA
Power dissipation (@ P1dB
PD
1.1
W
Power dissipation (@ PIN = –10 dBm)
PD
0.7
W
Operating case temperature
TC
0
+95
°C
Extended operating temperature
TEXT
–33
+95
°C
Storage temperature
TST
–55
+150
°C
Junction temperature
TJ
Thermal resistance
ΘJC
Note:
+150
°C
35
°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.
Technical Description
Electrical and Mechanical Specifications
The SKY65094-360LF is a single stage, low-noise PA that
operates with a single 5 V power supply connected through an RF
choke (inductor L1) to the output signal (pin 7). The bias current is
set by the on-chip active bias composed of current mirror and
reference voltage transistors, which allow excellent gain tracking
over temperature and voltage variations. The device is externally
RF matched using surface mount components to facilitate
operation over a frequency range of 824 to 849 MHz.
Signal pin assignments and functional pin descriptions are
described in Table 1. The absolute maximum ratings of the
SKY65094-360LF are provided in Table 2. The recommended
operating conditions are specified in Table 3 and electrical
specifications are provided in Table 4 (general specifications),
Table 5 (698-716 MHz), Table 6 (777-798 MHz), Table 7 (824849 MHz), and Table 8 (880-915 MHz).
Typical performance characteristics of the SKY65094-360LF for
the 824 to 849 MHz frequency range are illustrated in Figures 3
through 10.
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DATA SHEET • SKY65094-360LF PA DRIVER
Table 3. SKY65094-360LF Recommended Operating Conditions
Parameter
Symbol
Bias voltage
VCC
Enable voltage
VEN
Operating frequency
f
Min
Typical
Max
Units
4.75
5.00
5.25
V
3.3
V
698
915
MHz
Table 4. SKY65094-360LF Electrical Characteristics: General (Note 1)
Parameter
Quiescent current
Symbol
IcQ
Test Conditions
Min
No RF
Gain vs temperature
Typical
Max
Units
130
145
mA
+0.01
dB/°C
–0.01
0.1 dB Output Compression Point
OP0.1dB
Sweep input power
Turn-on time
Pin = –10 dBm,
Ven = 3.3 V
Stability
PIN = 0 dBm, over all
operating temperatures
+19
dBm
1
μs
Unconditional
–
Table 5. SKY65094-360LF Electrical Characteristics: 698 to 716 MHz (Note 1)
(VCC = +5 V, TC = 25 °C, CW, Unless Otherwise Noted)
Parameter
Symbol
Test Conditions
Frequency
f
Third order input intercept point
IIP3
PIN = –10 dBm/tone,
5 MHz spacing
Small signal gain
|S21|
Input return loss
|S11|
Output return loss
|S22|
Noise Figure
NF
1 dB Output Compression Point
OP1dB
Min
Typical
698
Max
716
Units
MHz
+26.5
dBm
PIN = –30 dBm
16.5
dB
PIN = –30 dBm
21
dB
PIN = –30 dBm
6.8
dB
3.3
dB
+22.7
dBm
Sweep input power
Note 1: Performance is verified by characterization. Evaluation Board input trace loss up to DC blocking capacitor = 0.06 dB. Output trace loss up to DC blocking capacitor = 0.07 dB.
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DATA SHEET • SKY65094-360LF PA DRIVER
Table 6. SKY65094-360LF Electrical Characteristics: 777 to 798 MHz (Note 1)
(VCC = +5 V, TC = 25 °C, CW, Unless Otherwise Noted)
Parameter
Symbol
Test Conditions
Frequency
f
Third order input intercept point
IIP3
PIN = –10 dBm/tone,
5 MHz spacing
Small signal gain
|S21|
Input return loss
Output return loss
Noise Figure
NF
1 dB Output Compression Point
OP1dB
Min
Typical
777
Max
Units
798
MHz
+28.8
dBm
PIN = –30 dBm
17.0
dB
|S11|
PIN = –30 dBm
21.5
dB
|S22|
PIN = –30 dBm
10
dB
3.0
dB
+23.2
dBm
Sweep input power
Note 1: Performance is verified by characterization. Evaluation Board input trace loss up to DC blocking capacitor = 0.08 dB. Output trace loss up to DC blocking capacitor = 0.10 dB.
