200960G

DATA SHEET
SKY65045-70LF: 390 – 1500 MHz Low-Noise Power Amplifier
Driver
Applications
Description
• UHF television
Skyworks SKY65045-70LF is a high performance, ultra-wideband
Power Amplifier (PA) driver with superior output power, low noise,
linearity, and efficiency. The device provides a 1.6 dB Noise
Figure (NF) and an output power at 1 dB compression of
+25 dBm, making the SKY65045-70LF ideal for use in the driver
stage of infrastucture transmit chains.
• TETRA radio
• GSM, AMPS, PCS, DCS, 2.5G, 3G
• ISM band transmitters
• Fixed WCS
• 802.16 WiMAX
• 3GPP Long Term Evolution
Features
• Wideband frequency range: 390 to 1500 MHz
• Low Noise Figure: 1.8 dB
The SKY65045-70LF is fabricated with Skyworks high reliability
Heterojunction Bipolar Transistor (HBT) process. The device uses
low-cost Surface-Mount Technology (SMT) in the form of a 2.4 x
4.5 mm Small Outline Transistor (SOT-89) package. The module
can operate over a temperature range of –40 °C to +85 °C. A
populated Evaluation Board is available upon request.
The device package and pinout are shown in Figure 1. A
functional block diagram is provided in Figure 2.
• High linearity OIP3: +37.5 dBm
• OP1dB = +25 dBm
• High gain: 14 dB
• Single DC supply: +5 V
• On-chip bias circuit
• SOT-89 (4-pin 2.4 x 4.5 mm) Pb-free package (MSL1, 260 °C
per JEDEC J-STD-0-20)
Figure 1. SKY65045-70LF Pinout – 4-Pin SOT-89 Package
(Top View)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
200960G • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • August 28, 2012
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PRELIMINARY DATA SHEET • SKY65045-70LF PA DRIVER
Figure 2. SKY65045-70LF Block Diagram
Technical Description
The SKY65045-70LF is a single stage, low noise PA in a low-cost
surface mount package. The device operates with a single +5 V
power supply connected though an RF choke (L1) to the output
pin. Capacitors C7, C8, and C9 provide DC bias decoupling for
VCC.
The bias current is set by the on-chip active bias composed of
current mirror and reference voltage transistors, allowing for
excellent gain tracking over temperature and voltage variations.
The part is externally RF matched using surface mount
components to facilitate operation over a frequency range of
390 MHz to 1500 MHz.
Pin 1 is the RF input and pin 3 is the RF output. External DC
blocking is required for both input and output, but can be
implemented as part of the RF matching circuit. Pin 2 and the
package backside metal, pin 4, provide the DC and RF ground.
Electrical and Mechanical Specifications
Signal pin assignments and functional pin descriptions for the
SKY65045 are provided in Table 1. The absolute maximum
ratings are provided in Table 2, and the recommended operating
conditions in Table 3. Electrical characteristics for the SKY65045
are provided in Table 4.
Typical performance characteristics of the SKY65045 are
illustrated in Figures 3 through 61 and in Tables 5 through 10.
The board layout footprint for the SKY65045-70LF is shown in
Figure 66. Package dimensions for the 4-pin SOT-89 are shown
in Figure 67, and tape and reel dimensions are shown in
Figure 68.
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 SKY65045 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.
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PRELIMINARY DATA SHEET • SKY65045-70LF PA DRIVER
Table 1. SKY65045 Signal Descriptions
Pin #
Name
Description
1
RF_IN
RF input
2
GND
Ground
3
RF_OUT
RF output
4
GND
Ground
Table 2. SKY65045 Absolute Maximum Ratings
(TA = +25 °C, Unless Otherwise Noted)
Parameter
Symbol
Min
Typical
Max
RF output power
POUT
Supply voltage
VCC
6
V
Supply current
ICC
215
mA
Power dissipation
PD
1.3
W
Operating case temperature
TC
–40
+85
°C
Storage temperature
TST
–55
+125
°C
Junction temperature
TJ
150
°C
Note:
+27
Units
dBm
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.
