DATA SHEET
SKY65045-70LF: 390 to 1500 MHz Low-Noise Power
Amplifier Driver
Applications
UHF television
TETRA radio
GSM, AMPS, PCS, DCS, 2.5G, 3G
ISM band transmitters
Fixed WCS
802.16 WiMAX
3GPP Long Term Evolution
Description
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.
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.
Features
Wideband frequency range: 390 to 1500 MHz
Low Noise Figure: 1.8 dB
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)
GND
4
1
2
GND
3
RF_OUT
S244
Skyworks Green
TM
products are compliant with
all applicable legislation and are halogen-free.
For additional information, refer to
Skyworks
Definition of Green
TM
, document number
SQ04–0074.
RF_IN
Figure 1. SKY65045-70LF Pinout Package
(Top View)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
200960I • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • August 14, 2017
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PRELIMINARY DATA SHEET • SKY65045-70LF: PA DRIVER
Active Bias
1
2
3
RF_IN
GND
RF_OUT
S669
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.
Typical performance characteristics of the SKY65045-70LF 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 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 SKY65045-70LF 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.
Electrical and Mechanical Specifications
Signal pin assignments and functional pin descriptions for the
SKY65045-70LF 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
SKY65045-70LF are provided in Table 4.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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August 14, 2017 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 200960I
PRELIMINARY DATA SHEET • SKY65045-70LF: PA DRIVER
Table 1. SKY65045 Signal Descriptions
Pin
1
2
3
4
RF_IN
GND
RF_OUT
GND
Name
RF input
Ground
RF output
Ground
Description
Table 2. SKY65045 Absolute Maximum Ratings
1
(T
A
= +25
C,
Unless Otherwise Noted)
Parameter
RF output power
Supply voltage
Supply current
Power dissipation
Operating case temperature
Storage temperature
Junction temperature
P
OUT
VCC
I
CC
P
D
T
C
T
ST
T
J
-40
-55
Symbol
Min
Typical
+27
6
215
1.3
+85
+125
150
Max
Units
dBm
V
mA
W
°C
°C
°C
1 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.
ESD HANDLING:
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 when handling or transporting. Static charges may easily produce
potentials of several kilovolts on the human body or equipment, which can discharge without detection.
Industry-standard ESD handling precautions should be used at all times.
Table 3. SKY65045 Recommended Operating Conditions
Parameter
Supply voltage
Frequency range
Operating case temperature
VCC
f
T
C
390
-40
+25
Symbol
Min
Typical
5
Max
5.5
1500
+85
Units
V
MHz
°C
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
200960I • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • August 14, 2017
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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,
T
C
= 25 °C, Unless Otherwise Noted)
Parameter
Test Frequency = 747 MHz
Frequency
Small signal gain
Input return loss
Output return loss
Reverse transmission loss
Output power @ 1 dB compression
Operating current
Operating current
Power-added efficiency
Input 3rd Order Intercept Point
Output 3rd Order Intercept Point
Noise Figure
Quiescent current
Test Frequency = 897.5 MHz
Frequency
Small signal gain
Input return loss
Output return loss
Reverse transmission loss
Output power @ 1 dB compression
Operating current
Operating current
Power-added efficiency
Output 3rd Order Intercept Point
Noise Figure
Quiescent current
f
G
S11
S22
S12
P
1
DB
I
CC
I
CC
_
P
1
DB
PAE
OIP3
NF
I
Q
P
IN
= -15 dBm
P
IN
= -15 dBm
P
IN
= -15 dBm
P
IN
= -15 dBm
CW
P
OUT
= +17 dBm
@ P1dB
@ P1dB
P
OUT
/tone = +17 dBm,
ΔF
= 1 MHz
Small signal
No RF
+36.0
+22.5
880.0
13
897.5
14
12.2
19.5
21
+25.0
61
133
45
+37.5
1.8
46
2.4
60
90
180
915.0
16
10.0
10.0
15
MHz
dB
dB
dB
dB
dBm
mA
mA
%
dBm
dB
mA
f
G
S11
S22
S12
P
1
DB
I
CC
I
CC
_
P
1
DB
PAE
IIP3
OIP3
NF
I
CCQ
P
IN
= -15 dBm
P
IN
= -15 dBm
P
IN
= -15 dBm
P
IN
= -15 dBm
CW
P
OUT
= +17 dBm
@ P1dB
@ P1dB
P
IN
/tone = -10 dBm,
ΔF
= 1 MHz
P
OUT
/tone = +8 dBm,
ΔF
= 1 MHz
Small signal
No RF
697
747
15
9
8
23
+24
70
132
35
+29
+44
1.9
47
797
MHz
dB
dB
dB
dB
dBm
mA
mA
%
dBm
dBm
dB
mA
Symbol
Test Conditions
Min
Typical
Max
Units
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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PRELIMINARY DATA SHEET • SKY65045-70LF: PA DRIVER
Typical Performance Data
(VCC = 5 V, f = 747 MHz, CW, Output Impedance = 50
Ω,
Tc = 25 °C, Unless Otherwise Noted)
16.0
15.8
5.5 V
5.0 V
4.5 V
16.0
15.8
Small Signal Gain (dB)
Small Signal Gain
(dB)
15.6
15.4
15.2
15.0
14.8
14.6
14.4
14.2
14.0
697
747
15.6
15.4
15.2
15.0
14.8
14.6
14.4
14.2
14.0
+85
o
C
+25
o
C
–40
o
C
797
697
747
797
Frequency (MHz)
Frequency (MHz)
Figure 3. Small Signal Gain vs Frequency Over VCC
Figure 4. Small Signal Gain vs Frequency Over Temperature
–6.0
–6.5
5.5 V
5.0 V
4.5 V
–6.0
–6.5
+85
o
C
+25
o
C
–40
o
C
Input Return Loss (dB)
Input Return Loss (dB)
–7.0
–7.5
–8.0
–8.5
–9.0
–9.5
–10.0
–10.5
–11.0
697
747
–7.0
–7.5
–8.0
–8.5
–9.0
–9.5
–10.0
–10.5
–11.0
797
697
747
797
Frequency (MHz)
Frequency (MHz)
Figure 5. Input Return Loss vs Frequency Over VCC
Figure 6. Input Return Loss vs Frequency Over Temperature
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
200960I • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • August 14, 2017
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