SKY85709_11_202671G.pdf

DATA SHEET
SKY85709-11: 5 GHz 802.11ac WLAN Front-End Module
Applications
4B
VDET
 WiFi-enabled handsets, tablets, and mobile/portable systems
 System-in-Package (SIP) modules for embedded systems
 WLAN-enabled wireless video systems
TX
PA
ANT
Features
RX
0B
LNA
 Integrated high-performance 5 GHz PA with harmonic filter, LNA
with bypass, and SPDT
LNA_EN
SW_CTL
PEN
 Fully matched input and output
 Integrated, positive slope power detector
 Transmit gain: 30 dB
S3282
Figure 1. SKY85709-11 Block Diagram
 Receive gain: 13.5 dB
 Output power: +19 dBm @ 2% EVM, 64 QAM 54 Mbps
 Output power: +18 dBm @ 2% EVM, MCS7 HT40
 Output power: +16 dBm @ 1.5% EVM, MCS9 HT80
 Direct connection to battery with 3.6 V nominal supply voltage
 Small, QFN (16-pin, 2.5 x 2.5 mm) package (MSL1, 260 C per
JEDEC J-STD-020)
GND
ANT
GND
SW_CTL
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
VCC2
2
11
RX
VCC1
3
10
GND
GND
4
9
VBAT
5
6
7
8
GND
LNA_EN
PEN
12
GND
1
TX
VDET
Description
1B
The SKY85709-11 is a highly integrated, 5 GHz front-end module
(FEM) incorporating a 5 GHz single-pole, double-throw (SPDT)
transmit/receive (T/R) switch, a 5 GHz low-noise amplifier (LNA)
with bypass, and a 5 GHz power amplifier (PA) intended for
mobile/portable 802.11n/ac applications and systems. The device
operates from a single supply voltage of 3.6 V.
An enable/disable function is included that allows power savings
during off mode. An integrated power detector with 20 dB of
dynamic range is included to provide closed-loop power control
within the system.
The device is provided in a compact, 16-pin 2.5 x 2.5 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.
S2849a
Figure 2. SKY85709-11 Pinout – 16-Pin QFN
(Top View)
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DATA SHEET • SKY85709-11: FRONT-END MODULE
Technical Description
Package and Handling Information
5B
6B
The SKY85709-11 is comprised of a high performance 5 GHz PA,
a 5 GHz LNA with bypass, and a broadband SPDT switch. The
device is fully-matched and requires few external components for
optimal performance, which makes it ideal for small
portable/mobile applications. The FEM provides up to 28 dB of
gain over the frequency band. The PA can be shut off using the
PEN signal (pin 7).
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.
Electrical and Mechanical Specifications
The SKY85709-11 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.
2B
Signal pin assignments and functional pin descriptions are
described in Table 1. The absolute maximum ratings of the
SKY85709-11 are provided in Table 2. The recommended
operating conditions are specified in Table 3 and electrical
specifications are provided in Tables 4, 5, and 6.
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.
The state of the SKY85709-11 is determined by the logic provided
in Table 7.
Table 1. SKY85709-11 Signal Descriptions
Pin
Name
Description
Pin
Name
Description
1
VDET
Detector output voltage
9
VBAT
Logic and LNA supply
2
VCC2
Supply voltage
10
GND
Ground
3
VCC1
Supply voltage
11
RX
RF receive output
4
GND
Ground
12
LNA_EN
LNA enable
5
TX
RF transmit input
13
SW_CTL
Switch control voltage
6
GND
Ground
14
GND
Ground
7
PEN
PA enable
15
ANT
Antenna
8
GND
Ground
16
GND
Ground
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DATA SHEET • SKY85709-11: FRONT-END MODULE
Table 2. SKY85709-11 Absolute Maximum Ratings (Note 1)
Parameter
Symbol
Minimum
Maximum
Units
V
Supply voltage
VBAT, VCC
–0.3
+5.5
DC input on control pin
VIN
–0.3
+3.6
V
Input power (ANT terminated in 50 Ω match)
PIN
+5
dBm
Case operating temperature
TA
–40
+85
C
Storage temperature
TST
–40
+140
C
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.