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. SKY65045 Recommended Operating Conditions
Parameter
Symbol
Min
Supply voltage
VCC
Frequency range
f
390
Operating case temperature
TC
–40
Typical
Max
Units
5
5.5
V
1500
MHz
+85
°C
+25
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PRELIMINARY DATA SHEET • SKY65045-70LF PA DRIVER
Table 4. SKY65045 Electrical Characteristics (Note 1)
(VCC = 5.0 V, Output Impedance = 50 Ω, TC = 25 °C, Unless Otherwise Noted)
Parameter
Symbol
Test Conditions
Min
Typical
Max
Units
697
747
797
MHz
Test Frequency = 747 MHz
Frequency
f
Small signal gain
G
PIN = –15 dBm
15
dB
Input return loss
S11
PIN = –15 dBm
9
dB
Output return loss
S22
PIN = –15 dBm
8
dB
Reverse transmission loss
S12
PIN = –15 dBm
23
dB
Output power @ 1 dB compression
P1DB
CW
+24
dBm
Operating current
ICC
POUT = +17 dBm
70
mA
Operating current
ICC_P1DB
@ P1dB
132
mA
Power-added efficiency
PAE
@ P1dB
35
%
Input 3rd Order Intercept Point
IIP3
PIN/tone = –10 dBm,
ΔF = 1 MHz
+29
dBm
Output 3rd Order Intercept Point
OIP3
POUT/tone = +8 dBm,
ΔF = 1 MHz
+44
dBm
Noise Figure
NF
Small signal
1.9
dB
Quiescent current
ICCQ
No RF
47
mA
Test Frequency = 897.5 MHz
Frequency
f
Small signal gain
G
PIN = –15 dBm
880.0
897.5
915.0
MHz
13
14
16
dB
Input return loss
S11
Output return loss
S22
PIN = –15 dBm
12.2
10.0
dB
PIN = –15 dBm
19.5
10.0
dB
Reverse transmission loss
S12
PIN = –15 dBm
21
15
dB
Output power @ 1 dB compression
P1DB
CW
Operating current
ICC
POUT = +17 dBm
61
90
mA
Operating current
ICC_P1DB
@ P1dB
133
180
mA
Power-added efficiency
PAE
@ P1dB
Output 3rd Order Intercept Point
OIP3
POUT/tone = +17 dBm,
ΔF = 1 MHz
Noise Figure
NF
Small signal
1.8
2.4
dB
Quiescent current
IQ
No RF
46
60
mA
+22.5
+36.0
+25.0
dBm
45
%
+37.5
dBm
Note 1: Performance is guaranteed only under the conditions listed in this Table.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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Typical Performance Data
(VCC = 5 V, f = 747 MHz, CW, Output Impedance = 50 Ω, TC = 25 °C, Unless Otherwise Noted)
Figure 3. Small Signal Gain vs Frequency Over VCC
Figure 4. Small Signal Gain vs Frequency Over Temperature
Figure 5. Input Return Loss vs Frequency Over VCC
Figure 6. Input Return Loss vs Frequency Over Temperature
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PRELIMINARY DATA SHEET • SKY65045-70LF PA DRIVER
Figure 7. Output Return Loss vs Frequency Over VCC
Figure 8. Output Return Loss vs Frequency Over Temperature
Figure 9. Reverse Transmission Loss vs Frequency Over VCC
Figure 10. Reverse Transmission Loss vs Frequency Over
Temperature
Figure 11. P1dB vs Frequency Over VCC
Figure 12. P1dB vs Frequency Over Temperature
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Figure 13. Noise Figure vs Frequency Over VCC
Figure 14. Noise Figure vs Frequency Over Temperature
Figure 15. Gain vs Output Power Over VCC
Figure 16. PAE vs Output Power Over VCC
Figure 17. Gain vs Output Power Over Temperature
Figure 18. PAE vs Output Power Over Temperature
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PRELIMINARY DATA SHEET • SKY65045-70LF PA DRIVER
Figure 19. Gain vs Output Power Over Frequency
Figure 20. PAE vs Output Power Over Frequency
Figure 21. IIP3 vs Input Power Over VCC
Figure 22. OIP3 vs Output Power Over VCC
Figure 23. IIP3 vs Input Power Over Temperature
Figure 24. OIP3 vs Output Power Over Temperature
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Figure 25. IIP3 vs Input Power Over Frequency
Figure 26. OIP3 vs Output Power Over Frequency
Figure 27. PAE @ P1dB vs Frequency Over VCC
Figure 28. PAE @ P1dB vs Frequency Over Temperature
Figure 29. Operating Current @ P1dB vs Frequency Over VCC
Figure 30. Operating Current @ P1dB vs Frequency Over
Temperature
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PRELIMINARY DATA SHEET • SKY65045-70LF PA DRIVER
