DATA SHEET
SKY66297-11: 2490 to 2690 MHz High-Efficiency
4 W Power Amplifier
Applications
FDD and TDD 2G/3G/4G LTE systems
3GPP bands 7, 38, and 41 small cell base stations
Driver amplifier for micro-base and macro-base stations
Active antenna array and massive MIMO
VCC1
VBIAS PAEN
VCC3
Active Bias
RFIN
Input
Match
Stage
1
PA
Stage
2
PA
Stage3
PA
Output
Match
RFOUT
Features
High efficiency: PAE = 36% @ +28 dBm
High linearity: +28 dBm with <
50
dBc ACLR with
pre-distortion (20 MHz LTE, 8.5 dB PAR signal)
High gain: 32.5 dB
Excellent input and output return loss: to 50
system
Integrated active bias: performance compensated over temp
Integrated enable On/Off function: PAEN = 1.7 to 2.5 V
Single supply voltage: 5.0 V
Pin-to-pin compatible PA family supporting all 3GPP bands
Compact (16-pin, 5
5
1.3 mm) package
(MSL3, 260
C
per JEDEC J-STD-020)
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.
203323C-001
VCC2
Figure 1. SKY66297-11 Block Diagram
Description
SKY66297-11 is a high-efficiency fully input/output matched
power amplifier (PA) with high gain and linearity. The compact
5
5 mm PA is designed for FDD and TDD 2G/3G/4G LTE small
cell base stations operating from 2490 to 2690 MHz. The active
biasing circuitry is integrated to compensate PA performance over
temperature, voltage, and process variation.
The SKY66297-11 is part of high-efficiency, pin-to-pin compatible
PA family supporting all 3GPP bands.
A block diagram of the SKY66297-11 is shown in Figure 1.
Table 1 lists the pin-to-pin compatible parts in the PA family. The
device package and pinout are shown in Figure 2. Signal pin
assignments and functional pin descriptions are described in
Table 2.
Table 1. Pin-to-Pin Compatible PA Family
Part Number
SKY66296-11
SKY66289-11
SKY66295-11
SKY66298-11
SKY66291-11
SKY66299-11
SKY66294-11
SKY66292-11
SKY66297-11
SKY66293-21
SKY66288-11
Frequency (MHz)
700 to 800
791 to 821
800 to 900
900 to 990
1805 to 1880
1900 to 2000
2000 to 2300
2300 to 2400
2490 to 2690
3400 to 3800
5150 to 5925
3GPP Band
Bands 12, 13, 14, 17, 29, and 44
Band 20
Bands 5, 18, 19, 26 and 27
Band 8
Bands 3 and 9
Bands 2, 25, 33, 36, and 37
Bands 1, 4, 10, and 23
Bands 30, 40
Bands 7, 38, and 41
CBRS, Bands 22, 42,43, and 48
Band 46
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
203323E • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • May 31, 2017
1
DATA SHEET • SKY66297-11: 2490 TO 2690 MHz HIGH-EFFICIENCY 4 W POWER AMPLIFIER
VCC1
GND
VCC2
16
GND
RFIN
GND
GND
1
2
3
4
5
VBIAS
15
14
13
12
11
10
9
GND
VCC3
GND
GND
RFOUT
6
PAEN
7
GND
8
GND
Pin
9
10
11
12
13
14
15
16
RFOUT
GND
GND
VCC3
GND
VCC2
GND
VCC1
203323C-002
Figure 2. SKY66297-11 Pinout
(Top View)
Table 2. SKY66297-11 Signal Descriptions
1
Pin
1
2
3
4
5
6
7
8
GND
RFIN
GND
GND
VBIAS
PAEN
GND
GND
Name
Ground
RF input port
Ground
Ground
Bias voltage
PA enable
Ground
Ground
Description
Name
RF output port
Ground
Ground
Stage 3 collector voltage
Ground
Stage 2 collector voltage
Ground
Stage 1 collector voltage
Description
1 The center ground pad must have a low inductance and low thermal resistance connection to the application’s printed circuit board ground plane.
Technical Description
The matching circuits are contained within the device. An on-chip
active bias circuit is included within the device for both input and
output stages, which provides excellent gain tracking over
temperature and voltage variations.
The SKY66297-11 is internally matched for maximum output
power and efficiency. The input and output stages are
independently supplied using the VCC1, VCC2, and VCC3 supply
lines (pins 16, 14, and 12, respectively). The DC control voltage
that sets the bias is supplied by the VBIAS signal (pin 5).
Electrical and Mechanical Specifications
The absolute maximum ratings of the SKY66297-11 are provided
in Table 3. Recommended operating conditions are specified in
Table 4 and electrical specifications are provided in Table 5.
Typical performance characteristics are shown in Figures 3
through 16.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
2
May 31, 2017 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 203323E
DATA SHEET • SKY66297-11: 2490 TO 2690 MHz HIGH-EFFICIENCY 4 W POWER AMPLIFIER
Table 3. SKY66297-11 Absolute Maximum Ratings
1
Parameter
RF input power (CW)
Supply voltage (VCC1, VCC2, VCC3, VBIAS)
PA enable
Operating temperature
Storage temperature
Junction temperature
Power dissipation
Device thermal resistance
Electrostatic discharge:
Charged Device Model (CDM)
Human Body Model (HBM)
P
IN
V
CC
V
EN
T
C
T
STG
T
J
P
D
40
55
Symbol
Minimum
Maximum
+10
5.5
3
+100
+125
+150
1.4
16.5
Units
dBm
V
V
C
C
C
W
C/W
JC
ESD
500
1000
V
V
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 value. Exceeding any of the limits listed here may result in permanent damage to the device.
