DATA SHEET
SKY13491-21: 0.7 to 2.7 GHz SP14T MIPI
®
Antenna Switch
Module
Applications
2G/3G/4G multimode cellular handsets (LTE, UMTS, CDMA2000,
EDGE, GSM, TDD-LTE, TD-SCDMA)
Embedded data cards
TRX1
TRX2
TRX3
TRX4
TRX5
TRX6
TRX7
TRX8
ANT
TRX9
TRX10
TRX11
TRX12
TXHB
Features
Dedicated Band 7 TRX ports: 0.90 dB insertion loss @ 2.7 GHz
High isolation and linearity
Broadband frequency range: 0.7 to 2.7 GHz
Twelve linear TRX ports
Integrated low and high band GSM harmonic filters
External MIPI select pin to enable multiple trigger controls
Small MCM (22-pin, 2.5 x 2.9 x 0.8 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.
TXLB
MIPI Decoder
VIO
MIPI_SELECT
SDATA
SCLK
VDD
S3445
Figure 1. SKY13491-21 Block Diagram
Description
The SKY13491-21 is a Single-Pole, Fourteen-Throw (SP14T)
antenna switch with an integrated Mobile Industry Processor
Interface (MIPI
®
) controller. Using an advanced switching
technology, the SKY13491-21 maintains low insertion and high
isolation, which makes it an ideal choice for UMTS, CDMA2000,
EDGE, GSM, and LTE applications.
The design features two dedicated GSM transmit ports and three
dedicated ultra low-loss TRX ports. The switch also has an
excellent triple beat ratio and 2
nd
/3
rd
Order Intermodulation
Distortion (IMD2/IMD3) performance.
Switching is controlled by the MIPI decoder. There is an external
MIPI select pin that enables how the switch responds to power
mode triggers. When this pin is grounded, the switch responds to
any of the power mode triggers. When this pin is left open, the
switch responds to individual power mode triggers. No external
DC blocking capacitors are required on the RF paths as long as no
DC voltage is applied.
The SKY13491-21 is manufactured in a compact,
2.5 x 2.9 x 0.8 mm, 22-pin surface mount Multi-Chip Module
(MCM) 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.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
202835D • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • March 12, 2014
1
DATA SHEET • SKY13491-21 SP14T ANTENNA SWITCH WITH MIPI INTERFACE
TRX10
TRX11
TRX12
TRX9
TRX8
18
GND
19
TXHB
20
TXLB
21
GND
22
ANT
1
TRX1
17
16
15
14
13
12
11
10
9
8
TRX2
SCLK
SDATA
VIO
VDD
MIPI_SELECT
S3444
2
3
4
5
6
7
TRX6
TRX7
TRX5
TRX4
Figure 2. SKY13491-21 Pinout – 22-Pin MCM
(Top View)
Table 1. SKY13491-21 Signal Descriptions
Pin
1
ANT
Name
Antenna port
Description
Pin
12
TRX2
Name
Description
Ultra low-loss 3G WCDMA transmit/receive port 2.
This pin either connected directly to or is
disconnected from pin 1, depending on the
applied control data.
Ultra low-loss 3G WCDMA transmit/receive port 1.
This pin either connected directly to or is
disconnected from pin 1, depending on the
applied control data.
3G WCDMA transmit/receive port 12. This pin
either connected directly to or is disconnected
from pin 1, depending on the applied control data.
3G WCDMA transmit/receive port 11. This pin
either connected directly to or is disconnected
from pin 1, depending on the applied control data.
3G WCDMA transmit/receive port 10. This pin
either connected directly to or is disconnected
from pin 1, depending on the applied control data.
3G WCDMA transmit/receive port 9. This pin either
connected directly to or is disconnected from pin
1, depending on the applied control data.
3G WCDMA transmit/receive port 8. This pin either
connected directly to or is disconnected from pin
1, depending on the applied control data.
2
TRX7
3G WCDMA transmit/receive port 7. This pin either
connected directly to or is disconnected from pin 1,
depending on the applied control data.
3G WCDMA transmit/receive port 6. This pin either
connected directly to or is disconnected from pin 1,
depending on the applied control data.
3G WCDMA transmit/receive port 5. This pin either
connected directly to or is disconnected from pin 1,
depending on the applied control data.