Figure 31. Gain Flatness vs VCC Over Temperature
Figure 32. Quiescent Current vs VCC Over Temperature
Figure 33. Operating Current vs Output Power Over VCC
Figure 34. Operating Current vs Output Power Over Temperature
Figure 35. Operating Current vs Output Power Over Frequency
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Typical Performance Data
(VCC = 5 V, f = 897.5 MHz, CW, Output Impedance = 50 Ω, TC = 25 °C, Unless Otherwise Noted)
Figure 36. Small Signal Gain vs Frequency Over VCC
Figure 37. Small Signal Gain vs Frequency Over Temperature
Figure 38. Input Return Loss vs Frequency Over VCC
Figure 39. Input Return Loss vs Frequency Over Temperature
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PRELIMINARY DATA SHEET • SKY65045-70LF PA DRIVER
Figure 40. Output Return Loss vs Frequency Over VCC
Figure 41. Output Return Loss vs Frequency Over Temperature
Figure 42. Reverse Transmission Loss vs Frequency Over VCC
Figure 43. Reverse Transmission Loss vs Frequency Over
Temperature
Figure 44. P1dB vs Frequency Over VCC
Figure 45. P1dB vs Frequency Over Temperature
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Figure 46. Noise Figure vs Frequency Over VCC
Figure 47. Noise Figure vs Frequency Over Temperature
Figure 48. Gain vs Output Power Over VCC
Figure 49. OIP3 vs Output Power/Tone Over VCC
Figure 50. Gain vs Output Power Over Temperature
Figure 51. OIP3 vs Output Power/Tone Over Temperature
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PRELIMINARY DATA SHEET • SKY65045-70LF PA DRIVER
Figure 52. Gain vs Output Power Over Frequency
Figure 53. OIP3 vs Output Power/Tone Over Frequency
Figure 54. PAE vs Output Power Over VCC
Figure 55. PAE vs Output Power Over Temperature
Figure 56. PAE vs Output Power Over Frequency
Figure 57. Operating Current vs Output Power Over VCC
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Figure 58. Operating Current vs Output Power Over Temperature
Figure 59. Operating Current vs Output Power Over Frequency
Figure 60. Gain Flatness vs VCC Over Temperature
Figure 61. Quiescent Current vs VCC Over Temperature
Table 5. PAE Performance @ P1dB vs Output Power Over VCC
VCC (V)
PAE @ P1dB (%)
POUT (dBm)
4.5
43.9
+23.9
5.0
44.8
+25.1
5.5
45.0
+26.1
Table 6. PAE Performance @ P1dB vs Output Power Over Temperature
Temperature (°C)
PAE @ P1dB (%)
POUT (dBm)
–40
45.8
+25.38
+25
44.5
+25.04
+85
43.3
+24.65
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PRELIMINARY DATA SHEET • SKY65045-70LF PA DRIVER
Table 7. PAE Performance @ P1dB vs Output Power Over Frequency
Frequency (MHz)
PAE @ P1dB (%)
POUT (dBm)
824
46.3
+24.92
849
45.5
+25.24
880
46.5
+25.13
897
44.7
+25.04
915
45.8
+25.35
960
45.8
+25.38
Table 8. Supply Current Performance @ P1dB vs Output Power Over VCC
VCC (V)
Operating Current (mA)
POUT (dBm)
4.5
117
+23.9
5.0
133
+25.1
5.5
152
+26.1
Table 9. Supply Current Performance @ P1dB vs Output Power Over Temperature
Temperature (°C)
Operating Current (mA)
POUT (dBm)
–40
142
+25.42
+25
133
+25.05
+85
125
+24.65
Table 10. Supply Current Performance @ P1dB vs Output Power Over Frequency
Frequency (MHz)
Operating Current (mA)
POUT (dBm)
824
126
+24.92
849
137
+25.26
880
130
+25.14
897
133
+25.06
915
139
+25.34
960
138
+25.38
Evaluation Board Description
Circuit Design Configurations
The Skyworks SKY65045 Evaluation Board is used to test the
performance of the SKY65045-70LF PA driver. The Evaluation
Board schematic diagram is shown in Figure 62. An assembly
drawing for the Evaluation Board is shown in Figure 63 and the
layer detail is provided in Figure 64. The layer detail physical
characteristics are noted in Figure 65. Tables 11 and 12 (747
MHz and 897.5 MHz, respectively) provide the Bill of Materials
(BOM) list for Evaluation Board components.
