Data Sheets - Skyworks Solutions, Inc.

DATA SHEET
SKY13380-350LF: 20 MHz-3.0 GHz High Power SP4T Switch
With Decoder
Applications
• GSM/WCDMA/EDGE datacards and handsets
• Mobile high power switching systems
Features
• Broadband frequency range: 20 MHz to 3.0 GHz
• Low insertion loss: 0.40 dB @ 1 GHz, 0.45 dB @ 2 GHz with
high isolation (28 dB @ 1 GHz)
• VDD: 2.5 to 3.0 V for high power applications; can be used down
to 1.6 V for low power applications
• High linearity IMD < –100 dBm over phase
• Good harmonic performance < –80 dBc @ 0.9 GHz
• Low voltage logic compatible (minimum VHIGH = 1.8 V)
• Small, QFN (16-pin, 3 x 3 mm) package (MSL1, 260 °C per
JEDEC J-STD-020)
Figure 1. SKY13380-350LF Block Diagram
Description
The SKY13380-350LF is a symmetrical, single-pole, four-throw
(SP4T) switch. The device is designed for broadband, high power
switching applications that demand high linearity and low
insertion loss. This is a general purpose switch optimized for a
variety of multimode applications such as GSM/WCDMA/EDGE.
The switch is manufactured using Skyworks state-of-the-art
pHEMT process. The SKY13380-350LF features integrated logic
that uses only two control lines for switch operation. The low
current consumption makes the device suitable for batteryoperated applications.
The SKY13380-350LF SP4T switch is provided in a compact Quad
Flat No-Lead (QFN) 3 x 3 mm 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. SKY13380-350LF Pinout – 16-Pin QFN
(Top View)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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DATA SHEET • SKY13380-350LF SP4T SWITCH
Table 1. SKY13380-350LF Signal Descriptions
Pin #
Name
Description
Pin #
Name
Description
1
GND
Ground
9
GND
Ground
2
VDD
Supply voltage input. The voltage may be
switched. The switching time must be no longer
than the start-up time.
10
GND
Ground
3
CTRL2
Control signal 2. The logic level applied to this
pin, along with the logic level applied to pin 4,
controls the state of the switch.
11
ANT
Antenna. This pin is connected directly and
exclusively to pin 6, 8, 13, or 15 depending on
the control voltage applied to pins 3 and 4. A DC
blocking capacitor is required.
4
CTRL1
Control signal 1. The logic level applied to this
pin, along with the logic level applied to pin 3,
controls the state of the switch.
12
GND
Ground
5
GND
Ground
13
RF1
RF output 1. This pin is either connected directly
to or is disconnected from pin 11, depending on
the control voltage applied to pins 3 and 4. A DC
blocking capacitor is required.
6
RF4
RF output 4. This pin is either connected directly
to or is disconnected from pin 11, depending on
the control voltage applied to pins 3 and 4. A DC
blocking capacitor is required.
14
GND
Ground
7
GND
Ground
15
RF2
RF output 2. This pin is either connected directly
to or is disconnected from pin 11, depending on
the control voltage applied to pins 3 and 4. A DC
blocking capacitor is required.
8
RF3
RF output 3. This pin is either connected directly
to or is disconnected from pin 11, depending on
the control voltage applied to pins 3 and 4. A DC
blocking capacitor is required.
16
N/C
No connection.
Table 2. SKY13380-350LF Absolute Maximum Ratings
Maximum
Units
Supply voltage
Parameter
VDD
3
V
Input power (20 MHz to 3.0 GHz,
VDD = 2.5 to 3.0 V)
PIN
+40
dBm
Control voltage
CTRL1, CTRL2
3
V
Operating temperature
TOP
–40
+85
°C
Storage temperature
TSTG
–50
+100
°C
Note:
Symbol
Minimum
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.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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DATA SHEET • SKY13380-350LF SP4T SWITCH
Functional Description
The SKY13380-350LF is comprised of a CMOS decoder that
enables two TTL-compatible DC lines to control four RF ports. The
decoder is internally connected to a GaAs pHEMT RF switch.
