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DATA SHEET
AS179-92LF: 20 MHz-3.0 GHz GaAs SPDT Switch
Applications
General purpose medium-power switches in telecommunication
applications
Transmit/receive switches in 802.11 b/g WLAN Bluetooth™
systems
Features
IP1dB = +30 dBm typical @ 3 V
IP3 = +43 dBm typical @ 3 V
Low insertion loss, 0.3 dB @ 0.9 GHz
Low DC power consumption
Ultra-miniature, SC-70 (6-pin, 2.00 x 1.25 mm) package
(MSL1, 260 C per JEDEC J-STD-020)
J2 V1
J1
J3 V2
S1614
Figure 1. AS179-92LF Block Diagram
Description
The AS179-92LF is a pHEMT GaAs FET Single Pole Double Throw
(SPDT) switch. The device features low insertion loss and positive
voltage operation with very low DC power consumption. The
AS179-92LF is manufactured in a compact, low-cost
2.00 x 1.25 mm, 6-pin SC-70 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.
J3
GND
J2
V2
J1
V1
123
654
S2107
Figure 2. AS179-92LF Pinout –6-Pin SC-70
(Top View)
DATA SHEET • AS179-92LF SPDT SWITCH
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2 October 6, 2010 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 200176G
Table 1. AS179-92LF Signal Descriptions
Pin # Name Description Pin # Name Description
1 J3 RF output (Note 1) 4 V1 DC control voltage
2 GND Ground 5 J1 RF output (Note 1)
3 J2 RF output (Note 1) 6 V2 DC control voltage
Note 1: A 100 pF blocking capacitor is required for >500 MHz operation. Use larger value capacitors for lower frequency operation.
Table 2. AS179-92LF Absolute Maximum Ratings
Parameter Symbol Minimum Maximum Units
Control voltage VCTL –0.2 +8.0 V
RF input power (VCTL = 0-7 V):
>500 MHz
<500 MHz
6
500
W
mW
Operating temperature TOP –40 +85 °C
Storage temperature TSTG –65 +150 °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.
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. AS179-92LF Electrical Specifications (1 of 2) (Note 1)
(VCTL = 0-3 V, TOP = +25 C, Characteristic Impedance = 50 Ω, Unless Otherwise Noted)
Parameter Symbol Test Condition Min Typical Max Units
Insertion loss (Note 2, Note 3) 0.02 to 1.0 GHz
1.0 to 2.0 GHz
2.0 to 3.0 GHz
0.3
0.4
0.4
0.4
0.5
0.6
dB
dB
dB
Isolation (Note 3) 0.02 to 1.0 GHz
1.0 to 2.0 GHz
2.0 to 3.0 GHz
22
22
20
25
25
23
dB
dB
dB
Voltage Standing Wave Ratio (Note 3,
Note 4)
VSWR 0.02 to 1.0 GHz
1.0 to 2.0 GHz
2.0 to 3.0 GHz
1.2:1
1.2:1
1.3:1
1.4:1
1.4:1
1.45:1
–
–
–
Switching characteristics:
Rise/fall
On/off
Video feedthrough
10/90% or 90/10% RF
50% control to 90/10% RF
TRISE = 1 ns,
bandwidth = 500 MHz
10
100
25
ns
ns
mV
1 dB Input Compression Point IP1dB @ 0.5 to 3.0 GHz
VCTL = 0 to 2 V
VCTL = 0 to 3 V
VCTL = 0 to 5 V
@ 48 MHz
VCTL = 0 to 3 V
VCTL = 0 to 5 V
+26
+30
+34
+28.9
+29.5
dBm
dBm
dBm
dBm
dBm
DATA SHEET • AS179-92LF SPDT SWITCH
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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Table 3. AS179-92LF Electrical Specifications (2 of 2) (Note 1)
(VCTL = 0-3 V, TOP = +25 C, Characteristic Impedance = 50 Ω, Unless Otherwise Noted)
Parameter Symbol Test Condition Min Typical Max Units
3rd Order Intercept Point IP3 +5 dBm two-tone input
power @ 0.5 to
3.0 GHz
VCTL = 0 to 2 V
VCTL = 0 to 3 V,
VCTL = 0 to 5 V
+43
+43
+50
dBm
dBm
dBm
Thermal resistance 25 °C/W
Control voltage:
Low (@ 20 μA max)
High (@100 μA max)
High (@ 200 μA max)
VCTL_L
VCTL_H
VCTL_H
0
0.2
2.0
5.0
V
V
V
Note 1: Performance is guaranteed only under the conditions listed in this Table.