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 4. SKY66297-11 Recommended Operating Conditions
Parameter
Supply voltage (VCC1, VCC2, VCC3, VBIAS)
PA enable:
ON
OFF
PA enable current
Operating frequency
Operating temperature
RF turn-on/turn-off time
1
I
ENABLE
f
T
C
2490
40
+25
1.4
Symbol
V
CC
1
, V
CC
2
, V
CC
3
, V
BIAS
PAEN
1.7
2.0
0
1
2.5
0.5
12
2690
+85
V
V
A
MHz
C
s
Minimum
4.75
Typical
5
Maximum
5.25
Units
V
1 RF turn-on time is measured from the time the PA enable reaches 50% of PA enable "on" level to the time at which the RF output power achieves 90% of the average steady-state “on” level.
RF turn-off time is measured from the time the PA enable reaches 50% of PA enable "on" level to the time at which the RF output power decreases to 10% of the average steady-state “on”
level.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
203323E • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • May 31, 2017
3
DATA SHEET • SKY66297-11: 2490 TO 2690 MHz HIGH-EFFICIENCY 4 W POWER AMPLIFIER
Table 5. SKY66297-11 Electrical Specifications
1
(V
CC1
= V
CC2
= V
CC3
= V
BIAS
= 5 V, PAEN = 2.0 V, f = 2630 MHz, T
C
= +25
C,
Input/Output Load = 50
,
Unless Otherwise Noted)
Parameter
Frequency
Small signal gain
Gain @ +28 dBm
Input return loss
Output return loss
Reverse isolation
2
ACLR @ +28 dBm
Saturated output power
Output power at 3dB gain
compression
2
nd
harmonic
3
rd
harmonic
Power added efficiency
Quiescent current
f
|S
21
|
|S
21
|@ +28 dBm
|S
11
|
|S
22
|
|S1
2
|
ACLR
P
SAT
P3dB
2f
O
3f
O
PAE
I
Q
P
IN
=
30
dBm
P
OUT
= +28 dBm
P
IN
=
20
dBm
P
IN
=
20
dBm
P
IN
=
30
dBm
P
OUT
= +28dBm (20 MHz LTE,
8.5 dB PAR signal)
CW, P
IN
= +8 dBm
CW, reference to small signal gain
+34.5
CW, P
OUT
= +28 dBm
CW, P
OUT
= +28 dBm
CW, P
OUT
= +28 dBm
No RF signal
33
+35.5
44
55
36
85
110
–39
–50
dBm
dBc
dBc
%
mA
+35
Symbol
Test Condition
Min
2490
30.5
31.5
9.5
12
32
32.5
11
18
55
–34.5
+36
–31
Typical
Max
2690
Units
MHz
dB
dB
dB
dB
dB
dBc
dBm
1 Performance is guaranteed only under the conditions listed in this table.
2 Not test in production. Verified by design.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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May 31, 2017 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 203323E
DATA SHEET • SKY66297-11: 2490 TO 2690 MHz HIGH-EFFICIENCY 4 W POWER AMPLIFIER
Typical Performance Characteristics
(V
CC
1
= V
CC
2
= V
CC
3
= V
BIAS
= 5 V, PAEN = 2.0 V, f = 2630 MHz, T
C
= +25
C,
Input/Output Load = 50
,
Unless Otherwise Noted)
55
50
45
40
35
55
50
45
40
35
PAE (%)
30
25
20
15
10
5
0
4
6
8
10
12
14
16
18
20
22
24
26
28
30
203323C-003
PAE (%)
2570 MHz
2630 MHz
2690 MHz
30
25
20
15
10
5
0
4
6
8
10
12
14
16
18
20
22
24
26
28
30
–40 °C
+25 °C
+85 °C
203323C-004
Pout (dBm)
Pout (dBm)
Figure 3. PAE vs P
OUT
Across Frequency (CW)
Figure 4. PAE vs P
OUT
Across Temperature (CW)
–28
–29
–30
–29
–30
–31
–31
ACLR (dBc)
–32
ACLR (dBc)
2570 MHz
203323C-005
–32
–33
–34
–35
–36
–37
–38
25.0
26.0
27.0
28.0
29.0
30.0
–33
–34
–35
203323C-006
2630 MHz
2690 MHz
–36
–37
–40 °C
+25 °C
+85 °C
31.0
–38
25.0
26.0
27.0
28.0
29.0
30.0
31.0
Pout (dBm)
Pout (dBm)
Figure 5. ACLR vs P
OUT
Across Frequency
(20 MHz LTE, 8.5 dB PAR Signal)
Figure 6. ACLR vs P
OUT
Across Temperature
(20 MHz LTE, 8.5 dB PAR Signal)
34
33
32
31
36
35
34
33
32
Gain
(dB)
30
29
28
203323C-007
Gain
(dB)
2570 MHz
2630 MHz
2690 MHz
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
31
30
29
28
27
26
25
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
–40 °C
+25 °C
+85 °C
27
26
25
Pout (dBm)
P
OUT
(dBm)
Figure 7. Gain vs P
OUT
Across Frequency
Figure 8. Gain vs P
OUT
Across Temperature
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
203323E • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • May 31, 2017
5
203323C-008
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