DATA SHEET
SKY66288-11: 5150 to 5925 MHz High-Efficiency
4 W Power Amplifier
Applications
LTE small cell applications for Band 46
LTE advanced for unlicensed spectrum, LAA, and LTE-U
Driver amplifier for micro-base and macro-base stations
Active antenna array and massive MIMO
RFIN
Input
Match
Stage
1/2
PA
Stage
3
PA
VCC2
Stage
4
PA
203477C-001
VCC1
VBIAS
PAEN
VCC3
Active Bias
Output
Match
RFOUT
Features
High efficiency: PAE = 25% @ +28 dBm
High linearity: +28 dBm with <
50
dBc ACLR with
pre-distortion (2x 20 MHz LTE)
Gain @+28 dBm output power: 34.5 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)
Figure 1. SKY66288-11 Block Diagram
Description
The SKY66288-11 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 the unlicensed spectrum,
LTE-advanced small cell base stations operating from 5150 to
5925 MHz. The active biasing circuitry is integrated to
compensate PA performance over temperature, voltage, and
process variation.
The SKY66288-11 is part of the high-efficiency, pin-to-pin
compatible PA family supporting all 3GPP bands.
A block diagram of the SKY66288-11 is shown in Figure 1. The
device package and pinout for the 16-pin device are shown in
Figure 2. Table 1 lists the pin-to-pin compatible parts in the PA
family. 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, LAA, LTE-U
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.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
203477E • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • September 11, 2017
1
DATA SHEET • SKY66288-11: 5150 TO 5925 MHz HIGH-EFFICIENCY 4 W POWER AMPLIFIER
VCC1
GND
VCC2
14
16
GND
RFIN
GND
GND
1
2
3
4
5
15
13
12
11
10
9
GND
VCC3
GND
GND
RFOUT
6
7
8
GND
Figure 2. SKY66288-11 Pinout
(Top View)
Table 2. SKY66288-11 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
Pin
9
10
11
12
13
14
15
16
RFOUT
GND
GND
VCC3
GND
VCC2
GND
VCC1
Name
RF output port
Ground
Ground
Stage 4 collector voltage
Ground
Stage 3 collector voltage
Ground
Stage 1 and Stage 2 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 SKY66288-11 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 VCBIAS signal (pin 5).
VBIAS
PAEN
Electrical and Mechanical Specifications
The absolute maximum ratings of the SKY66288-11 are provided
in Table 3. Recommended operating conditions are specified in
Table 4, and electrical specifications are provided in Table 5
(5200 MHz) and Table 6 (5850 MHz).
Typical performance characteristics are shown in Figures 3
through 26.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
2
September 11, 2017 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 203477E
GND
203477C-002
DATA SHEET • SKY66288-11: 5150 TO 5925 MHz HIGH-EFFICIENCY 4 W POWER AMPLIFIER
Table 3. SKY66288-11 Absolute Maximum Ratings
1
Parameter
RF input power (CW)
Supply voltage (VCC1, VCC2, VCC3, VBIAS)
Operating temperature
Storage temperature
Junction temperature
Power dissipation
Device thermal resistance
P
IN
V
CC
T
C
T
ST
T
J
P
D
JC
-40
-55
Symbol
Minimum
Maximum
+10
5.5
+100
+125
+150
2.2
25
Units
dBm
V
C
C
C
W
C/W
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. SKY66288-11 Recommended Operating Conditions
Parameter
Supply voltage (VCC1, VCC2, VCC3, VBIAS)
PA enable:
ON
OFF
PA enable current
Operating frequency (CW, T
CASE
= +85
°C)
Operating temperature (CW, T
CASE
= +85
°C)
I
ENABLE
f
T
C
On time: 50% of PAen
voltage to 90% of RF power
Off Time: 50% of PAen
voltage to 10% of RF power
5150
-40
+25
Symbol
V
CC
1
, V
CC
2
, V
CC
3
, V
BIAS
PAEN
1.7
2.0
0
1
2.5
0.5
12
5925
+85
V
V
A
MHz
C
Test Condition
Min
4.75
Typ
5
Max
5.25
Units
V
RF turn-on/turn-off time (CW, T
CASE
= +85
°C)
1.5
5
us
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
203477E • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • September 11, 2017
3
DATA SHEET • SKY66288-11: 5150 TO 5925 MHz HIGH-EFFICIENCY 4 W POWER AMPLIFIER
Table 5. SKY66288-11 Electrical Specifications
1
(V
CC1
= V
CC2
= V
CC3
= V
BIAS
= 5 V, PAEN = 2.0 V, f = 5200 MHz, T
C
= +25
C,
Input/Output Load = 50
,
Unless Otherwise Noted)