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. SKY85709-11 Recommended Operating Conditions
Parameter
Symbol
Minimum
Typical
Maximum
Units
Supply voltage relative to GND = 0 V
VCC
3.0
3.6
4.8
V
Operating temperature
TA
–40
+25
+85
C
Logic supply
VBAT
3.0
3.3
4.8
V
Table 4. SKY85709-11 Electrical Specifications: DC Characteristics (Note 1)
(VCC = VBAT = 3.6 V, PEN = 3.6 V, TA = 25 °C, All Unused Ports Terminated with 50 Ω, Unless Otherwise Noted)
Parameter
Symbol
Test Condition
Min
Typical
Max
Units
Supply current
ICC-A
POUT = +19 dBm,
54 Mbps
260
325
mA
Quiescent current
ICQ
No RF
200
260
mA
LNA supply current
ICC_LNA
LNA_EN = 3.3 V, PEN =
SW_CTL = 0 V
13
18
mA
LNA bypass supply current
ICC_LNA_BYP
LNA_EN = PEN = SW_CTL
=0V
20
25
μA
Typical
Max
Units
5925
MHz
Note 1: Performance is guaranteed only under the conditions listed in this table.
T
Table 5. SKY85709-11 Electrical Specifications: General (1 of 2) (Note 1)
(VCC = VBAT = 3.6 V, TA = 25 °C, All Unused Ports Terminated with 50 Ω, Unless Otherwise Noted)
Parameter
Symbol
Test Condition
Min
Transmit Characteristics
Frequency range
f
Error Vector Magnitude
EVM
4900
5150 to 5850 MHz:
Small signal gain
S21
5150 to 5850 MHz
POUT = 19 dBm, 54 Mbps
POUT = 18 dBm, MCS7 HT40
POUT =16 dBm, MCS9 HT80
27
2.0
2.0
1.5
3.0
3.0
2.3
%
%
%
30
33
dB
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DATA SHEET • SKY85709-11: FRONT-END MODULE
Table 5. SKY85709-11 Electrical Specifications: General (2 of 2) (Note 1)
(VCC = VBAT = 3.6 V, TA = 25 °C, All Unused Ports Terminated with 50 Ω, Unless Otherwise Noted)
Parameter
Symbol
Test Condition
Min
Typical
Max
Units
Transmit Characteristics (continued)
Gain flatness
Over any 80 MHz
bandwidth
Harmonics:
Second
Third
2fo
3fo
POUT = +19 dBm,
6 Mbps, 802.11a
Delay and rise/fall time
tDR, tDF
50% of VPA_EN edge and
90/10% of final output
power level
Input return loss
S11
@ TX port
Output return loss
S22
Stability
Stab
@ ANT port
VCC = VBAT = 4.2 V, CW,
POUT = +21 dBm,
0.1 GHz to 20 GHz,
load VSWR = 6:1
VCC = VBAT = 4.2 V,
PIN = -4 dBm 6Mbps,
0.1 GHz to 20 GHz,
load VSWR = 10:1
Full band
Ruggedness
±0.25
dB
±1
dB
–30
–40
dBm/MHz
dBm/MHz
400
ns
–14
–9
dB
–15
–10
dB
All non-harmonically related outputs < –43 dBm/MHz
No permanent damage or performance degradation
Receive Characteristics
Frequency range
f
Small signal gain
S21
Noise figure
NF
rd
3 Order Input Intercept Point
nd
IIP3
4900
LNA enabled
+11
Bypass mode
–7
5925
MHz
+13.5
+16
dB
–5
–3
dB
2.7
dB
LNA enabled
+3
dBm
Bypass mode
+19
dBm
dBm
2 Order Input Intercept Point
IIP2
@ 2600 MHz
+50
Input return loss
S11
LNA enabled
–13
–10
dB
Bypass mode
–13
–10
dB
LNA enabled
–7
–3.5
dB
Bypass mode
–15
–12
dB
Output return loss
S22
Enable time
tEN
Switch isolation
ISOLSW
10% to 90% of receive RF
power, from time that
LNA_EN is at 50%
500
17
ns
dB
Power Detector Characteristics
Frequency range
f
Power detector range, CW
PDR
Output impedance
PDZLOAD
Output voltage
PDVNO_RF
PDVP19
Detector bandwidth
PDBW
4900
Measured @ ANT pin
+4
5925
MHz
+25
dBm
2.2
kΩ
POUT = no RF, measured
in to 1 MΩ, 5500 MHz
0.2
V
POUT = +19 dBm, CW,
measured in to 1 MΩ,
5500 MHz
0.85
V
4
MHz
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DATA SHEET • SKY85709-11: FRONT-END MODULE
Table 6. SKY85709-11 Electrical Specifications: Control Logic Characteristics
(VCC = VBAT = 3.6 V, TA = 25 °C, All Unused Ports Terminated with 50 Ω, Unless Otherwise Noted)
Parameter
Symbol
Control voltage:
High
Low
VIH
VIL
Input current:
High
Low
IIH
IIL
Test Condition
Min
Typical
1.6
0
Max
Units
3.6
0.4
V
V
10
10
μA
μA
Table 7. SKY85709-11 Control Logic
Mode
PEN
(Pin 7)
SW_CTL
(Pin 13)
LNA_EN
(Pin 12)
WLAN transmit
1
1
0
WLAN receive
0
0
1
WLAN receive bypass mode
0
0
0
Note:
“1” = 3.3 V, “0” = 0 V. Any other state than described in this Table places the switch into an undefined state. An undefined state will not damage the device.
