Willow CAS-37S320-1 3-state attenuated switch Datasheet

Series CAS-37
COAX SWITCHES
DC–25GHz
3-State Attenuated Switch
PART NUMBER
DESCRIPTION
CAS-37
3-State Attenuated Switch, DC-25 GHz
The CAS-37 is a multi-state coaxial switch. It can be switched to a low loss state
(less than 0.5 dB), attenuated state (20 dB across a broadband) or open state with
one of the 2 RF inputs terminated into a 50Ω termination.
The CAS-37 tri-state attenuated coaxial switch is ideal for many applications
including test & measurement where stringent signal fidelity switching, minimum
device footprint, and switch reliability are of prime concern.
ENVIRONMENTAL AND PHYSICAL CHARACTERISTICS
ELECTRICAL CHARACTERISTICS
Operating Temperature
0°C to 55°C
RF Contacts
Break before make
Vibration (MIL-STD-202 Method 214,
Condition D, non-operating)
5G RMS
Frequency Range
DC–25 GHz
Characteristic Impedance
50 W
Shock (MIL-STD-202 Method 213,
Condition D, non-operating)
500G
Operate Time
20 ms (max.)
Life
1 Million Cycles
Release Time
20 ms (max.)
RF Power
Contact Factory
Connector Type
SMA
Weight
4 oz. (113.4g ) (max)
Actuation Voltage Available (V)
12
Actuation Current (mA)
380
PERFORMANCE CHARACTERISTICS
Parameter
DC–3 GHz
3–9 GHz
9–13 GHz
13–18 GHz
18–21 GHz
21-25
VSWR, 20 dB Path
(max.)
1.11:1
1.20:1
1.50:1
1.45:1
1.80:1
2.80:1
VSWR, Thru Path
(max.)
1.11:1
1.20:1
1.25:1
1.33:1
1.33:1
1.50:1
Attenuation, 20 dB
(dB max/min)
+.28
-.4
+.48
-.4
+.83
-.41
+1.12
-.48
+1.55
-.56
+1.95
-.65
Insertion Loss, Thru
Path (dB max.)
-.35
-.48
-.63
-.75
-.93
-1.1
Isolation, Open Path
>60
>25
>25
>25
>25
>25
PART NUMBERING SYSTEM
CAS-37
S
3 20
- 1
Custom/Special #
Series
Attenuation Value (dB)
Connectors
Actuator Voltage
Connector
SMA: SMA Female
Actuator Voltage
1: 28 Vdc
2: 15 Vdc
3: 12 Vdc
For other options, contact factory.
© 2012 TELEDYNE COAX SWITCHES
(800) 284-7007 • www.teledynecoax.com
CAS-37 Page 1
CAS-37/062012/Q2
Series CAS-37
COAX SWITCHES
Miniature DC–25GHz
3-State Attenuated Switch
TYPICAL PERFORMANCE CURVES
20dB Path VSWR
20dB Path Insertion Loss
10
-15
-16
9
20dB path VSWR
8
-17
Spec Line
-18
-19
6
(dB)
VSWR
7
5
-20
-21
4
-22
3
20dB path Insertion Loss
-23
Lower Spec Line
2
-24
1
-25
0
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Upper Spec Line
0
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Frequency (GHz)
Frequency (GHz)
Through Path VSWR
Through Path Insertion Loss
10
0
-0.2
9
8
-0.4
Spec Line
-0.6
-0.8
6
(dB)
VSWR
7
Through path VSWR
5
-1
-1.2
4
-1.4
3
-1.6
Through Path Insertion Loss
2
-1.8
Spec Line
1
-2
0
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
0
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Frequency (GHz)
Frequency (GHz)
Open State Isolation
0
-10
-20
-30
(dB)
-40
-50
-60
-70
Open State Isolation
-80
Spec Line
-90
-100
0
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Frequency (GHz)
CAS-37 Page 2
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
© 2012 TELEDYNE COAX SWITCHES
CAS-37/062012/Q2
Series CAS-37
COAX SWITCHES
DC–25GHz
3-State Attenuated Switch
MECHANICAL OUTLINE
J2 J1
J2
J1
SCHEMATIC DIAGRAM
OPEN PATH
ATTENUATED PATH
THRU PATH
COIL +2 (C)
COILS +1 (A & B)
COIL +2 (C)
COILS +1 (A & B)
COIL +2 (C)
COILS +1 (A & B)
OFF
OFF
ON
OFF
OFF
ON
© 2012 TELEDYNE COAX SWITCHES
(800) 284-7007 • www.teledynecoax.com
CAS-37 Page 3
CAS-37/062012/Q2
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