Table 7. SKY65094-360LF Electrical Characteristics: 824 to 849 MHz, Tested to Production Screen Limits (Note 1)
(VCC = +5 V, VEN = 3.3 V, TC = 25 °C, CW, Unless Otherwise Noted)
Parameter
Symbol
Test Conditions
Min
Frequency
f
Third order Input Intercept Point
IIP3
PIN = –10 dBm/tone,
5 MHz spacing
Small signal gain
|S21|
PIN = –30 dBm
Input return loss
|S11|
PIN = –30 dBm
Output return loss
|S22|
PIN = –30 dBm
10
Noise Figure
NF
1 dB Output Compression Point
OP1dB
Typical
824
Gain vs frequency
Units
849
MHz
+27.5
+29.5
16
17
18
dB
–0.25
+0.12
+0.25
dB/20 MHz
15
23
+24.5
dBm
dB
15
3.2
Sweep input power
Max
dB
4.0
+25.5
dB
dBm
Note 1: Performance is guaranteed only under the conditions listed in this Table, and corresponds to the Bill of Materials in Table 8 for this frequency band. Evaluation Board input trace loss up
to DC blocking capacitor = 0.09 dB. Output trace loss up to DC blocking capacitor = 0.10 dB.
Table 8. SKY65094-360LF Electrical Characteristics: 880 to 915 MHz (Note 1)
(VCC = +5 V, TC = 25 °C, CW, Unless Otherwise Noted)
Parameter
Symbol
Test Conditions
Min
Typical
Units
915
MHz
Frequency
f
Third order input intercept point
IIP3
PIN = –10 dBm/tone,
5 MHz spacing
+30
dBm
Small signal gain
|S21|
PIN = –30 dBm
16.8
dB
Input return loss
|S11|
PIN = –30 dBm
20
dB
Output return loss
|S22|
PIN = –30 dBm
14
dB
Noise Figure
NF
1 dB Output Compression Point
OP1dB
880
Max
Sweep input power
3.0
dB
+25.5
dBm
Note 1: Performance is verified by characterization. Evaluation Board input trace loss up to DC blocking capacitor = 0.09 dB. Output trace loss up to DC blocking capacitor = 0.10 dB.
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DATA SHEET • SKY65094-360LF PA DRIVER
Typical Performance Characteristics (824-849 MHz)
(Based on BOM in Table 9)
Figure 3. Input Return Loss vs Frequency Over Temperature
Figure 4. Output Return Loss vs Frequency Over Temperature
Figure 5. IIP3 vs Output Power Over Temperature
Figure 6. Small Signal Gain vs Frequency Over Temperature
Figure 7. IIP3 vs Frequency Over Temperature
Figure 8. Current vs Output Power Over Temperature
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DATA SHEET • SKY65094-360LF PA DRIVER
Figure 9. OP1dB vs Frequency Over Temperature
Evaluation Board Description
The Skyworks SKY65094-360LF Evaluation Board is used to test
the performance of the SKY65094-360LF PA driver. An assembly
drawing for the Evaluation Board is shown in Figure 11 and the
layer detail is provided in Figure 12. The layer detail physical
characteristics are noted in Figure 13.
Capacitor C10 provides DC bias decoupling for the output stage
collector voltage. Pins 2 and 7 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 1 (GND) and the center ground pad provide the DC and
RF ground.
Figure 10. Noise Figure vs Ferquency Over Temperature
1. Connect a 5.0 V supply to the VCC pin and 3.3 V to the
ENABLE pin of the J3 header (see Evaluation Board assembly
drawing in Figure 11 and schematic diagram in Figure 14). If
available, enable the current limiting function of the power
supply to 500 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.
6. Take measurements.
Circuit Design Configurations
The following design considerations are general in nature and
must be followed regardless of final use or configuration.
1. Paths to ground should be made as short as possible.
2. The ground pad of the SKY65094-360LF power amplifier 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 14 with
component values for the SKY65094-360LF Evaluation Board
listed in Table 9.
Testing Procedure
Use the following procedure to set up the SKY65094-360LF
Evaluation Board for testing:
CAUTION: If any of the output signals exceed the rated
maximum values, the SKY65094-360LF Evaluation
Board can be permanently damaged.
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 SKY65094-360LF is rated to Moisture Sensitivity Level 1
(MSL1) at 260 °C. It can be used for lead or lead-free soldering.
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.
Package Dimensions
The PCB layout footprint for the SKY65094-360LF is shown in
Figure 15. Typical case markings are shown in Figure 16.
Package dimensions for the 8-pin DFN are shown in Figure 17,
and tape and reel dimensions are provided in Figure 18.