3G WCDMA transmit/receive port 4. This pin either
connected directly to or is disconnected from pin 1,
depending on the applied control data.
Ultra low-loss 3G WCDMA transmit/receive port 3.
This pin either connected directly to or is
disconnected from pin 1, depending on the applied
control data.
MIPI interface select. When this pin is grounded, the
switch responds to any of the power mode triggers.
When this pin is left open, the switch is RFFE MIPI
compliant and responds to individual power mode
triggers.
DC power supply
MIPI decoder enable/reference voltage
13
TRX3
TRX1
14
TRX12
15
TRX11
16
TRX10
17
TRX9
18
TRX8
19
20
GND
TXHB
3
TRX6
4
TRX5
5
TRX4
6
TRX3
7
MIPI_SELECT
8
9
VDD
VIO
Ground
GSM transmit high band. This pin either
connected directly to or is disconnected from pin
1, depending on the applied control data.
GSM transmit low band. This pin either connected
directly to or is disconnected from pin 1,
depending on the applied control data.
Ground
10
SDATA
Data input/output
21
TXLB
11
Note:
SCLK
Clock signal
22
GND
Bottom ground paddles must be connected to ground.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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March 12, 2014 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 202835D
DATA SHEET • SKY13491-21 SP14T ANTENNA SWITCH WITH MIPI INTERFACE
Table 2. SKY13491-21 Absolute Maximum Ratings
Parameter
Supply voltage
MIPI decoder enable/reference voltage
Clock signal voltage
Data signal voltage
RF input power:
LTX pin
HTX pin
All TRXx pins
Storage temperature
Operating temperature
Note:
Symbol
V
DD
VIO
SCLK
SDATA
P
IN
Minimum
2.5
Maximum
6.0
2
VIO
VIO
+36
+34
+31
Units
V
V
V
V
dBm
dBm
dBm
C
C
T
STG
T
OP
–55
–30
+150
+90
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.
Electrical and Mechanical Specifications
The absolute maximum ratings of the SKY13491-21 are provided
in Table 2. Electrical specifications are provided in Tables 3 and 4.
IMD2 and IMD3 test conditions for various frequencies are listed
in Tables 5 and 6, respectively.
Triple Beat Ratio (TBR) test conditions for bands 2 and 5 are listed
in Table 7.
Figure 3 shows a timing diagram. Figure 4 illustrates the test
setup used to measure intermodulation products. This industry
standardized test is used to simulate the WCDMA Band 1 linearity
of the antenna switch. A +20 dBm Continuous Wave (CW) signal,
f
FUND
, is sequentially applied to the TRX1 through TRX12 ports,
while a –15 dBm CW blocker signal, f
BLK
, is applied to the ANT
port.
The resulting 3
rd
Order Intermodulation Distortion (IMD3), f
RX
, is
measured over all phases of f
FUND
. The SKY13491-21 exhibits
exceptional performance for all TRXx ports.
Table 8 shows the isolation matrix for "Ant" to "Off" arms. Table
9 shows the isolation matrix for "On" Arms to "Off" arms. Table
10 provides the matrix of insertion loss and return loss
information. Table 11 describes the register content and
programming read/write sequences. Refer to the
MIPI Alliance
Specification for RF Front-End Control Interface (RFFE),
v1.10 (26
July 2011) for additional information on MIPI programming
sequences and MIPI bus specifications.
Figures 5 and 6 provide the timing diagrams for register write
commands and read commands, respectively.
Table 12 provides the Register_0 logic. Table 13 describes the
register parameters and bit values.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
202835D • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • March 12, 2014
3
DATA SHEET • SKY13491-21 SP14T ANTENNA SWITCH WITH MIPI INTERFACE
Table 3. SKY13491-21 DC Electrical Specifications (Note 1)
(V
DD
= 2.85 V, T
OP
= +25
C,
Characteristic Impedance [Z
O
] = 50
Ω,
Unless Otherwise Noted)
Parameter
Supply voltage
Supply current, active mode
Interface supply voltage
Interface signal:
High
Low
Control current:
High
Low
Note 1:
Performance is guaranteed only under the conditions listed in this Table.
