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 Characteristics4Rise, Fall (10/90% or 90/10% RF) 25 ns
On, Off (50% CTL to 90/10% RF) 150 ns
Video Feedthru 50 mV
Input Power for 1 dB Compression 0.5–2.0 GHz +28 dBm
Intermodulation Intercept Point (IP3) For Two-tone Input Power +5 dBm 0.5–2.0 GHz +45 dBm
Control Voltages VLow = 0 to 0.2 V @ 20 µA Max.
VHigh = +5 V @ 50 µA Max. to +7 V @ 200 µA Max.
VS = VHigh ± 0.2 V
GaAs MMIC High Isolation SPST Switch
Positive Control 0.7–2.5 GHz
Features
■Single Positive Control Voltage
■+5 V Operation
■High Isolation (45 dB @ 0.9 GHz,
47 dB @ 1.9 GHz)
■J1Por t Non-Reflective
SOIC-8
AS123-12
Description
The AS123-12 SPST IC FET s witch is absorptiv e on the
input.The s witch features high isolation and lo w insertion
loss. Ideal building block for base station applications
where synthesizer isolation is critical.Use in conjunction
with the AS148-24 SPDT s witch to meet GSM synthesizer
switch isolation requirements.
Parameter1Frequency Min. Typ. Max. Unit
Inser tion Loss20.7–1.0 GHz 0.7 0.9 dB
1.0–2.0 GHz 0.8 1.0 dB
2.0–2.5 GHz 1.2 1.3 dB
Isolation 0.7–1.0 GHz 39 45 dB
1.0–2.0 GHz 42 47 dB
2.0–2.5 GHz 30 35 dB
VSWR30.7–1.8 GHz 1.5:1 1.7:1
1.8–2.5 GHz 1.7:1 1.8:1
Electrical Specifications at 25°C (0, +5 V)
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
Operating Characteristics 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. Insertion loss state and J1port.
4.Video feedthru measured with 1 ns risetime pulse and 500 MHz bandwidth.
GaAs MMIC High Isolation SPST Switch Positive Control 0.7–2.5 GHz AS123-12
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
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5 0 0.5 1.0 1.5 2.0 2.5 3.0
Frequency (GHz)
Insertion Loss vs. Frequency
dB
2.0
1.8
1.6
1.4
1.2
1.0 0 0.5 1.0 1.5 2.0 2.5 3.0
Frequency (GHz)
VSWR vs. Frequency
Insertion Loss State
Isolation State
70
60
50
40
30
20
10 0 0.5 1.0 1.5 2.0 2.5 3.0
Frequency (GHz)
Isolation vs. Frequency
dB
Typical Performance Data (0, +5 V)
J2
J1V1
VS
GND
GND
GND
GND
CBL
CBL
1234
8765
50
Characteristic Value
RF Input Power 2 W Max. > 500 MHz,
0/+7 V Control
Supply Voltage +8 V
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
V1J1–J2
0 Inser tion Loss
VHigh Isolation
Truth Table
VHigh = +5 to +7 V (VS= VHigh ± 0.2 V).
DC blocking capacitors must be supplied externally.
CBL = 100 pF for operation >500 MHz.