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DATA SHEET • SKY65094-360LF PA DRIVER
Figure 11. Evaluation Board Assembly Drawing
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DATA SHEET • SKY65094-360LF PA DRIVER
Layer 1: Top – Metal
Layer 2: Ground
Layer 3: Power Plane
Layer 4: Solid Ground Plane
S2497
Figure 12. Evaluation Board Layer Detail
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DATA SHEET • SKY65094-360LF PA DRIVER
Figure 13. Layer Detail Physical Characteristics
Figure 14. SKY65094-360LF Evaluation Board Schematic
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
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DATA SHEET • SKY65094-360LF PA DRIVER
Table 9. SKY65094-360LF (DFN Package) Evaluation Board Bill of Materials (1 of 2)
Component
Size
Value
Vendor
Vendor Part #
C0
0402
33 pF
Murata
GRM1555C1H330JZ01
C1
0402
4.7 nH
Murata
LQG15HS4N7S02
C2
0402
7.5 pF
Murata
C3
0402
DNI
–
–
C4
0402
DNI
–
–
C5
0402
3.3 pF
Murata
GJM1555C1H3R3BB01B
C6
0402
12 nH
Murata
LQG15HS12NJ02
698 MHz – 716 MHz
GRM1555C1H7R5CB01
C9
1206
DNI
–
C10
0402
1 μF
Murata
GRM155R61A105KE15
C11
0402
33 pF
Murata
GRM1555C1H330JZ01
J1, J2
SMA Connector
J3
Connector, 5-pin
header
L1
–
615R54-021
615R31-040
0402
18 nH
Murata
LQG15HS18NJ02
C0
0402
33 pF
Murata
GRM1555C1H330JZ01
C1
0402
4.3 nH
Murata
LQG15HS4N3S02
C2
0402
7 pF
Murata
GRM615COG070C50
C3
0402
DNI
–
–
C4
0402
DNI
–
–
C5
0402
4.7 pF
Murata
GJM1555C1H4R7BB01
C6
0402
12 nH
Murata
LQG15HS12NJ02
777 MHz – 798 MHz
C9
1206
DNI
–
C10
0402
1 μF
Murata
C11
0402
33 pF
Murata
J1, J2
SMA Connector
J3
Connector, 5-pin
header
L1
0402
18 nH
–
GRM155R61A105KE15
GRM1555C1H330JZ01
615R54-021
615R31-040
Murata
LQG15HS18NJ02
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DATA SHEET • SKY65094-360LF PA DRIVER
Table 9. SKY65094-360LF (DFN Package) Evaluation Board Bill of Materials (2 of 2)
Component
Size
Value
Vendor
Vendor Part #
C0
0402
33 pF
Murata
GRM1555C1H330JZ01
C1
0402
5.1 nH
Murata
LQG15HS5N1S02
C2
0402
6 pF
Murata
C3
0402
DNI
–
–
C4
0402
DNI
–
–
C5
0402
8.2 pF
Murata
GJM1555C1H8R2CB01
C6
0402
12 nH
Murata
LQG15HS12NJ02
824 MHz – 849 MHz
GJM1555C1H6R0BB01
C9
1206
DNI
–
C10
0402
1 μF
Murata
GRM155R61A105KE15
C11
0402
33 pF
Murata
GRM1555C1H330JZ01
J1, J2
SMA Connector
J3
Connector, 5-pin
header
L1
–
615R54-021
615R31-040
0402
18 nH
Murata
LQG15HS18NJ02
C0
0402
33 pF
Murata
GRM1555C1H330JZ01
C1
0402
4.7 nH
Murata
LQG15HS4N7S02
C2
0402
5.6 pF
Murata
GJM1555C1H5R6CB01
C3
0402
DNI
–
–
C4
0402
DNI
–
–
C5
0402
8.2 pF
Murata
GJM1555C1H8R2CB01
C6
0402
10 nH
Murata
LQG15H10NJ02
880 MHz – 915 MHz
C9
1206
DNI
–
C10
0402
1 μF
Murata
C11
0402
33 pF
Murata
J1, J2
SMA Connector
J3
Connector, 5-pin
header
L1
0402
18 nH
–
GRM155R61A105KE15
GRM1555C1H330JZ01
615R54-021
615R31-040
Murata
LQG15HS18NJ02
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DATA SHEET • SKY65094-360LF PA DRIVER
Figure 15. SKY65094-360LF PCB Layout Footprint
Figure 16. Typical Case Markings
(Top View)
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DATA SHEET • SKY65094-360LF PA DRIVER
Figure 17. SKY65094-360LF (8-Pin DFN) Package Dimensions
Figure 18. SKY65094-360LF Tape and Reel Dimensions
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
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DATA SHEET • SKY65094-360LF PA DRIVER
Ordering Information
Model Name
SKY65094-360LF Low-Noise PA Driver
Ordering Part Number
SKY65094-360LF
Evaluation Board Part Number
698 to 716 MHz: TW18-D530-001
777 to 798 MHz: TW18-D530-011
824 to 849 MHz: TW18-D530-021
880 to 915 MHz: TW18-D530-031
Copyright © 2012 Skyworks Solutions, Inc. All Rights Reserved.
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