3-State Attenuated Switch - Teledyne Coax Switches

COAX SWITCHES
Series CAS-37
DC–25GHz
3-State Attenuated Switch
PART NUMBER
CAS-37
DESCRIPTION
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 fi delity switching, minimum
device footprint, and switch reliability are of prime concern.
ENVIRONMENTAL AND PHYSICAL CHARACTERISTICS
Operating Temperature 0°C to 55°C
Vibration (MIL-STD-202 Method 214, 5G RMS
Condition D, non-operating)
Shock (MIL-STD-202 Method 213, 500G
Condition D, non-operating)
Life
1 Million Cycles
RF Power
Contact Factory
Connector Type
SMA
Weight
4 oz. (113.4g ) (max)
ELECTRICAL CHARACTERISTICS
RF Contacts
Break before make
Frequency Range
DC–25 GHz
Characteristic Impedance
50 W
Operate Time
20 ms (max.)
Release Time
20 ms (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
1.11:1 1.20:1 1.50:1 1.45:1 1.80:1 2.80:1
(max.)
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)
Insertion Loss, Thru
Path (dB max.)
+.28
-.4
+.48
-.4
+.83
-.41
+1.12
-.48
+1.55
-.56
-.35 -.48 -.63 -.75 -.93 -1.1
Isolation, Open Path >60 >25 >25 >25 >25 >25
+1.95
-.65
PART NUMBERING SYSTEM
CAS-37 S 3 20 - 1
Series
Connectors
Custom/Special #
Attenuation Value (dB)
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
Miniature DC–25GHz
3-State Attenuated Switch
COAX SWITCHES
TYPICAL PERFORMANCE CURVES
20dB Path VSWR
20dB Path Insertion Loss
VSWR
10
9
8
7
6
5
4
3
2
20dB path VSWR
Spec Line
(dB)
-15
-16
-17
-18
-19
-20
-21
-22
-23
-24
20dB path Insertion Loss
Lower Spec Line
Upper Spec Line
1
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)
-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)
Through Path VSWR
Through Path Insertion Loss
10
9
0
-0.2
VSWR
8
7
6
5
4
3
2
Through path VSWR
Spec Line
(dB)
-0.4
-0.6
-0.8
-1
-1.2
-1.4
-1.6
-1.8
Through Path Insertion Loss
Spec Line
1
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)
-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
Frequency (GHz)
Open State Isolation
0
-10
-20
-30
-40
(dB)
-50
-60
-70
-80
-90
Open State Isolation
Spec Line
-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

COAX SWITCHES
Series CAS-37
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)
OFF
OFF
COIL +2 (C) COILS +1 (A & B)
ON
OFF
COIL +2 (C) COILS +1 (A & B)
OFF
ON
© 2012 TELEDYNE COAX SWITCHES (800) 284-7007 • www.teledynecoax.com CAS-37 Page 3
CAS-37/062012/Q2