Depending on the logic voltage level applied to the control pins,
the ANT pin is connected to one of four switched RF outputs (RF1,
RF2, RF3, or RF4) by a low insertion loss path, while maintaining a
high isolation path to the alternate port.
Startup time is defined as the time from when VDD is applied to
when the switch is active. Once the startup time has passed, the
control voltages CTRL1 and CTRL2 can be applied. RF power
should not be applied during the startup time or damage to the
device could result.
When VDD is not applied, the device is considered off or inactive.
All arms of the switch remain on in this state, creating a poor
four-way power splitter. The return loss of all RF ports is very low
in this state. RF should not be applied when VDD is not present and
should only be used to conserve current.
Electrical and Mechanical Specifications
The absolute maximum ratings of the SKY13380-350LF are
provided in Table 2. Electrical specifications are provided in
Table 3.
The state of the SKY13380-350LF is determined by the logic
provided in Table 4.
Typical performance characteristics of the SKY13380-350LF are
illustrated in Figures 3 through 8.
The recommended startup sequence is:
Step 1: Apply VDD.
Figure 9 illustrates the test setup used to measure data for 3rd
Order Intermodulation Distortion (IMD3) testing. Figure 10
illustrates the test setup used to measure triple beat ratio data.
Step 2: Apply CTRL1 and CTRL2
Step 3: Apply RF input.
The device must be turned off in the reverse order.
Table 3. SKY13380-350LF Electrical Specifications (1 of 2) (Note 1)
(VDD = 2.65 V, CTRL1 = CTRL2 = VDD, TOP = +25 °C, All Unused RF Ports are Terminated in a 50 Ω Load, Unless Otherwise Noted)
Parameter
Symbol
Test Condition
Min
Typical
Max
Units
0.40
0.45
0.60
0.50
0.60
0.80
dB
dB
dB
RF Specifications
Insertion loss
IL
0.02 to 1.0 GHz
1.0 to 2.0 GHz
2.0 to 2.7 GHz
Isolation
ISO
0.02 to 1.0 GHz
1.0 to 2.0 GHz
2.0 to 2.7 GHz
Return loss
|S11|
0.02 to 2.7 GHz, all RF
ports, insertion loss state
Second harmonic
2fo
Third harmonic
3fo
25
19
19
28
22
21
dB
dB
dB
20
dB
fFUND = 900 MHz,
PIN = +35 dBm
+80
dBc
fFUND = 1800 MHz,
PIN = +33 dBm
+75
dBc
fFUND = 900 MHz,
PIN = +35 dBm
+80
dBc
fFUND = 1800 MHz,
PIN = +33 dBm
+75
dBc
Input 0.1 dB compression point
P0.1dB
@ 900 MHz, 1800 MHz
+39
dBm
3rd Order Intermodulation Distortion
IMD3
fFUND = 1.95 GHz @
+20 dBm,
fBLK = 1.76 GHz
@ –15 dBm,
fRX = 2.14 GHz, worst
case over phase. See
Figure 9.
100
dBm
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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DATA SHEET • SKY13380-350LF SP4T SWITCH
Table 3. SKY13380-350LF Electrical Specifications (2 of 2) (Note 1)
(VDD = 2.65 V, CTRL1 = CTRL2 = VDD, TOP = +25 °C, All Unused RF Ports are Terminated in a 50 Ω Load, Unless Otherwise Noted)
Parameter
Symbol
Test Condition
Min
Typical
Max
Units
RF Specifications (continued)
Switching speed
10/90% RF rise/fall time
1
μs
Startup time
Wait time required from
when VDD is applied until
control voltage can be
applied
25
μs
DC/Control Specifications
Switched supply voltage
VDD
Switched supply current
IDD
1.60
Control voltage:
High
Low
CTRL1, CTRL2
Control current:
High
Low
ICTL
2.65
3.00
0.3
1.60
2.0
0
VDD
0.3
V
V
μA
μA
0.5
0.5
Note 1: Performance is guaranteed only under the conditions listed in this Table.
