DATA SHEET
VDET
PEN
Applications
WiFi-enabled smartphones, tablets, and mobile/portable devices
System-in-Package (SIP) modules for embedded systems
TX
CRX
CBT
SKY85300-21: 2.4 GHz, 256 QAM WLAN/Bluetooth®
Front-End Module
PA
Features
BT
RX
ANT
LNA
202997-001
LEN
Integrated high-performance 2.4 GHz PA, harmonic filter, LNA
with bypass, and T/R switch
Fully matched input and output
LNA with integrated bypass mode
High performance SP3T switch to support Bluetooth/WiFi
functions
Integrated positive slope power detector
Transmit gain: 26 dB
Figure 1. SKY85300-21 Block Diagram
Receive gain: 12 dB
Output power: +22 dBm, MCS7, 5 V
Description
Output power: +21 dBm, MCS9, 5 V
The SKY85300-21 is a complete 802.11b/g/n 256 QAM WLAN RF
front-end module (FEM) with a Bluetooth port. The device
provides all the functionality of a fully matched power amplifier
(PA), power detector, harmonic filter, low-noise amplifier (LNA),
and single-pole, triple-throw (SP3T) switch.
Small QFN (16-pin, 3 x 3 mm) package
(MSL1, 260 C per JEDEC J-STD-020)
VDET
ANT
GND
CRX
CBT
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.
16
15
14
13
1
12
GND
N/C
2
11
BT
VCC2
3
10
N/C
VCC1
4
9
LEN
The SKY85300-21 also includes a transmitter power detector with
20 dB of dynamic range, and a digital enable control for
transmitter power ramp on/off control.
The device is provided in an ultracompact, 16-pin 3 x 3 mm Quad
Flat No-Lead (QFN) package. A functional block diagram is shown
in Figure 1. The pin configuration and package are shown in
Figure 2. Signal pin assignments and functional pin descriptions
are provided in Table 1.
8
RX
7
GND
6
PEN
TX
5
The SKY85300-21 provides a complete 2.4 GHz WLAN RF solution
from the output of the transceiver to the antenna, and from the
antenna to the input of the transceiver. The LNA increases the
receive sensitivity of embedded solutions to improve range or to
overcome the insertion loss of cellular filters (often included for
mobile applications).
202997-002
Figure 2. SKY85300-21 Pinout
(Top View)
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202997F • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • June 22, 2017
1
DATA SHEET • SKY85300-21: 2.4 GHz, 256 QAM FRONT-END MODULE
Table 1. SKY85300-21 Signal Descriptions
Pin
1
Name
VDET
Description
Pin
Name
Description
Power detector output voltage
9
LEN
LNA enable control input
2
N/C
No connection
10
N/C
No connection
3
VCC2
PA positive supply voltage
11
BT
Bluetooth input/output
4
VCC1
PA positive supply voltage
12
GND
Ground
5
TX
RF transmit PA input
13
CBT
Bluetooth antenna switch control
6
PEN
PA enable control input
14
CRX
Receive antenna switch control
7
GND
Ground
15
GND
Ground
8
RX
RF receive LNA output
16
ANT
Antenna
Technical Description
Electrical and Mechanical Specifications
The SKY85300-21 is comprised of a high-efficiency 2.4 GHz PA,
2.4 GHz LNA, and 2.4 GHz SP3T switch. The device is fullymatched, and requires few external components for optimal
performance, which makes it ideal for small portable/mobile
applications. The FEM provides a typical gain of 26 dB. The LNA
supports an enable/disable mode and bypass mode for power
savings when not in receive mode. The PA can be shut off using
the PA_EN signal (pin 6).
The absolute maximum ratings of the SKY85300-21 are provided
in Table 2. The recommended operating conditions are specified
in Table 3 and electrical specifications are provided in Tables 4
through 9.
The state of the SKY85300-21 is determined by the logic provided
in Table 10.
The low-loss SP3T switch provides the T/R switching function on
the SKY85300-21.
Table 2. SKY85300-21 Absolute Maximum Ratings1
Parameter
Minimum
Maximum
Units
VCC1, VCC2
-0.3
+5.5
V
DC input on control pins
VIN
-0.3
+3.6
V
Transmit input power (ANT terminated in
50 Ω match)
PIN
+5
dBm
Operating temperature
TA
-40
+85
C
Storage temperature
TST
-40
+150
C
Electrostatic discharge:
ESD
1000
V
Supply voltage
Human Body Model (HBM), Class 1C
Symbol
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.
