DATA SHEET
SKY13321-360LF: 0.1-3.0 GHz GaAs SPDT Switch
Applications
Higher power applications with excellent linearity performance
WiMAX systems
RFC
J2
J1
Features
Positive voltage control (0 to 1.8 V)
High isolation, 26 dB typical @ 1 GHz
Low loss, 0.4 dB typical @ 1 GHz
Excellent linearity performance, P-0.1dB insertion point
@ +39 dBm
Small, QFN (8-pin, 2 x 2 mm) package (MSL1, 260
C
per
JEDEC J-STD-020)
V1
V2
S1421
Figure 1. SKY13321-360LF Block Diagram
Description
The SKY13321-360LF is a pHEMT GaAs FET I/C switch. The
switch may be used in transmit/receive applications by
connecting the RF common port (RFC, pin 7) to either the J1 or J2
port (pin 1 or 4, respectively) using a low loss path (i.e., a positive
voltage applied to either V1 or V2 pins).
The switch is manufactured in a compact, 2 x 2 mm, 8-pin
exposed pad plastic 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.
J1
GND
GND
J2
1
8
V1
RFC
GND
V2
S1420
2
7
3
6
4
5
Figure 2. SKY13321-360LF Pinout – 8-Pin QFN
(Top View)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
201072D • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • July 15, 2010
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DATA SHEET • SKY13321-360LF SPDT SWITCH
Table 1. SKY13321-360LF Signal Descriptions
Pin #
1
2
3
4
J1
GND
GND
J2
Name
RF port
Ground
Ground
RF port
Description
Pin #
5
6
7
8
V2
GND
RFC
V1
Name
Description
DC control voltage
Ground
RF port
DC control voltage
Table 2. SKY13321-360LF Absolute Maximum Ratings
Parameter
Input power
@ 900 MHz, 5 V
@ 130 MHz, 5 V
Storage temperature
Operating temperature
Note:
Symbol
P
IN
Minimum
Typical
Maximum
+40
+39
Units
dBm
dBm
C
C
T
STG
T
OP
–65
–40
+150
+85
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. SKY13321-360LF Recommended Operating Conditions
Parameter
Frequency
Control voltage:
low
high
f
V
CTL
_
L
V
CTL
_
H
Symbol
Minimum
0.1
0
1.8
Typical
Maximum
3.0
0.2
5.0
Units
GHz
V
V
Electrical and Mechanical Specifications
The absolute maximum ratings of the SKY13321-360LF are
provided in Table 2. The recommended operating conditions are
specified in Table 3 and electrical specifications are provided in
Table 4.
Typical performance characteristics of the SKY13321-360LF are
illustrated in Figures 3 through 8.
The state of the SKY13321-360LF is determined by the logic
provided in Table 5.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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July 15, 2010 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201072D
DATA SHEET • SKY13321-360LF SPDT SWITCH
Table 4. SKY13321-360LF Electrical Specifications (Note 1)
(V
CTL
= 0 V and +3V, T
OP
= +25
C,
P
IN
= 0 dBm, Characteristic Impedance [Z
O
] = 50
Ω,
Unless Otherwise Noted)
Parameter
Frequency
Insertion loss
f
0.1-1.0 GHz
1.0-2.0 GHz
2.0-2.5 GHz
2.5-3.0 GHz
0.1-1.0 GHz
1.0-2.0 GHz
2.0-2.5 GHz
2.5-3.0 GHz
0.1-3.0 GHz
10/90% or 90/10% RF
50% V
CTL
to 90/10% RF
130 MHz
900 MHz
2450 MHz
2fo
P
IN
= +34.5 dBm,
f = 900 MHz
P
IN
= +32.0 dBm,
f = 1800 MHz
P
IN
= +36 dBm,
f = 350 to 470 MHz (UHF
band),
Third harmonic
3fo
P
IN
= +34.5 dBm,
f = 900 MHz
P
IN
= +32.0 dBm,
f = 1800 MHz
P
IN
= +36 dBm,
f = 350 to 470 MHz (UHF
band)
Blocker performance
Tone 1 = 1950 MHz @
+20 dBm,
Tone 2 = 1760 MHz @
–15 dBm, IMD3 measured
@ 2140 MHz
V
CTL
_
L
V
CTL
_
H
I
CC
