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