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DATA SHEET • SKY85300-21: 2.4 GHz, 256 QAM FRONT-END MODULE
Table 3. SKY85300-21 Recommended Operating Conditions
Parameter
Symbol
Minimum
Typical
Maximum
Units
Supply voltage relative to GND = 0 V
VCC1, VCC2
3.0
5.0
5.25
V
Operating temperature
TA
-40
+25
+85
C
Table 4. SKY85300-21 Electrical Specifications: DC Characteristics1
(VCC1 = VCC2 = 5.0 V, PEN = 3.3 V, TA = 25 °C, All Unused Ports Terminated with 50 Ω, Unless Otherwise Noted)
Parameter
Symbol
Total supply current
ICC
Current off
ICC_OFF
Test Condition
Min
Typical
Max
Units
230
mA
POUT = +21 dBm
200
POUT = +22 dBm
225
POUT = +24 dBm
290
No RF, CBT = PEN =
CRX = LEN = 0 V
Quiescent current
ICQ
No RF
LNA supply current
ICC_LNA
LEN = CRX = 3.3 V
LNA bypass supply current
ICC_LNA_BYP
LEN = 0 V, CRX = 3.3 V
BT port supply current
ICC_BT
CBT = 3.3 V
mA
320
mA
μA
5
130
155
mA
8
11
mA
160
190
250
μA
160
190
250
μA
1 Performance is guaranteed only under the conditions listed in this table.
Table 5. SKY85300-21 Electrical Specifications: Transmit Characteristics1
(VCC1 = VCC2 = 5.0 V, PEN = 3.3 V, CBT = LEN = CRX = 0 V, TA = 25 °C, All Unused Ports Terminated with 50 Ω, Unless Otherwise Noted)
Parameter
Symbol
Frequency range
f
Output power
POUT
Small signal gain
|S21|
Small signal gain variation over any
20 MHz band
ΔS21
nd
Test Condition
Min
Typical
2.4
Max
Units
2.5
GHz
With -45 dB EVM source:
DEVM = 1.8%, MCS9, HT20, DEVM, AT off
+19
+21
dBm
DEVM = 3%, MCS7, HT20, DEVM, AT off
+20
+22
dBm
CCK, mask compliant
+22
+24
25
26
2 harmonics
2fo
POUT = +24 dBm, 1 Mbps, 802.11b
3rd harmonics
3fo
POUT = +24 dBm, 1 Mbps, 802.11b
Delay and rise/fall time
tDR, tDF
50% of VPEN edge and 90/10% of final
output power level
400
Input return loss
S11
@ TX port
-12
Stability
Stab
CW, PIN = -3 dBm, 0.1 GHz to 20 GHz, load
VSWR = 6:1
Ruggedness
RGGD
CW, PIN = +5 dBm, 0.1 GHz to 20 GHz,
load VSWR = 10:1
dBm
29
dB
±0.5
dB
-23
dBm/MHz
-25
dBm/MHz
700
ns
dB
All non-harmonically related outputs less than -43 dBm/MHz
No permanent damage or performance degradation
1 Performance is guaranteed only under the conditions listed in this table.
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3
DATA SHEET • SKY85300-21: 2.4 GHz, 256 QAM FRONT-END MODULE
Table 6. SKY85300-21 Electrical Specifications: Bluetooth Characteristics1
(VCC1 = VCC2 = 5.0 V, CBT = 3.3 V, CRX = LEN = PEN = 0 V, TA = 25 °C, All Unused Ports Terminated with 50 Ω, Unless Otherwise Noted)
Parameter
Symbol
Test Condition
Min
Typical
2.4
Max
Units
2.5
GHz
Frequency range
f
Insertion loss
IL
0.9
dB
BT port return loss
S11
-12
dB
Switch isolation
Iso
20
dB
1 Performance is guaranteed only under the conditions listed in this table.
Table 7. SKY85300-21 Electrical Specifications: Receive Characteristics1
(VCC1 = VCC2 = 5.0 V, LEN = CRX = 3.3 V, PEN = CBT = 0 V, TA = 25 °C, All Unused Ports Terminated with 50 Ω, Unless Otherwise Noted)