Evaluation Board Description
Circuit Design Considerations
9B
7B
The following design considerations are general in nature and
must be followed regardless of final use or configuration:
The SKY85709-11 Evaluation Board is used to test the
performance of the SKY85709-11 FEM. A suggested application
schematic diagram is shown in Figure 3. A photograph of the
Evaluation Board is shown in Figure 4.
 Paths to ground should be made as short as possible.
Evaluation Board Test Procedures
 The RX ports are AC-coupled and do not require DC blocking
capacitors.
 Capacitors C1 and C9 (100 pF) should be on the primary side of
the Evaluation Board at a minimum manufacturable distance
from the FEM.
1. Connect the system ground to pin 1 of connector J1.
2. Apply 3.6 V to pin 4 of connector J1 and to pin 2 of connector
J2.
 The ground pad of the SKY85709-11 has special electrical and
thermal grounding requirements. This pad is the main thermal
conduit for heat dissipation. Since the circuit board acts as the
heat sink, it must conduct as much heat as possible from the
device. Therefore, design the connection to the ground pad to
dissipate the maximum heat produced by the FEM. Multiple vias
to the grounding layer are required.
3. Select a path to test according to the modes shown in Table 7.
4. Connect a multimeter or oscilloscope to pin 2 of connector J1
to monitor the power detector voltage.
5. Apply an RF signal to connector J3 (ANT) to monitor the RX to
ANT performance. Measure the response from the output of
connector J4 (RX).
Evaluation Board Losses
6. Apply an RF signal to connector J5 (TX) to monitor the TX to
ANT performance. Monitor the output power on connector J3
(ANT). Care should be taken not to overdrive the amplifier by
applying too much RF on the input to the device (–20 dBm
provides a suitable starting input power for the device).
The board losses from the RF connectors of the Evaluation Board
to the pins of the SKY85709-11 are:
ANT = TXT = RX = 0.20 dB
Package Dimensions
B
The PCB layout footprint for the SKY85709-11 is shown in
Figure 5. Typical case markings are shown in Figure 6. Package
dimensions for the 16-pin QFN are shown in Figure 7, and tape
and reel dimensions are provided in Figure 8.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
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DATA SHEET • SKY85709-11: FRONT-END MODULE
