
Alpha Industries, Inc. [978] 241-7000
Fax [978] 241-7906 Email sales@alphaind.com www.alphaind.com
1
Specifications subject to change without notice. 2/02A
GaAs IC SPDT Switch
Non-Reflective DC–18 GHz
Features
■ Broadband DC–18 GHz
■ High Isolation, Non-Reflective
■ 5 Lead Hermetic Package
■ Capable of Meeting MIL-STD
Requirements5
AS018M2-65
Description
The AS018M2-65 is a GaAs IC FET SPDT non-reflective
switch. This device is ideal for microstrip applications and
has optimum performance at higher frequencies, since all
leads are RF isolated. This product is useful as a
modulator and switch in high reliability and commercial
applications.
Parameter
Condition
Frequency
Min.
Typ.
Max.
Unit
Switching Characteristics
Rise, Fall (10/90% or 90/10% RF)
1
S
On, Off (50% CTL to 90/10% RF)
1
S
Video Feedthru3
20
mV
Input Power for 1 dB Compression
0/-5 V
0.5–18 GHz
24
dBm
Control Voltages (VC)
0.001 GHz
16
dBm
Intermodulation Intercept Point (IP3)
For Two-tone Input Power 13 dBm
0.5–18 GHz
46
dBm
0.001 GHz
35
dBm
Control Voltages
VLow = 0 to -0.2 V @ 20 A Max.
VHigh = -3 V to -6 V @ 200 A Max.
Operating Characteristics at 25°C
1. All measurements made in a 50
system, unless otherwise specified.
2. Insertion loss changes by 0.003 dB/°C.
3. Video feedthru measured with 1 ns risetime pulse and 500 MHz bandwidth.
4. DC = 300 kHz.
5. See Quality/Reliability section.
0.106 (2.69 mm)
0.053
(1.35 mm)
0.272
(6.91 mm)
± 0.002
0.194 (4.92 mm)
0.053
(1.35 mm)
0.445
(11.30 mm)
± 0.002
0.318
(8.08 mm)
± 0.002
CW-10
MATERIAL
0.164 (4.16 mm)
0.115 (2.92 mm)
± 0.002
0.388 (9.86 mm)
0.328 (8.33 mm)
0.075 (1.91 mm)
± 0.010
0.010 (0.25 mm)
± 0.001
0.378 (9.60 mm) ± 0.003
0.070 (1.78 mm)
KOVAR
0.065
(1.65 mm)
MAX.
0.005
(0.13 mm)
± 0.001
0.015
(0.38 mm)
0.010
(0.25 mm)
± 0.002
CERAMIC
-65
Parameter1
Frequency4
Min.
Typ.
Max.
Unit
Insertion Loss2
DC–2.0 GHz
2.0
2.2
dB
DC–10.0 GHz
2.6
2.8
dB
DC–18.0 GHz
3.5
4.0
dB
Isolation
DC–2.0 GHz
55
60
dB
DC–10.0 GHz
35
40
dB
DC–18.0 GHz
30
35
dB
VSWR (I/O)
DC–2.0 GHz
1.4:1
1.5:1
DC–10.0 GHz
1.6:1
1.8:1
DC–18.0 GHz
1.8:1
2.0:1
Electrical Specifications at 25°C