Table 4. SKY13380-350LF Truth Table
Note:
State
CTRL1 (Pin 4)
CTRL2 (Pin 3)
RF Path
1
VLOW
VLOW
ANT to RF1
2
VLOW
VHIGH
ANT to RF2
3
VHIGH
VLOW
ANT to RF3
4
VHIGH
VHIGH
ANT to RF4
VHIGH = 1.6 V to VDD
VLOW = 0 to 0.3 V
Any state other than described in this Table places the switch into an undefined state.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
4
V
mA
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DATA SHEET • SKY13380-350LF SP4T SWITCH
Typical Performance Characteristics
(VDD = 2.5 to 3.0 V, CTRL1 = CTRL2 = VDD, TOP = +25 °C, All Unused RF Ports are Terminated in a 50 Ω Load, Unless Otherwise Noted)
Figure 3. Insertion Loss vs Frequency
Figure 4. Isolation vs Frequency
(ANT to RF1 Insertion Loss State)
Figure 5. Isolation vs Frequency
(ANT to RF2 Insertion Loss State)
Figure 6. Isolation vs Frequency
(ANT to RF3 Insertion Loss State)
Figure 7. Isolation vs Frequency
(ANT to RF4 Insertion Loss State)
Figure 8. Input Return Loss vs Frequency
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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DATA SHEET • SKY13380-350LF SP4T SWITCH
Figure 9. 3rd Order Intermodulation Test Setup
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DATA SHEET • SKY13380-350LF SP4T SWITCH
Figure 10. Triple Beat Ratio (3BR) Test Setup
Evaluation Board Description
The SKY13380-350LF Evaluation Board is used to test the
performance of the SKY13380-350LF SP4T Switch. An Evaluation
Board schematic diagram is provided in Figure 11. An assembly
drawing for the Evaluation Board is shown in Figure 12.
Components C3 and L1 constitute an ESD filter. This topology and
the component values noted in Figure 11 may vary according to
the ESD requirement and acceptable insertion loss for a specific
application.
Decoupling capacitors (C3 through C6) are recommended to
suppress noise and to prevent RF leakage into the DC control
circuits.
DC blocking capacitors C1, C2, C7, C8, and C9 determine the low
frequency operation of the switch. Increase the capacitor values to
lower operation frequency.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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DATA SHEET • SKY13380-350LF SP4T SWITCH
Figure 11. SKY13380-350LF Evaluation Board Schematic
Figure 12. SKY13380-350LF Evaluation Board Assembly Diagram
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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DATA SHEET • SKY13380-350LF SP4T SWITCH
Package Dimensions
The PCB layout footprint for the SKY13380-350LF is provided in
Figure 13. Typical case markings are shown in Figure 14.
Package dimensions for the 16-pin QFN are shown in Figure 15,
and tape and reel dimensions are provided in Figure 16.
Package and Handling Information
THE SKY13380-350LF 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.
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.
Figure 13. SKY13380-350LF PCB Layout Footprint
(Top View)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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DATA SHEET • SKY13380-350LF SP4T SWITCH
Figure 14. Typical Case Markings
(Top View)
Figure 15. SKY13380-350LF 16-Pin QFN Package Dimensions
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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DATA SHEET • SKY13380-350LF SP4T SWITCH
Figure 16. SKY13380-350LF 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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DATA SHEET • SKY13380-350LF SP4T SWITCH
Ordering Information
Model Name
SKY13380-350LF SP4T Switch
Manufacturing Part Number
SKY13380-350LF
Evaluation Board Part Number
SKY13380-350LF-EVB
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