Skyworks Solutions, Inc. [978] 241-7000 •Fax [978] 241-7906 •Email sales@skyworksinc.com •www.skyworksinc.com 1
Specifications subject to change without notice. 3/99A
Parameter Condition Frequency Min. Typ. Max. Unit
Switching Characteristics5Rise, Fall (10/90% or 90/10% RF) 60 ns
On, Off (50% CTL to 90/10% RF) 100 ns
Video Feedthru 50 mV
Input Power for 1 dB Compression 0.9 GHz +35 dBm
Intermodulation Intercept Point (IP3) For Two-tone Input Power +10 dBm 0.9 GHz +55 dBm
Control Voltages VLow = 0 to -0.2 V @ 20 µA Max.
VHigh = -3 V @ 50 µA to -5 V @ 200 µA Max.
GaAs IC 2 Watt High Linearity
SPDT Switch DC–2 GHz
Features
■High Linearity (55 dBm IP3 @ 0.9 GHz)
■Low Loss (0.35 dB @ 0.9 GHz)
■Antenna Changeover and T/R Cellular
Switch
■-3 to -5 V Operation
MSOP-8
AS138-59
Description
The AS138-59 is a GaAs FET IC high linearity SPDT
switch in a MSOP-8 plastic package. This switch is
designed for use where extremely high linearity and low
insertion loss are required. It can be controlled with
positive, negative or a combination of both voltages. Some
standard implementations include antenna changeover,
T/R and diversity switching over 2 W.The AS138-59 switch
can be used in many analog and digital wireless
communication systems including cellular applications.
Parameter1Frequency2Min. Typ. Max. Unit
Insertion Loss3DC–0.5 GHz 0.3 0.4 dB
DC–1.0 GHz 0.4 0.6 dB
DC–2.0 GHz 1.0 1.2 dB
Isolation DC–0.5 GHz 20 23 dB
DC–1.0 GHz 15 17 dB
DC–2.0 GHz 8 10 dB
VSWR4DC–1.0 GHz 1.3:1 1.4:1
DC–2.0 GHz 1.5:1 1.8:1
Electrical Specifications at 25°C (0, -5 V)
0.012 (0.30 mm)
PIN 1
PIN 1
INDICATOR
+ 0.006 (0.15 mm)
7.0˚
TYP.
0.038 (0.95 mm)
0.030 (0.75 mm) 0.017
(0.43 mm) 8.0˚
MAX.
0.028 (0.70 mm)
0.016 (0.40 mm)
0.007 (0.18 mm)
± 0.005 (0.12 mm)
0.006 (0.15 mm)
0.002 (0.05 mm)
- 0.002 (0.05 mm)
0.0256 (0.65 mm) TYP.
0.118 (3.00 mm)
± 0.004 (0.1 mm)
SQ.
0.193 (4.90 mm)
REF.
Operating Characteristics at 25°C (0, -5 V)
1. All measurements made in a 50 Ωsystem, unless otherwise specified.
2. DC = 300 kHz.
3. Insertion loss changes by 0.003 dB/°C.
4. Insertion loss state.
5. Video feedthru measured with 1 ns risetime pulse and 500 MHz bandwidth.
GaAs IC 2 Watt High Linearity SPDT Switch DC–2 GHz AS138-59
2Skyworks Solutions, Inc. [978] 241-7000 •Fax [978] 241-7906 •Email sales@skyworksinc.com •www.skyworksinc.com
Specifications subject to change without notice. 3/99A
0.7
0.6
0.5
0.4
0.3
0.2
1.0 2.0
Frequency (GHz)
Insertion Loss vs. Frequency
dB
DC
2.0
1.8
1.6
1.4
1.2
1.0
1.0 2.0
Frequency (GHz)
VSWR vs. Frequency
DC
60
50
40
30
10
1.0 2.0
Frequency (GHz)
Isolation vs. Frequency
dB
DC
20
Typical Performance Data (0, -5 V)
J1
OPEN
GND
GND J2
V1
V2
J3
12 34
87 65
Characteristic Value
RF Input Power 6 W Max. > 0.9 MHz,
0/-5 V Control
Control Voltage +0.2 V, -8 V
Operating Temperature -40°C to +85°C
Storage Temperature -65°C to +150°C
ΘJC 25°C/W
Absolute Maximum Ratings
Pin Out
V1V2J1–J2J1–J3
0 -5 Isolation Insertion Loss
-5 0 Insertion Loss Isolation
Truth Table
