DATA SHEET
SKY66008-11: 900 to 990 MHz, +19 dBm Linear Power
Amplifier
Applications
Residential femtocells
WCDMA, Band 8
Small cells
Description
The SKY66008-11 linear Power Amplifier (PA) is a fully matched
surface mount module developed for WCDMA applications
operating from 925 to 960 MHz. The device meets the stringent
spectral linearity requirements of WCDMA femtocell applications
with high power-added efficiency. An integrated directional
coupler eliminates the need for any external coupler.
The
GaAs
MMIC contains all active amplifier circuitry, which
includes input and interstage matching circuits. An output match
into a 50
Ω
load, realized off-chip within the module package,
optimizes efficiency and power performance.
The SKY66008-11 is manufactured with Skyworks InGaP
GaAs
HBT process, which provides for all positive voltage DC supply
operation and maintains high efficiency and good linearity. The
primary bias to the device can be supplied directly from any
suitable power supply with an output of 4.2 V. Power down is
achieved by setting the VEN pin to 0 V. No external supply side
switch is needed since typical “off” leakage is a few microamps
with full primary voltage supplied from the main power supply.
The SKY66008-11 is packaged in a 10-pin, 3 x 3 mm Multi-Chip
Module (MCM), which allows for a highly manufacturable low-cost
solution.
The 10-pin MCM package and pinout are shown in Figure 1. A
functional block diagram of the SKY66008-11 is shown in
Figure 2. Signal pin assignments and functional pin descriptions
are provided in Table 1.
Features
Small signal gain: 28.5 dB
ACLR at P
OUT
= +19 dBm: –54 dBc
PA on/off control
I/O impedance internally matched to 50
Ω
Single DC supply: 3.3 V to 4.6 V
Minimal number of external components required
Small footprint MCM (10-pin, 3 x 3 mm) package
(MSL3, 260
C
per JEDEC J-STD-020)
Skyworks
Green™ products are compliant with
all applicable legislation and are halogen-free.
For additional information, refer to
Skyworks
Definition of Green™,
document number
SQ04-0074.
VCC1
RF_IN
GND
GND
VEN
1
2
3
4
5
10
9
8
7
6
VCC2
RF_OUT
CPL_IN
GND
CPL_OUT
S2992
Figure 1. SKY66008-11 Pinout – 10-Pin MCM
(Top View)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
202538D • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • April 28, 2014
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DATA SHEET • SKY66008-11: +19 dBm LINEAR POWER AMPLIFIER
VEN
VCC1
Driver
Stage
Bias
Power
Stage
Bias
MMIC
RF_IN
VCC2
CPL_OUT
CPL_IN
Input
Match
DA
Inter-Stage
Match
PA
Output
Match
RF_OUT
S2993
Figure 2. SKY66008-11 Linear PA Block Diagram
Table 1. SKY66008-11 Signal Descriptions
Pin
1
2
3
4
5
VCC1
RF_IN
GND
GND
VEN
Name
Description
Input stage supply voltage
RF input port
Ground
Ground
Enable
Pin
6
7
8
9
10
Name
CPL_OUT
GND
CPL_IN
RF_OUT
VCC2
Description
RF coupler output
Ground
RF coupler input
RF output port
Output stage supply voltage
Technical Description
The SKY66008-11 PA contains all of the needed RF matching and
DC biasing circuits. The device is a two-stage, HBT InGaP device
optimized for high linearity and power efficiency. These features
make the device suitable for wideband digital applications where
PA linearity and power consumption are of critical importance
(e.g., small cell and infrastructure applications).
The device is designed for standard WCDMA modulated signals.
Under these stringent test conditions, the device exhibits excellent
spectral purity and power efficiency.
Electrical and Mechanical Specifications
The absolute maximum ratings of the SKY66008-11 are provided
in Table 2. The recommended operating conditions are specified
in Table 3 and electrical specifications are provided in Table 4.
A typical performance plot of ACLR5 versus output power is
shown in Figure 3.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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April 28, 2014 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 202538D
DATA SHEET • SKY66008-11: +19 dBm LINEAR POWER AMPLIFIER
Table 2. SKY66008-11 Absolute Maximum Ratings (Note 1)
Parameter
Supply voltage (VCC1, VCC2)
Total supply current
Logic control input voltage (VEN)
Case operating temperature (Note 2)
Storage temperature
Junction temperature
Thermal resistance
V
CC
I
CC
V
CTL
T
C
T
STG
T
J
Θ
JC
–0.5
–40
–55
Symbol
Minimum
0
Maximum
+4.6
700
3.1
+85
+150
+150
60
Units
V
mA
V
C
C
C
C/W
Note 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.
Note 2:
Case operating temperature (Tc) refers to the temperature of the bottom ground pad.