Parameter
Symbol
Frequency range
f
Small signal gain
S21
Test Condition
Min
Typical
Max
Units
2.5
GHz
+12.0
-8
+13.5
-7
dB
dB
2.0
2.5
2.4
LNA enabled
Bypass mode
+11.0
-9
Noise figure
NF
From ANT to RX pins
Third order input intercept point
IIP3
LNA enabled
Bypass mode
0
+2
+20
dBm
dBm
Input return loss
S11
LEN = 3.3 V
LEN = 0 V
-10
-8
-12
-10
dB
dB
Output return loss
S22
-10
-8
dB
Enable time
TEN
Switch isolation
Iso
10% to 90% of RX RF power from time that
LEN is at 50%
400
20
dB
ns
dB
1 Performance is guaranteed only under the conditions listed in this table.
Table 8. SKY85300-21 Electrical Specifications: Power Detector Characteristics1
(VCC1 = VCC2 = 5.0 V, PEN = 3.3 V, CBT = LEN = CRX = 0 V, TA = 25 °C, Unless Otherwise Noted)
Parameter
Symbol
Frequency range
f
Power detector range
PDR
Output impedance
PDZLOAD
Output voltage
PDV
Maximum output voltage
PDVMAX
Power detector bandwidth
PDBW
Test Condition
CW, measured @ ANT
Min
Typical
Max
2.4
2.5
GHz
0
+25
dBm
2.5
kΩ
POUT = No RF, measured into 1 MΩ
0.18
0.205
0.235
V
POUT = +21 dBm, CW, measured into 1 MΩ
0.65
0.75
0.85
V
POUT = +24 dBm, CW, measured into 1 MΩ
0.90
1.00
1.10
V
1.26
V
1
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
Units
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MHz
DATA SHEET • SKY85300-21: 2.4 GHz, 256 QAM FRONT-END MODULE
Table 9. SKY85300-21 Electrical Specifications: Control Logic Characteristics1
(VCC1 = VCC2 = 5.0 V, TA = 25 °C, All Unused Ports Terminated with 50 Ω, Unless Otherwise Noted)
Parameter
Symbol
Test Condition
Min
Typical
Max
Units
3.6
0.4
V
V
Control voltage:
High
Low
VIH
VIL
Input current, high
IIH
All pins except PEN
PEN pin
20
100
μA
μA
Input current, low
IIL
All pins except PEN
PEN pin
1
12.5
μA
μA
2.7
0
1 Performance is guaranteed only under the conditions listed in this table.
Table 10. SKY85300-21 Control Logic1
Mode
CBT
(Pin 13)
CRX
(Pin 14)
LEN
(Pin 9)
PEN
(Pin 6)
All off
0
0
0
0
WLAN receive LNA
0
1
1
0
WLAN receive bypass
0
1
0
0
Bluetooth transmit/receive
1
0
0
0
WLAN transmit
0
0
0
1
1 “1” = +3.3 V, “0” = 0 V. Any state not described in this table places the switch into an undefined state. An undefined state does not damage the device.
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202997F • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • June 22, 2017
5
DATA SHEET • SKY85300-21: 2.4 GHz, 256 QAM FRONT-END MODULE
Evaluation Board Description
The SKY85300-21 Evaluation Board is used to test the
performance of the SKY85300-21 FEM. A suggested application
schematic diagram is shown in Figure 3. The Evaluation Board is
shown in Figure 4. Component values for the SKY85300-21
Evaluation Board are listed in Table 11.
Evaluation Board Setup Procedure
1. Connect the system ground to pin 8 of connector J7.
2. Apply 5 V to pins 1 and 3 (VCC1 and VCC2) of connector J7.
3. Test the RF paths as described by the control logic in Table 10.
4. Connect a digital multimeter to pin 15 of connector J7 to
monitor the power detector voltage.
5. Monitor the ANT-to-RX performance by applying an RF signal
to J3 (ANT) and measuring the response from the J2 (RX)
connector output.
6. Monitor the transmit performance by applying an RF signal to
connector J1 (TX) and monitoring the output power on the
antenna port connector J3 (ANT).
CAUTION: Be careful not to overdrive the amplifier by applying
too much RF on the device input.
Evaluation Board Losses
The board losses from the RF connectors of the Evaluation Board
to the pins of the SKY85300-21 are:
ANT: 0.22 dB
BT: 0.22 dB
RX: 0.29 dB
TX: 0.35 dB
Circuit Design Considerations
The following design considerations are general in nature and
must be followed regardless of final use or configuration:
Paths to ground should be made as short as possible.
The ground pad of the SKY85300-21 has special electrical and
thermal grounding requirements. This pad is the main thermal
conduit for heat dissipation. Because 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.
