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DATA SHEET
SKY13351-378LF: 20 MHz-6.0 GHz GaAs SPDT Switch
Applications
• WLAN 802.11 a/b/g/n networks
• WLAN repeaters
• ISM band radios
• Low power transmit receive systems
Features
• Positive voltage control (0 and 1.8 V to 0 and 5.0 V)
• Broadband frequency range: 20 MHz to 6.0 GHz
• Very low insertion loss, 0.35 dB typical @ 2.45 GHz
• High isolation, 24 dB typical @ 2.45 GHz
• Excellent linearity performance, IP0.5dB = +30 dBm
• Ultra-miniature, MLPD (6-pin, 1 x 1 mm) package (MSL1,
260 °C per JEDEC J-STD-020)
Figure 1. SKY13351-378LF Block Diagram
Description
The SKY13351-378LF is a pHEMT GaAs FET I/C switch. The
switch may be used in transmit/receive applications by connecting
the RF common port (INPUT, pin 5) to either the OUTPUT1 or
OUTPUT2 port (pin 1 or 3, respectively) using a low loss path (i.e.,
a positive voltage applied to either VCTL1 or VCTL2 pins). The
switch is “reflective short” on the isolated port.
The switch is manufactured in a compact, 1 x 1 mm, 6-pin
exposed pad plastic Micro Leadframe Package Dual (MLPD)
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.
Figure 2. SKY13351-378LF Pinout – 6-Pin QFN
(Top View)
DATA SHEET • SKY13351-378LF SPDT SWITCH
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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Table 1. SKY13351-378LF Signal Descriptions
Pin # Name Description Pin # Name Description
1 OUTPUT1 RF port. Must be DC blocked. 4 VCTL2 DC control voltage
2 GND Ground 5 INPUT RF port. Must be DC blocked
3 OUTPUT2 RF port. Must be DC blocked. 6 VCTL1 DC control voltage
Table 2. SKY13351-378LF Absolute Maximum Ratings
Parameter Symbol Minimum Maximum Units
Input power
>500 MHz, 5 V, CW
>500 MHz, 2.7 V, CW
802.11g, 54 Mbps, 64 QAM, 2.4-2.5 GHz
802.11g, 54 Mbps, 64 QAM, 5.2-5.8 GHz
PIN
+32
+31
+26
+25
dBm
dBm
dBm
dBm
Storage temperature TSTG –65 +150 °C
Operating temperature TOP –40 +85 °C
Note: 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. SKY13351-378LF Recommended Operating Conditions
Parameter Symbol Minimum Typical Maximum Units
Frequency f 0.02 6.0 GHz
Control voltage:
low
high
VCTL_L
VCTL_H
0
1.8
0.2
5.0
V
V
Operating temperature TOP +25 °C
Electrical and Mechanical Specifications
The absolute maximum ratings of the SKY13351-378LF 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 SKY13351-378LF are
illustrated in Figures 3 through 9.
The state of the SKY13351-378LF is determined by the logic
provided in Table 5.