Parameter
Small signal gain
Gain @+28 dBm
Input return loss
Output return loss
Reverse isolation
2
ACLR @ +28 dBm
ACLR 2C @ +28 dBm
2
Saturated output power
2
Output power at 3dB gain compression
2
nd
harmonic
2
Power-added efficiency
Quiescent current
2 Not tested in production. Verified by design.
Symbol
|S21|
Gain@+28dBm
|S
11
|
|S
22
|
|S
12
|
ACLR
ACLR 2C
P
SAT
P3dB
2f
O
PAE
I
CCQ
P
IN
=
30
dBm
P
OUT
= +28 dBm
P
IN
=
30
dBm
P
IN
=
30
dBm
P
IN
=
30
dBm
Test Condition
Min
Typ
33.5
Max
Units
dB
dB
dB
dB
dB
33
6.5
8
35
8
9
50
-32
-30
+36
-28
P
OUT
= +28 dBm (20 MHz LTE, 8.5 dB PAR signal)
P
OUT
= +28 dBm (2x20 MHz LTE, 8.5 dB PAR signal)
CW, P
IN
= 8 dBm
CW, reference to small signal gain (P
IN
= -30 dBm)
CW, P
OUT
= +28 dBm
CW, P
OUT
= +28 dBm
No RF signal
22
+34
dBc
dBc
dBm
dBm
dBc
%
mA
+35
-40
25
95
1 Performance is guaranteed only under the conditions listed in this table.
Table 6. SKY66288-11 Electrical Specifications
1
(V
CC1
= V
CC2
= V
CC3
= V
BIAS
= 5 V, PAEN = 2.0 V, f = 5887.5 MHz, T
C
= +25
C,
Input/Output Load = 50
,
Unless Otherwise Noted)
Parameter
Small signal gain
Gain @+28 dBm
Input return loss
Output return loss
Reverse isolation
2
ACLR @ +28 dBm
ACLR 2C @ +28 dBm
2
Saturated output power
Output power at 3dB gain compression
2
nd
harmonic
2
Power-added efficiency
Quiescent current
2 Not tested in production. Verified by design.
Symbol
|S21|
|S21|@+28dBm
|S
11
|
|S
22
|
|S
12
|
ACLR
ACLR 2C
P
SAT
P3dB
2f
O
PAE
I
CCQ
P
IN
=
30
dBm
P
OUT
= +28 dBm
P
IN
=
30
dBm
P
IN
=
30
dBm
P
IN
=
30
dBm
Test Condition
Min
Typ
28
Max
Units
dB
dB
dB
dB
dB
29
9
10
30
10
12
50
-33
-31
+34
-29.5
P
OUT
= +28 dBm (20 MHz LTE, 8.5 dB PAR signal)
P
OUT
= +28 dBm (2x20 MHz LTE, 8.5 dB PAR signal)
CW, P
IN
= 8 dBm
CW, reference to small signal gain (P
IN
= -30 dBm)
CW, P
OUT
= +28 dBm
CW, P
OUT
= +28 dBm
No RF signal
20
+32
dBc
dBc
dBm
dBm
dBc
%
mA
+33.5
-40
24
95
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
4
September 11, 2017 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 203477E
DATA SHEET • SKY66288-11: 5150 TO 5925 MHz HIGH-EFFICIENCY 4 W POWER AMPLIFIER
Typical Performance Characteristics
(Vcc1 = Vcc2 = Vcc3 = Vbias = 5 V, PAEN = 2.0 V, Tc = +25
C,
Input/Output Load = 50
,
Unless Otherwise Noted)
38
36
38
36
Small Signal Gain
(dB)
Small Signal Gain
(dB)
34
32
30
28
26
24
5150
-40 °C
+25 °C
+85 °C
5175
5200
5225
34
32
30
28
26
24
5725
-40 °C
+25 °C
+85 °C
203477-003
5250
5750
5775
5800
5825
5850
5875
5900
5925
Frequency (MHz)
Frequency (MHz)
Figure 3. Small Signal Gain @ Low Band
(P
IN
= -30 dB)
Figure 4. Small Signal Gain@ High Band
(P
IN
= -30 dB)
40
38
36
34
32
40
38
36
34
32
Gain
(dB)
Gain
(dB)
30
28
26
203477-005
30
28
26
22
20
5725
5750
5775
5800
5825
5850
5875
203477-006
24
22
20
5150
5170
5190
5210
5230
-40 °C
+25 °C
+85 °C
24
-40 °C
+25 °C
+85 °C
5900
5250
5925
Frequency (MHz)
Frequency (MHz)
Figure 5. Large Signal Gain @ Low Band
(P
OUT
= +28 dBm, CW)
Figure 6. Large Signal Gain @ High Band
(P
OUT
= +28 dBm, CW)
-6
-6
Output Return Loss (dB)
-10
-12
-14
-16
203477-007
Output Return Loss (dB)
-8
-8
-10
-12
-14
-16
-18
-20
5725
203477-008
-18
-20
5150
-40 °C
+25 °C
+85 °C
5175
5200
5225
-40 °C
+25 °C
+85 °C
5750
5775
5800
5825
5850
5875
5900
5250
Frequency (MHz)
5925
Frequency (MHz)
Figure 7. Output Return Loss @ Low Band
(P
IN
= -30 dB)
Figure 8. Output Return Loss @ High Band
(P
IN
= -30 dB)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
203477E • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • September 11, 2017
5
203477-004
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