Optimum performance is guaranteed by following the
application schematic, Bill of Materials (BOM), and Gerber files.
The exposed die pad under the chip provides thermal and RF
ground to the device. It is recommended that the maximum
allowable number of vias be used to connect the PDB top metal
(where the die is soldered) to internal ground plane(s) of the
PCB.
The RX, BT, and ANT ports are AC-coupled and do not require
DC blocking capacitors. The TX port (pin 5) has an on-chip
inductor to ground followed by a DC blocking capacitor between
the inductor and the die. Therefore, there is no DC present on
this port.
If the TX port is connected to an external component with DC
present, a 10 pF (component C9) general-purpose blocking
capacitor is recommended. If the TX port is connected to an
external component without DC present, the 10 pF capacitor
can be removed.
The 10 pF decoupling capacitors, C3 and C4, should be on the
primary side of the board at a minimum manufacturable
distance from the FEM.
The component placement of the rest of the components not
mentioned in this section is not critical.
NOTE: A poor connection between the ground pad and ground
increases junction temperature (TJ), which reduces the life
of the device.
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June 22, 2017 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 202997F
DATA SHEET • SKY85300-21: 2.4 GHz, 256 QAM FRONT-END MODULE
J3
Receive
Switch Control
Antenna
Bluetooth
Switch Control
Supply Voltage
8
CRX
9
10
LEN
11
12
13
14
VDET
15
16
PEN
17
18
19
20
2
R4
7.5 Ω
3
R3
8.2 Ω
C3
10 pF
C5
1 μF
C8
1 μF
R2
10 Ω
4
14
CBT
CRX
13
GND 12
VDET
N/C
SKY85300-21
U1
BT
10
VCC2
N/C
VCC1
LEN 9
5
6
7
J4
11
Bluetooth
Input/Output
X
LNA Enable
RX
7
1
ANT
6
PAD
4
5
15
GND
VDD
3
16
PEN
CBT
2
17
Power Detector
Output Voltage
VDD
J7
1
GND
VCC1
TX
VCC2
8
C4
10 pF
C9
10 pF
J1
RF Input
J2
RF Output
PA Enable
202997-003
Figure 3. SKY85300-21 Application Schematic
Table 11. SKY85300-21 Evaluation Board Bill of Materials
Quantity
Component
Value
Vendor
Mfr Part Number
Size
Description
2
C5, C8
1 μF, 10 V, 10%, X5R
Murata
GRM155R61A105KE15D
0402
Monolithic ceramic capacitor
3
C3, C4, C9
10 pF, 50 V, 5%, C0G
Murata
GRM1555C1H100JZ01
0402
Multilayer ceramic capacitor
1
R2
10 Ω 0.25 W, 5%
Panasonic
ERJ-2GEJ100X
0402
Thick film chip resistor
1
R3
8.2 Ω 0.25 W, 5%
Rohm
ESR03EZPJ8R2
0603
Anti-surge chip resistor
1
R4
7.5 Ω 0.25 W, 5%
Rohm
ESR03EZPJ7R5
0603
Anti-surge chip resistor
1
U1
SKY85300
Skyworks
SKY85300-21
QFN300x300
2 GHz FEM
202997-004
Figure 4. SKY85300-21 Evaluation Board
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202997F • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • June 22, 2017
7
DATA SHEET • SKY85300-21: 2.4 GHz, 256 QAM FRONT-END MODULE
Package Dimensions
Package and Handling Information
The PCB board layout footprint for the SKY85300-21 is shown in
Figure 5. Figure 6 shows a typical part marking.
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.
Package dimensions are shown in Figure 7, and tape and reel
dimensions are provided in Figure 8.
The SKY85300-21 is rated to Moisture Sensitivity Level 1
(MSL1) at 260 C. It can be used for lead or lead-free soldering.
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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June 22, 2017 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 202997F
15
14
13
1
15
3X 0.55
16
3X 0.55
3.40
1.80
3X 0.00
DATA SHEET • SKY85300-21: 2.4 GHz, 256 QAM FRONT-END MODULE
12
12
3X 0.55
2
11
3
10
4
9
2
3X 0.00
3.40 1.80
0
3X 0.55
0.60 Typ
5
6
7
0.500 Typ
8
0.250 Typ
Board Metal
Via Pattern
(Note 1)
3.40
0.65 Typ
3.50
1.70
16
15
9X ∅0.254
7
0
14
13
0.20 Typ
Component
Outline
1
12
11
0.65 Typ
16
15
14
13
1
12
2
11
3
10
3
10
4
9
4
9
2
3.50 1.70
0.20 Typ
3.40
0.60 Typ
0.70 Typ
5
6
0.500 Typ
7
5
8
6
7
0.500 Typ
0.350 Typ
8
0.250 Typ
Stencil Pattern
(Note 3)
Solder Mask Pattern
(Note 2)
58% Solder Coverage
on Center Pad
Notes:
1. Via hole recommendations:
0.025 mm Cu via wall plating (minimum), solder mask on the far side should tent or plug via holes.