Note 2: Insertion loss changes by 0.003 dB/°C.
Note 3: Typical performance maintained with VCTL = 0.2 V.
Note 4: Insertion loss state.
Typical Performance Characteristics
(VCTL = 0-3 V, TOP = +25 C, PIN = 0 dBm, Characteristic Impedance [ZO] = 50 Ω, CBL = 100 pF, Unless Otherwise Noted)
Frequency (GHz)
Insertion Loss (dB)
0
0.2
0.4
0.6
0.8
1.0
0 0.5 1.0 1.5 2.0 2.5 3.0
Figure 2. Insertion Loss vs Frequency
Frequency (GHz)
Isolation (dB)
10
15
20
25
30
35
40
45
50
00.5 1.0 1.5 2.0 2.5 3.0
Figure 3. Isolation vs Frequency
PRELIMINARY DATA SHEET • AS179-92LF SPDT SWITCH
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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Frequency (GHz)
VSWR
0 0.5 1.0 1.5 2.0 2.5 3.0
1.0
1.1
1.2
1.3
1.4
Figure 4. VSWR vs Frequency
Table 4. Truth Table (VHIGH = 2 to 5 V)
V1 V2 J1-J2 J1-J3
VHIGH 0 Isolation Insertion loss
0 VHIGH Insertion loss Isolation
Note: Any state other than described in this Table places the device in an undefined state. An undefined state does not damage the device.
Evaluation Board Description
The AS179-92LF Evaluation Board is used to test the performance
of the AS179-92LF SPDT switch. An Evaluation Board schematic
diagram is provided in Figure 5. An assembly drawing for the
Evaluation Board is shown in Figure 6.
Package Dimensions
Package dimensions for the 6-pin SC-70 are shown in Figure 7,
and tape and reel dimensions are provided in Figure 8.
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 AS179-92LF 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.
DATA SHEET • AS179-92LF SPDT SWITCH
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
200176G • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • October 6, 2010 5
1
2
34
5
6
J3
J2
J1
RF Output
RF Output
RF Output
V2
V1
GND
S2108
C3
C2
C1
DC Control
Voltage
DC Control
Voltage
Note: Use 100 pF blocking capacitors (C1, C2, C3) for >500 MHz operation. Higher values
recommended for lower frequency operation. Exposed paddle must be grounded.
Use 10 nF blocking capacitors (C1, C2, C3) for <50 MHz operation.
Figure 5. AS179-92LF Evaluation Board Schematic
V2
V1
J1
J3
C3
THRU
C1
C2
J2
S2109
Figure 6. AS179-92LF Evaluation Board Assembly Diagram
DATA SHEET • AS179-92LF SPDT SWITCH
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
6 October 6, 2010 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 200176G
2.00 ± 0.20
1.25 ± 0.10
0.20 mm ± 0.10
2.20 ± 0.20
0.90 ± 0.10
0.005 ± 0.005
0.95 ± 0.15
0.25 ± 0.15
0.14 ± 0.04
0.65 mm BSC
0.23 Ref
Pin 1 Indicator
S1479
All measurements are in millimeters
Dimensioning and tolerancing according to ASME Y14.5M-1994
Figure 7. AS179-92LF 6-Pin SC-70 Package Dimensions
Notes:
1. Carrier tape: black conductive polystyrene.
2. Cover tape material: transparent conductive HSA.
3. Cover tape size: 5.40 mm width.
4. Ten sprocket hole pitch cumulative tolerance ±0.20 mm.
5. All measurements are in millimeters.
2.25 ± 0.10 (Ao)
0.30 ± 0.05
2.70 ± 0.10 (Bo)
8.00 +0.30/–0.10
4.00 (Note 4)4.00 ± 0.10
3.50 ± 0.05
2.00 ± 0.05 1.75 ± 0.10
A
B
1.20 ± 0.10 (Ko)
A
B
B
A
Pin #1
∅1.50+ 0.10/–0.00
∅1.00 Min.
R0.30 Typ.
S1581
Figure 8. AS179-92LF Tape and Reel Dimensions
DATA SHEET • AS179-92LF 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
AS179-92LF SPDT Switch AS179-92LF AS179-92LF-EVB
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