V
CTL
_
H
= 5 V
0
1.8
100
23
17
15
13
Symbol
Test Condition
Min
0.1
0.40
0.50
0.55
0.60
26
20
18
16
25
650
800
+39
+39
+39
–75
–70
Typical
Max
3.0
0.50
0.60
0.70
0.80
Units
GHz
dB
dB
dB
dB
dB
dB
dB
dB
dB
ns
ns
dBm
dBm
dBm
dBc
dBc
Isolation
Return loss (insertion loss state)
Switching characteristics:
Rise/fall time
On/off time
Input power for 0.1 dB compression
Second harmonic
–80
–75
–70
dBc
dBc
dBc
–85
–105
dBc
dBm
Control voltage:
Low
High
Control current
0.2
5.0
V
V
μA
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
201072D • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • July 15, 2010
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DATA SHEET • SKY13321-360LF SPDT SWITCH
Typical Performance Characteristics
(V
CTL
= 0 V and +3 V, T
OP
= +25
C,
P
IN
= 0 dBm, Characteristic Impedance [Z
O
] = 50
Ω,
Blocking Capacitors = 100 pF,
Bypass Capacitors = 33 pF, Unless Otherwise Noted)
0
–0.1
–0.2
0
–5
RFC-J1
RFC-J2
Isolation (dB)
RFC-J1
RFC-J2
–10
–15
–20
–25
–30
–35
–40
–45
–50
Insertion Loss (dB)
–0.3
–0.4
–0.5
–0.6
–0.7
–0.8
–0.9
–1.0
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Frequency (GHz)
Frequency (GHz)
Figure 3. Typical Insertion Loss
0
–5
–10
–15
Figure 4. Typical Isolation
RFC-J1
RFC-J2
Return Loss (dB)
–20
–25
–30
–35
–40
–45
–50
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Frequency (GHz)
Figure 5. Typical Return Loss
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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July 15, 2010 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201072D
DATA SHEET • SKY13321-360LF SPDT SWITCH
Typical Performance Characteristics
(T
OP
= +25
C,
Characteristic Impedance [Z
O
] = 50
Ω,
Unless Otherwise Noted)
0
–0.1
–0.3
–0.5
0
–0.1
–0.2
–0.3
5V
3V
2.7 V
1.8 V
Loss (dB)
–0.7
–0.9
–1.1
–1.3
–1.5
+10
Loss (dB)
5V
3V
2.7 V
1.8 V
+14
+18
+22
+26
+30
+34
+38
+42
–0.4
–0.5
–0.6
–0.7
–0.8
–0.9
–1.0
+10
+14
+18
+22
+26
+30
+34
+38
+42
Input Power (dBm)
Input Power (dBm)
Figure 6. Typical 130 MHz Compression
0
–0.1
–0.2
–0.3
–0.4
–0.5
–0.6
–0.7
–0.8
–0.9
–1.0
+30
Figure 7. Typical 900 MHz Compression
5.0 V
3.0 V
2.7 V
Loss (dB)
+31
+32
+33
+34
+35
+36
+37
+38
+39
+40
Input Power (dBm)
Figure 8. Typical 2450 MHz Compression
Table 5. SKY13321-360LF Truth Table
V1 (Pin 8)
1
0
Note:
V2 (Pin 5)
0
1
RFC to J1 Path
Insertion loss
Isolation
Isolation
RFC to J2 Path
Insertion loss
“1” = +1.8 V to +5 V. “0” = 0 V. Any state other than described in this Table places the switch into an undefined state.
Evaluation Board Description
The SKY13321-360LF Evaluation Board is used to test the
performance of the SKY13321-360LF SPDT Switch. An assembly
drawing for the Evaluation Board is shown in Figure 9.
Package and Handling Information
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 SKY13321-360LF 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.
Package Dimensions
The PCB layout footprint for the SKY13321-360LF is provided in
Figure 10. Typical case markings are shown in Figure 11.
Package dimensions for the 4-pin QFN are shown in Figure 12,
and tape and reel dimensions are provided in Figure 13.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
201072D • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • July 15, 2010
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