DATA SHEET • SKY13351-378LF SPDT SWITCH
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201132G • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • April 18, 2011 3
Table 4. SKY13351-378LF Electrical Specifications (Note 1)
(VCTL = 0 V and +2.7 V, TOP = +25 °C, PIN = 0 dBm, Characteristic Impedance [ZO] = 50 Ω, Unless Otherwise Noted)
Parameter Symbol Test Condition Min Typical Max Units
Frequency f 0.02 6.0 GHz
Insertion loss IL 0.02-3.0 GHz
3.0-6.0 GHz
0.35
0.50
0.50
0.65
dB
dB
Isolation Iso 0.02-3.0 GHz
3.0-6.0 GHz
22
22
24
26
dB
dB
Return loss (insertion loss state) 0.02-3.0 GHz
3.0-6.0 GHz
25
15
dB
dB
Switching characteristics:
Rise/fall time
On/off time
10/90% or 90/10% RF
50% VCTL to 90/10% RF
40
100
ns
ns
Video feedthrough 25 mV
0.5 dB Input Compression Point IP0.5dB VCTL = 0 and 1.8 V
@ 2.45 GHz
VCTL = 0 and 2.7 V
@ 2.45 GHz
VCTL = 0 and 2.7 V
@ 48 MHz
+21
+29
+22
+30
+26
dBm
dBm
dBm
Input IP3 IIP3 PIN = +20 dBm/tone
VCTL = 0 and 1.8 V
@ 2.45 GHz
VCTL = 0 and 2.7 V
@ 2.45 GHz
VCTL = 1.8 V @ 5.8 GHz
VCTL = 2.7 V @ 5.8 GHz
+30
+46
+32
+50
+30
+46
dBm
dBm
dBm
dBm
Error Vector Magnitude EVM 802.11a, 54 Mbps,
PIN = <+24 dBm,
VCTL = 2.7 V
802.11g, 54 Mbps,
PIN = <+25.5 dBm,
VCTL = 2.7 V
2.5
2.5
%
%
Control voltage:
Low
High
VCTL_L
VCTL_H
0
1.8
2.7
0.2
5.0
V
V
Supply current ICC VCTL_L = 0 V
VCTL_H = 5 V
5
5
μA
μA
Note 1: Performance is guaranteed only under the conditions listed in this Table.
DATA SHEET • SKY13351-378LF SPDT SWITCH
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Typical Performance Characteristics
(VCTL = 0 V and +2.7 V, TOP = +25 °C, PIN = 0 dBm, Characteristic Impedance [ZO] = 50 Ω, Blocking Capacitors = 100 pF,
Bypass Capacitors = 33 pF, Unless Otherwise Noted)
Figure 3. Typical Insertion Loss
Figure 5. Typical Return Loss
Figure 7. Compression vs Control Voltage
(5.2 to 5.8 GHz)
Figure 4. Typical Isolation
Figure 6. Compression vs Control Voltage
(2450 MHz)
Figure 8. 802.11g EVM vs Output Power @ 2.45 GHz, 54 Mbps
DATA SHEET • SKY13351-378LF SPDT SWITCH
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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Figure 9. 802.11a EVM vs Output Power, 5.2-5.8 GHz, 54 Mbps
Table 5. SKY13351-378LF Truth Table
VCTL1 (Pin 6) VCTL2 (Pin 4) INPUT to OUTPUT1 Path INPUT to OUTPUT2 Path
1 0 Isolation Insertion loss
0 1 Insertion loss Isolation
Note
: “1” = +1.8 V to +5 V. “0” = 0 V to +0.2 V. Any state other than described in this Table places the switch into an undefined state. An undefined state will not damage the device.
Evaluation Board Description
The SKY13351-378LF Evaluation Board is used to test the
performance of the SKY13351-378LF SPDT Switch. An Evaluation
Board schematic diagram is provided in Figure 10. An assembly
drawing for the Evaluation Board is shown in Figure 11.
Package Dimensions
The PCB layout footprint for the SKY13351-378LF is provided in
Figure 12. Typical case markings are shown in Figure 13.
Package dimensions for the 6-pin MLPD are shown in Figure 14,
and tape and reel dimensions are provided in Figure 15.
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 SKY13351-378LF 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.
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.
DATA SHEET • SKY13351-378LF SPDT SWITCH
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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Figure 10. SKY13351-378LF Evaluation Board Schematic
Figure 11. SKY13351-378LF Evaluation Board Assembly Diagram
DATA SHEET • SKY13351-378LF SPDT SWITCH
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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Figure 12. SKY13351-378LF PCB Layout Footprint
(Top View)
Figure 13. Typical Case Markings
(Top View)
DATA SHEET • SKY13351-378LF SPDT SWITCH
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Figure 14. SKY13351-378LF 6-Pin QFN Package Dimensions
DATA SHEET • SKY13351-378LF SPDT SWITCH
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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Figure 15. SKY13351-378LF Tape and Reel Dimensions
DATA SHEET • SKY13351-378LF SPDT SWITCH
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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Ordering Information
Model Name Manufacturing Part Number Evaluation Board Part Number
SKY13351-378LF SPDT Switch SKY13351-378LF SKY13351-378LF-EVB
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