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 SKY65045-70LF 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 device. Therefore, design the connection to the
ground pad to dissipate the maximum wattage produced by
the circuit board. Multiple vias to the grounding layer are
required.
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PRELIMINARY DATA SHEET • SKY65045-70LF PA DRIVER
3. Skyworks recommends including external bypass capacitors
on the DC supply lines. An RF inductor is required on the VCC
supply line to block RF signals from the DC supply. Refer to
Figure 62 for more detail.
4. The RF lines should be well separated from each other with
solid ground in between traces to maximize input-to-output
isolation.
NOTE: Junction temperature (TJ) of the device increases with a
poor connection to the slug and ground. This reduces the
lifetime of the device.
Testing Procedure
Use the following procedure to set up the SKY65045 Evaluation
Board for testing:
1. Connect a 5 V supply to VCC. If available, enable the current
limiting function of the power supply to 100 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.
Application Circuit Notes
5. Enable the RF signal.
RF_IN (pin 1): The amplifier requires a DC blocking capacitor as
part of the external RF matching.
6. Take measurements.
GND (pin 2): Attach the ground pin to the RF ground plane with
the largest diameter and lowest inductance via that the layout
allows. Multiple small vias are also acceptable and will work well
under the device if solder migration is an issue.
CAUTION: If any of the output signals exceed the rated
maximum values, the SKY65045 Evaluation Board
can be permanently damaged.
RF_OUT (pin 3): The amplifier requires a DC blocking capacitor
as part of the external RF matching. The amplifier collector supply
voltage is supplied through an RF choke to the output at pin 3.
GND (pin 4): It is extremely important that the device paddle be
sufficiently grounded for both thermal and stability reasons.
Multiple small vias are acceptable and will work well under the
device if solder migration is an issue.
NOTE: It is important to adjust the VCC voltage source so that
+5 V is measured at the board. The high collector currents
drop the collector voltage significantly if long leads are
used. Adjust the bias voltage to compensate.
Figure 62. SKY65045 Evaluation Board Assembly Drawing
(Refer to Tables 11 and 12 for Component Values)
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PRELIMINARY DATA SHEET • SKY65045-70LF PA DRIVER
Figure 63. SKY65045 Evaluation Board Assembly Drawing
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Figure 64. Evaluation Board Layer Detail
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PRELIMINARY DATA SHEET • SKY65045-70LF PA DRIVER
Figure 65. Layer Detail Physical Characteristics
Table 11. SKY65045 Evaluation Board Bill of Materials (747 MHz)
Component
Quantity
Value
Size
Product
Number
Manufacturer
R1
1
0Ω
0603
5424R20-146
Rohm
MCR03EZHJ000
50 V, 0.063 Ω, ±5%
C7
1
10 μF
0805
5404R29-076
Murata
GRM21BR60J106K
X5R, 50 V, ±20%
C8
1
12 pF
0603
5404R23-014
Murata
GRM1885C1H120JD51D
C0G, 50 V, ±5%
C9
–
DNI
–
–
–
Manufacturer’s Part
Number
Characteristics
–
–
L5
1
3.3 nH
0603
5332R34-005
Taiyo-Yuden
HK16083N3S-T
±0.3 nH, SRF 6000 MHz
M1
1
10 nH
0603
5332R34-020
Taiyo-Yuden
HK160810NJ-T
±5%, SRF 3400 MHz
M2
1
4.7 pF
0603
5404R98-006