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. SKY66008-11 Recommended Operating Conditions
Parameter
Frequency range
Supply voltage (VCC1, VCC2) (Note 1)
Logic control input voltage:
Logic high
Logic low
PA enable current
Case operating temperature
f
V
CC
V
IH
V
IL
I
EN
T
C
–20
+25
Symbol
Minimum
925
4.0
1.35
0
4.2
1.80
Typical
Maximum
960
4.6
3.10
0.5
<1
+85
Units
MHz
V
V
V
mA
C
Note 1:
Voltage levels measured at the pads of the package. The Evaluation Board supply voltage levels may be different. Refer to the Evaluation Board schematic diagram in this data sheet.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
202538D • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • April 28, 2014
3
DATA SHEET • SKY66008-11: +19 dBm LINEAR POWER AMPLIFIER
Table 4. SKY66008-11 Electrical Specifications (Note 1)
(VCC1 = VCC2 = +4.2 V, T
C
= +25
C,
f = 942.5 MHz, Characteristic Impedance [Z
O
] = 50
Ω,
VEN = “1,” Unless Otherwise Noted)
Parameter
Small signal gain
Input return loss
Quiescent current
Operating current
Power-down current
Adjacent Channel Leakage Ratio
Symbol
|S21|
|S11|
I
CQ
I
CC
I
PD
ACLR5
Test
Condition
CW, P
IN
= –20 dBm
CW, P
IN
= –20 dBm
No RF
CW, P
OUT
= +19 dBm
VEN = “0”
@5 MHz offset, WCDMA test
model 1, with 64 DPCH,
P
OUT
= +19 dBm
P
OUT
= +19 dBm
CW, P
OUT
= +19 dBm
+19 dBm/tone, frequency
separation = 5 MHz
VSWR = 6:1 @ P
OUT
= +19 dBm
VSWR = 6:1
Min
27
15
Typical
28.5
20
48
130
1
55
145
5
Max
Units
dB
dB
mA
mA
μA
–54
2
–41
–67
36
42
–63
–7
–48
3
–35
–60
dBc
%
dBc
dBc
dBm
dBc
dBm
Error Vector Magnitude
Harmonic suppression
3
rd
Order Output Intercept Point
Stability (non-harmonic spurious)
Maximum ruggedness input power
EVM
2fo
3fo
OIP3
VSWR
STABILITY
P
IN
_
RUG
Note 1:
Performance is guaranteed only under the conditions listed in this table. Both pins 6 and 8 (CPL_OUT and CPL_IN, respectively) should be terminated with 50
Ω.
Stability and
ruggedness are guaranteed by characterization.
ACLR5 (dBc)
–38
–40
–42
–44
–46
–48
–50
–52
–54
–56
–58
–60
–62
–64
–5
VCC = 3.3 V
VCC = 3.6 V
VCC = 3.9 V
VCC = 4.2 V
VCC = 4.6 V
–2
+1
+4
+7
+10
+13
+16
+19
+22
+25
Output Power (dBm)
Figure 3. ACLR5 vs Output Power Over Voltage
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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April 28, 2014 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 202538D
DATA SHEET • SKY66008-11: +19 dBm LINEAR POWER AMPLIFIER
Evaluation Board Description
The SKY66008-11 Evaluation Board is used to test the
performance of the SKY66008-11 PA. A schematic diagram of the
Evaluation Board is shown in Figure 4. An assembly drawing for
the Evaluation Board is shown in Figure 5, and the layer detail is
provided in Figure 6.
Package and Handling Information
Since the device package is sensitive to moisture absorption, it is
baked and vacuum packed before shipping. 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 SKY66008-11 is rated to Moisture Sensitivity Level 3 (MSL3)
at 260
C.
It can be used for lead or lead-free soldering. For
additional information, refer to the Skyworks Application Note,
PCB Design and SMT Assembly/Rework Guidelines for MCM-L
Packages,
document number 101752.
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 SKY66008-11 is provided in
Figure 7. Typical case markings are shown in Figure 8. Figure 9
shows the package dimensions for the 10-pin MCM, and
Figure 10 provides the tape and reel dimensions.
VBATT
J1
1
C12
DNI
C13
10
μF
C3
DNI
C2
DNI
C1
DNI
VCC1
RF_IN
GND
GND
VEN
VCC2
RF_OUT
CPL_IN
GND
CPL_OUT
10
9
8
7
6
C4
DNI
C5
DNI
C6
1000 pF
C7
10
μF
C11
DNI
J2
VCC
RF Input
2
3
4
5
RF Output
J3
RF
Coupler
Input
J4
VEN_DATA
C8
DNI
RF
Coupler
Output
P1
1
2
3
4
5
6
7
8
9
10 11 12
VCC
VCC_SNS
VBATT
VBATT_SNS
VEN_DATA
×
“Key” pin
S3156
Figure 4. SKY66008-11 Evaluation Board Schematic
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
202538D • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • April 28, 2014
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