Symbol
V
DD
I
DD
VIO
SDATA
Test Condition
Min
2.50
Typical
2.85
50
Max
6.00
100
1.95
Units
V
μA
V
V
V
μA
μA
1.65
0.8
×
VIO
1.80
0.2
×
VIO
5
5
Table 4. SKY13491-21 RF Electrical Specifications (Note 1) (1 of 2)
(V
DD
= 2.85 V, T
OP
= +25
C,
Characteristic Impedance [Z
O
] = 50
Ω,
Unless Otherwise Noted)
Parameter
Operating frequency
Insertion loss
f
IL
TXLB, 824 to 915 MHz
TXHB, 1710 to 1910 MHz
TRX1 to TRX12 ports:
700 to 824 MHz
824 to 960 MHz
1710 to 1990 MHz
TRX4 to TRX12 ports
(except TRX7):
2110 to 2170 MHz
2300 to 2690 MHz
TRX1/2/3 ports:
2110 to 2170 MHz
2300 to 2690 MHz
TRX7 port:
824 to 960 MHz
1710 to 1990 MHz
2110 to 2170 MHz
2300 to 2690 MHz
GSM LB TX:
2f0 attenuation
3f0 attenuation
4f0 attenuation
GSM HB TX:
2f0 attenuation
3f0 attenuation
Isolation (TRXx to any off TRXx port
[non-adjacent ports])
(See Table 8 for full matrix)
Isolation (TRXx to any off TRXx port
[adjacent ports])
(See Table 8 for full matrix)
On state match
H2LB
H3LB
H4LB
H2HB
H3HB
Iso
824 to 1910 MHz
1910 to 2690 MHz
Iso
824 to 1910 MHz
1910 to 2690 MHz
Return Loss
0.7 to 2.7 GHz
19
16
23
20
14
dB
dB
dB
23
20
28
23
dB
dB
2f0 attenuation 1830 MHz
3f0 attenuation 2745 MHz
4f0 attenuation 3660 MHz
2f0 attenuation 3820 MHz
3f0 attenuation 5730 MHz
23
23
Symbol
Test Condition
Min
0.7
1.25
1.25
0.70
0.70
0.75
Typical
Max
2.7
1.45
1.45
0.80
0.80
1.00
Units
GHz
dB
dB
dB
dB
dB
0.80
1.05
0.70
0.90
0.80
0.85
0.90
1.15
28
28
25
28
28
1.05
1.25
1.00
1.05
0.90
1.15
1.30
1.30
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
21
15
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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March 12, 2014 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 202835D
DATA SHEET • SKY13491-21 SP14T ANTENNA SWITCH WITH MIPI INTERFACE
Table 4. SKY13491-21 RF Electrical Specifications (Note 1) (2 of 2)
(V
DD
= 2.85 V, T
OP
= +25
C,
Characteristic Impedance [Z
O
] = 50
Ω,
Unless Otherwise Noted)
Parameter
GSM harmonics:
High band
Low band
TRXx harmonics
2fo, 3fo
Symbol
2fo, 3fo
P
IN
= +33 dBm, 50
Ω
P
IN
= +33 dBm, 3:1 VSWR
P
IN
= +35 dBm, 50
Ω
P
IN
= +35 dBm, 3:1 VSWR
P
IN
= +25 dBm, 50
Ω,
f = 704 to 2700 MHz
P
IN
= +25 dBm,
5:1 VSWR,
f = 704 to 2700 MHz
TRX1 through TRX10, band 13 2
nd
harmonics
2
nd
Order Intermodulation Distortion
3
rd
Order Intermodulation Distortion
Triple Beat Ratio:
650 to 900 MHz
1710 to 2155 MHz
Turn-on time (See Figure 3)
Switching speed (See Figure 3)
2fo
IMD2
IMD3
TBR
P
IN
= +25 dBm,
f = 787 MHz
See test conditions in
Table 5
See test conditions in
Table 6
See test conditions in
Table 7
From application of V
DD
and VIO
Port to port
2
+81
+81
20
5
–81
–110
–110
–45
–36
–45
–36
–63
–38
–40
dBm
dBm
dBm
dBm
dBm
Test Condition
Min
Typical
Max
Units
–59
–40
–78
–105
–105
dBm
dBm
dBm
dBm
dBc
dBc
μs
μs
t
ON
t
S
Note 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
202835D • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • March 12, 2014
5
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