Murata
GRM1885C1H4R7CZ01D
C0G, 50 V, ± 0.25 pF
M3
–
DNI
–
–
–
–
–
M4
–
DNI
–
–
–
–
–
M5
1
4.3 pF
0603
5404R71-022
Murata
–
C0G, 50 V, ±0.25 pF
M6
1
6.8 nH
0603
5332R34-020
Taiyo-Yuden
–
±5%, SRF 3400 MHz
Manufacturer’s Part
Number
Table 12. SKY65045 Evaluation Board Bill of Materials (897.5 MHz)
Component
Quantity
Value
Size
Product
Number
Manufacturer
R1
C7
Characteristics
1
0Ω
0603
5424R20-146
Rohm
MCR03EZHJ000
50 V, 0.063 Ω, ±5%
1
1 μF
0805
5404R29-070
TDK
C2012X7R1H104K
X7R, 50 V, ±10%
C8
1
1000 pF
0603
5404R23-057
TDK
C1608COG1H102JT
COG, 50 V, ±5%
C9
–
DNI
–
–
–
L5
1
39 nH
0603
5332R34-034
Taiyo-Yuden
M1
1
DNI
–
–
–
M2
1
10 pF
0603
5404R23-013
Murata
GRM39COG100JO50AD
C0G, 50 V, ± 5%
M3
1
2.2 pF
0603
5404R23-039
Murata
GRM1885C1H2R2CZ01D
COG, 50 V, ± 0.25 pF
M4
–
DNI
–
–
–
M5
1
15 pF
0603
5404R23-015
Murata
M6
–
DNI
–
–
–
–
HK160839NJ-T
–
±5%, SRF 1100 MHz
–
–
–
GRM1885C1H150JD51D
–
C0G, 50 V, ±5%
–
–
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Figure 66. SKY65045-70LF Board Layout Footprint
Figure 67. SKY65045 SOT-89 Package Dimensions
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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PRELIMINARY DATA SHEET • SKY65045-70LF PA DRIVER
Figure 68. SKY65045 SOT-89 Tape and Reel Dimensions
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Ordering Information
Model Name
Ordering Part Number
SKY65045-70LF 390-1500 MHz Low Noise PA Driver
SKY65045-70LF
Evaluation Board Part Number
TW17-D630-001 (747 MHz)
TW17-D440-001 (897.5 MHz)
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SKYWORKS SHALL NOT BE LIABLE FOR ANY DAMAGES, INCLUDING BUT NOT LIMITED TO ANY SPECIAL, INDIRECT, INCIDENTAL, STATUTORY, OR CONSEQUENTIAL DAMAGES, INCLUDING WITHOUT
LIMITATION, LOST REVENUES OR LOST PROFITS THAT MAY RESULT FROM THE USE OF THE MATERIALS OR INFORMATION, WHETHER OR NOT THE RECIPIENT OF MATERIALS HAS BEEN ADVISED
OF THE POSSIBILITY OF SUCH DAMAGE.
Skyworks products are not intended for use in medical, lifesaving or life-sustaining applications, or other equipment in which the failure of the Skyworks products could lead to personal injury,
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any damages resulting from such improper use or sale.
Customers are responsible for their products and applications using Skyworks products, which may deviate from published specifications as a result of design defects, errors, or operation of
products outside of published parameters or design specifications. Customers should include design and operating safeguards to minimize these and other risks. Skyworks assumes no liability for
applications assistance, customer product design, or damage to any equipment resulting from the use of Skyworks products outside of stated published specifications or parameters.
Skyworks, the Skyworks symbol, and “Breakthrough Simplicity” are trademarks or registered trademarks of Skyworks Solutions, Inc., in the United States and other countries. Third-party brands
and names are for identification purposes only, and are the property of their respective owners. Additional information, including relevant terms and conditions, posted at www.skyworksinc.com,
are incorporated by reference.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
200960G • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • August 28, 2012
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