2. Solder mask recommendations:
Contact board fabricator for recommended solder mask offset and tolerance.
3. Stencil recommendations:
0.125 mm stencil thickness, laser cut apertures, trapezoidal walls and rounded corners offer better paste release.
4. Dimensions and tolerances according to ASME Y14.5M-1994.
5. Unless specified, dimensions are symmetrical about center lines.
6. All dimensions are in millimeters.
202997-005
Figure 5. SKY85300-21 PCB Layout Footprint
Pin 1
Indicator
Skyworks
Part Number
(XX can be
any two digits)
Lot Code
202997-006
Figure 6. Typical Part Marking
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9
DATA SHEET • SKY85300-21: 2.4 GHz, 256 QAM FRONT-END MODULE
3.00 ±0.05
0.05 C
2X
A
0.55 ±0.05
0.05 C
1.70 ±0.05
0.152 Ref
B
0.30 x 45°
0.000–0.050
Pin 1
Indicator
Pin 1
Indicator
Exposed Pad
1.70 ±0.05
3.00 ±0.05
3X R0.075
16X 0.25 Min
0.05 C
2X
2X
16X
0.05 C
0.05 C
Side View
Bottom View
Seating
Plane
Top View
Notes:
Detail A
0.500
4
C
2X R0.075
1. Dimensions and tolerances according to ASME Y14.5M-1994.
2. All measurements are in millimeters.
3. Unless otherwise specified, the following values apply:
Decimal Tolerance:
Angular Tolerance:
X.X (1 place) ± 0.1 mm
± 0.5°
X.XX (2 places) ± 0.05 mm
X.XXX (3 places) ± 0.025 mm
4. Coplanarity applies to the terminals as well as all other bottom surface metallization.
5. Dimension applies to metallized terminal. If terminal tip has a
radius, dimension should not be measured in that radius area.
6. Plating requirements per source control drawing (SCD) 2504.
7. Unless specified, dimensions are symmetrical about center lines.
Detail A
0.35 ± 0.05
Scale: 2X
16 Places
0.25 ± 0.05
5
0.10 M C A B
0.05 M C
202997-007
Figure 7. SKY85300-21 Package Dimensions
2.00 ± 0.05)
(See Note 1)
4.00 ± 0.1
(See Note 2)
0.30 ± 0.05
5.50 ± 0.10
(See Note 1)
A
3.30 ± 0.05
CL
A
0.80 ± 0.10
Detail A
Pin 1
Indicator 1.75 ± 0.1
ø1.55 ± 0.05
8.00 ± 0.10
12.00 ± 0.10
ø1.00 Min.
R0.1 Typ
3.30 ± 0.05
Notes:
1. Measured from center line of sprocket hole to center line of pocket.
2. Cumulative tolerance of 10 sprocket holes: ±0.02 mm.
3. All measurements are in millimeters.
Figure 8. SKY85300-21 Tape and Reel Dimensions
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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202997-008
DATA SHEET • SKY85300-21: 2.4 GHz, 256 QAM FRONT-END MODULE
Ordering Information
Model Name
SKY85300-21: 2.4 GHz Front-End Module
Manufacturing Part Number
SKY85300-21
Evaluation Board Part Number
SKY85300-21EK1
Copyright © 2013-2015, 2017 Skyworks Solutions, Inc. All Rights Reserved.
Information in this document is provided in connection with Skyworks Solutions, Inc. (“Skyworks”) products or services. These materials, including the information contained herein, are provided by
Skyworks as a service to its customers and may be used for informational purposes only by the customer. Skyworks assumes no responsibility for errors or omissions in these materials or the
information contained herein. Skyworks may change its documentation, products, services, specifications or product descriptions at any time, without notice. Skyworks makes no commitment to
update the materials or information and shall have no responsibility whatsoever for conflicts, incompatibilities, or other difficulties arising from any future changes.
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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
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Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
202997F • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • June 22, 2017
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