Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
Skyworks Proprietary Information. • Products and product information are subject to change without notice. • Spring 2006 661
SWITCHES
DATA SHEET
AS338-12, AS338-12LF: GaAs IC SPDT Nonreflective Switch
300 kHz–2.5 GHz
Features
●Low DC power consumption
●High isolation (40 dB @ 0.9 GHz)
●Nonreflective
●Available lead (Pb)-free and RoHS-compliant MSL-1 @ 260 °C
per JEDEC J-STD-020
Description
The AS338-12 is a low-cost IC FET SPDT nonreflective switch in
a plastic SOIC-8 package for commercial applications. The switch
operates with -5, 0 V or 0, +5 V when “floated” as shown on the
following page. This general-purpose SPDT switch is used in var-
ious telecommunications applications.
1234
8765
VS
10 kΩ
J1
V1
V2
GND
J3
CBL
50
CBP
J2
CBL
CBP
GND
50
CBL
Pin Out
External components shown are for positive voltage operation only.
CBL = 100 pF, CBP = 1000 pF for operation >500 MHz.
Skyworks offers lead (Pb)-free, RoHS (Restriction of
Hazardous Substances)-compliant packaging.
NEW
Parameter(1) Frequency Min. Typ. Max. Unit
Insertion Loss(2) 300 kHz–0.5 GHz 0.5 0.7 dB
300 kHz–1.0 GHz 0.6 0.8 dB
300 kHz–2.0 GHz 0.7 0.9 dB
300 kHz–2.5 GHz 1.2 1.4 dB
Isolation 300 kHz–0.5 GHz 43 46 dB
300 kHz–1.0 GHz 36 39 dB
300 kHz–2.0 GHz 27 30 dB
300 kHz–2.5 GHz 23 26 dB
VSWR(3) 300 kHz–0.5 GHz 1.2:1 1.3:1
300 kHz–1.0 GHz 1.2:1 1.4:1
300 kHz–2.5 GHz 1.3:1 1.5:1
Electrical Specifications at 25 °C (0, -5 V)
1. All measurements made in a 50 Ωsystem, unless otherwise specified.
2. Insertion loss changes by 0.003 dB/°C.
3. Input/output.
Switches
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
Spring 2006 • Skyworks Proprietary Information. • Products and product information are subject to change without notice.662
2.5
2.0
2.0
1.5
1.5
1.0
1.0
0.5
0.5
0
0
Frequency (GHz)
Insertion Loss vs. Frequency
Insertion Loss (dB)
2.00
2.0 2.5
1.75
1.50
1.5
1.25
1.00
1.00.50
Frequency (GHz)
VSWR vs. Frequency
VSWR
Frequency (GHz)
Isolation vs. Frequency
60
50
40
30
20
01 23 4 5
J1–J3
J1–J2
Isolation (dB)
Typical Performance Data (0, -5 V)
Parameter Condition Frequency Min. Typ. Max. Unit
Switching characteristics
Rise, fall 10/90% or 90/10% RF 8 ns
On, off 50% CTL to 90/10% RF 30 ns
Video feedthru TRISE = 1 ns, BW = 500 MHz 25 mV
Input power for 1 dB compression 0.5–2.5 GHz 28 dBm
0.05 GHz 23 dBm
Intermodulation intercept point For two-tone input power 5 dBm 0.5–2.5 GHz 46 dBm
0.05 GHz 40 dBm
Thermal resistance 25 °C/W
Control voltages VLOW = 0 to 0.2 V @ 20 µA max.
VHIGH = -5 V @ 50 µA to -8 V @ 200 µA max.
Operating Characteristics at 25 °C (0, -5 V)
Switches
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
Skyworks Proprietary Information. • Products and product information are subject to change without notice. • Spring 2006 663
SWITCHES
0.049
(1.24 mm)
0.016
(0.41 mm)
0.016 Max.
(0.41 mm) x
45˚ Chamfer
Pin 1
0.197 (5.00 mm)
0.189 (4.80 mm)
0.068
(1.73 mm) Max.
0.010 (0.25 mm)
0.004 (0.10 mm)
0.010 (0.25 mm)
0.007 (0.17 mm)
0.158 (4.00 mm)
0.150 (3.80 mm)
8˚
Max.
0.020 (0.51 mm) Max.
0.244 (6.20 mm)
0.228 (5.80 mm)
0.050 (1.27 mm) BSC
Pin 8
Pin 1
Indicator
SOIC-8
Characteristic Value
RF input power 2 W > 500 MHz 0/-8 V
0.5 W @ 50 MHz 0/-8 V
Control voltage +0.2 V, -8 V
Operating temperature -40 °C to +85 °C
Storage temperature -65 °C to +150 °C
Absolute Maximum Ratings
V1V2J1–J2J1–J3
0 -5 Insertion loss Isolation
-5 0 Isolation Insertion loss
Truth Table
Negative Operation
Positive Operation(1)
V1V2J1–J2J1–J3
VHIGH 0 Insertion loss Isolation
0V
HIGH Isolation Insertion loss
All other conditions not recommended.
VHIGH = 5 to 8 V (VS= VHIGH ± 0.2 V).
1. Refer to Application Notes for further information.
All other conditions not recommended.
Performance is guaranteed only under the conditions listed in the specifications table and is
not guaranteed under the full range(s) described by the Absolute Maximum specifications.
Exceeding any of the absolute maximum/minimum specifications may result in permanent
damage to the device and will void the warranty.
CAUTION: Although this device is designed to be as robust as
possible, ESD (Electrostatic Discharge) can damage
this device. This device must be protected at all times
from ESD. Static charges may easily produce poten-
tials of several kilovolts on the human body or
equipment, which can discharge without detection.
Industry-standard ESD precautions must be employed
at all times.
Recommended Solder Reflow Profiles
Refer to the “Recommended Solder Reflow Profile”
Application Note.
T
ape and Reel Information
Refer to the “Discrete Devices and IC Switch/Attenuators
Tape and Reel Package Orientation” Application Note.