J3
Antenna
SW_CTL
C1
100 pF
2
R5
0Ω
GND
13
VDET
LNA_EN
VCC2
RX
3
GND
GND
VBAT
5
PEN
6
7
12
LNA_EN
J4
11
RF Receive Output
10
9
VBAT
C9
100 pF
GND
VCC1
TX
4
GND
C6
1 μF
14
SW_CTL
1
VCC2
15
ANT
GND
16
VDET
8
J5
RF Transmit
Input
PEN
J1
J2
1
2
3
4
5
6
7
8
VDET
VCC2
VCC1
SW_CTL
VBAT
1
J2
VBAT
VBAT
J2
2
3
4
5
7
8
9
11
12
SW_CTL
10
6
LNA_EN
PEN
Y1559
Figure 3. SKY85709-11 Application Schematic
Figure 4. SKY85709-11 Evaluation Board
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15
14
13
16
1
12
2
11
3
10
4
9
14
2X 0.51
16
0
2.90
1.64
2X 0.51
DATA SHEET • SKY85709-11: FRONT-END MODULE
2X 0.51
2.90
1.64
0
0
10
2X 0.51
4
0.475 Typ.
5
6
7
8
6
8
0.500 Typ.
9X ø0.254
Board Metal
Via Pattern
(Note 1)
3.00
1.25
8X C0.050 x 45°
16
15
8
0
0.20 Typ.
2.90
0.20 Typ.
14
13
1
16
12
0.45 Typ.
15
14
13
1
12
2
11
3
10
4
9
0.20 Typ.
2
11
3
10
4
9
0.575 Typ.
0.45 Typ.
0.475 Typ.
5
Component
Outline
2.90
3.00
1.25
6
7
5
8
0.500 Typ.
0.30 Typ.
Solder Mask Pattern
(Note 2)
6
7
0.500 Typ.
52% solder coverage
on center pad
8
0.20 Typ.
Stencil Pattern
(Note 3)
NOTES:
1. Via hole recommendations:
0.025 mm Cu via wall plating (minimum),
via hole to be filled with conductive paste
and plated over.
2. Soldermask recommendations:
Contact board fabricator for recommended
soldermask offset and tolerance.
3. Stencil recommendations:
0.10 mm stencil thickness, laser cut apertures,
trapezoidal walls and rounded corners offer
better paste release.
Dimension and tolerancing according to ASME Y14.5M-1994.
Unless specified, dimensions are symmetrical about center lines.
All dimensions are in millimeters.
S3338
Figure 5. SKY85709-11 PCB Layout Footprint
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DATA SHEET • SKY85709-11: FRONT-END MODULE
Pin1
Indicator
SKY11
85709
XXXXX
Skyworks
Part Number
Lot #
Figure 6. Typical Case Markings
(Top View)
1.350 ± 0.050
2.500 ± 0.050
0.450 Max.
See Note 3
16
15
14
Do Not Solder
Typ. 4 Places
O.30 x 45°
13
13
14
15
16
8X 0.15 Min.
1
12
2
11
2.500 ± 0.050
12
1
11
2
1.350 ± 0.050
3
10
4
9
0.500
10
4X ø0.150 ± 0.050
3
R0.075
Typ.
4
9
16X 0.225 ± 0.050
5
6
7
8
8
7
6
5
8X 0.150 ± 0.050
16X 0.200 ± 0.050
Top View
Bottom View
NOTES:
1. All measurements are in millimeters.
2. Dimensioning and tolerancing according to ASME Y14.5M-1994.
Unless otherwise specified the following values apply:
Decimal Tolerance:
Angular Tolerance:
X.X (1 place) ± 0.1 mm
±1°
X.XX (2 places) ± 0.05 mm
X.XXX (3 places) ± 0.025 mm
3. Terminal #1 identification mark located within marked area.
4. Unless specified, dimensions are symmetrical about center lines.
Figure 7. SKY85709-11 16-Pin QFN Package Dimensions
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S2620
DATA SHEET • SKY85709-11: FRONT-END MODULE
2.00 ± 0.05)
(See Note 1)
∅1.00 Min.
4.00 ± 0.1
(See Note 2)
∅1.55 ± 0.05
1.75 ± 0.1
2.75 ± 0.05
3.50 ± 0.10
(See Note 1)
A
C
L
A
0.70 ± 0.10
R0.1 Typ.
4.00 ± 0.10
8.00 + 0.30/– 0.10
0.25 ± 0.05
Pin 1
Indicator
2.75 ± 0.05
A
Notes:
1. Measured from centerline of sprocket hole to centerline of pocket.
2. Cumulative tolerance of 10 sprocket holes: ±0.02 mm.
3. ESD surface resistivity is ≤1 x 109 Ohms/square per EIA, JEDEC
tape and reel specification.
4. Carrier tape: black conductive polycarbonate.
5. Cover tape material: transparent conductive material.
6. All measurements are in millimeters.
S2678
Figure 8. SKY85709-11 Tape and Reel Dimensions
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
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DATA SHEET • SKY85709-11: FRONT-END MODULE
Ordering Information
8B
Model Name
SKY85709-11: 5 GHz Front-End Module
Manufacturing Part Number
SKY85709-11
Evaluation Board Part Number
SKY85709-EVB
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