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© 2013 TELEDYNE RELAYS (800) 284-7007 • www.teledynecoax.com CCRT-53S/CRT-53S Page 1 CCRT-53S\\CRT-53S\\082013\\Q3 Series CCRT-53S/CRT-53S Internal 50Ω Termination DC-26.5 GHz Failsafe SPDT Coaxial Switch COAX SWITCHES
ELECTRICAL CHARACTERISTICS
Form Factor SPDT, break before make Frequency Range CCRT-53S CRT-53S DC–26.5 GHz DC–26.5 GHz Characteristic Impedance 50 Ohms Terminations 50 Ω, 2 Watts CW max. Operate Time 10 ms (max.) Release Time 10 ms (max.) Actuation Voltage Available 12 15 24 28 V Actuation Current, max. @ ambient 420 350 280 200 mA ENVIRONMENTAL AND PHYSICAL CHARACTERISTICS Operating Temperature Commercial Model, CCRT-53S Elite Model, CRT-53S –40°C to 65°C –55°C to 85°C Vibration (MIL-STD-202 Method 214, Condition D, non-operating) 10 g’s RMS Shock (MIL-STD-202 Method 213, Condition D, non-operating) 500 g’s Standard Actuator Life Actuator Life w/ Additional Features 5,000,000 cycles 1,000,000 cycles Connector Type SMA Humidity (Moisture Seal) Available Weight 2.65 oz. (75.13g) (max.) PERFORMANCE CHARACTERISTICS Frequency DC–6 GHz 6–12 GHz 12–18 GHz 18–22 GHz 22–26.5 GHz Insertion Loss, dB, Isolation, dB, min. 80 75 70 70 55 PART NUMBERING SYSTEM Connector S: SMA Female Actuator Voltage 1: 28 Vdc Failsafe 2: 15 Vdc Failsafe 3: 12 Vdc Failsafe 4: 24 Vdc Failsafe Actuator Type 0: Standard Contacts C: Indicator Contacts SEE PARTS LIST ON PAGE 8 Options T: TTL Drivers with Diodes D: Transient Suppression Diodes M: Moisture Seal S: 9 Pin D-Sub Connector Actuator Voltage CCRT-53 S 1 C - T Series Connectors Actuator Type Options For other options, contact factory. PART NUMBER DESCRIPTION CCRT-53S Commercial Failsafe SPDT, DC-26.5GHz, Internal 50 Ω Termination CRT-53S Elite Failsafe SPDT, DC-26.5GHz, Internal 50 Ω Termination The CCRT-53S/CRT-53S is an internally terminated, broadband, SPDT, electromechanical coaxial switch designed to switch a microwave signal from a common input to either of two outputs. The characteristic impedance is 50 Ohms. Internal terminations provide an impedance match for the unselected port. The switches are small with the minimum spacing that is compatible with SMA connectors.
CCRT-53S/CRT-53S Page 2 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE © 2013 TELEDYNE COAX SWITCHES CCRT-53S\\CRT-53S\\082013\\Q3 Series CCRT-53S/CRT-53S Internal 50Ω Termination DC-26.5 GHz Failsafe SPDT Coaxial Switch COAX SWITCHES SCHEMATICS AND MECHANICAL OUTLINE
9 PIN D-SUB PINOUT FOR FAILSAFE SPDT
No. Basic Indicators TTL Indicators & TTL 1+ + 2- -
3 Common Common
“-S OPTION” 9-PIN D-SUB CONNECTOR (EXAMPLE: CCRT-53S10-S) TRUTH TABLE (with TTL option) Logic Input RF Path Indicator (if applicable) 1I N to 1 IN to 2 AB
0 On Terminated C 0
1 Terminated On 0 C
H = 1.75 MAX. STD & Indicator Model H = 1.90 MAX. TTL Model H = 2.05 MAX. 9-Pin D-Sub Model Analog Indicators TTL
© 2013 TELEDYNE RELAYS (800) 284-7007 • www.teledynecoax.com CCRT-53S/CRT-53S Page 3 CCRT-53S\\CRT-53S\\082013\\Q3 Series CCRT-53S/CRT-53S Internal 50Ω Termination DC-26.5 GHz Failsafe SPDT Coaxial Switch COAX SWITCHES TYPICAL NARROWBAND RF INSERTION LOSS PERFORMANCE CURVES RF NOTES -1.0 -0.9 -0.8 -0.7 -0.6 -0.5 -0.4 -0.3 -0.2 -0.1 0.0 0123456 Insertion Loss (dB) Frequency (GHz) Insertion Loss ( DC-6 GHz ) -1.0 -0.9 -0.8 -0.7 -0.6 -0.5 -0.4 -0.3 -0.2 -0.1 0.0 6789 1 0 1 1 1 2 Insertion Loss (dB) Frequency (GHz) Insertion Loss ( 6-12 GHz ) -1.0 -0.9 -0.8 -0.7 -0.6 -0.5 -0.4 -0.3 -0.2 -0.1 0.0 12 13 14 15 16 17 18 Insertion Loss (dB) Frequency (GHz) Insertion Loss ( 12-18 GHz ) -1.0 -0.9 -0.8 -0.7 -0.6 -0.5 -0.4 -0.3 -0.2 -0.1 0.0 18 19 20 21 22 Insertion Loss (dB) Frequency (GHz) Insertion Loss ( 18-22 GHz ) -1.0 -0.9 -0.8 -0.7 -0.6 -0.5 -0.4 -0.3 -0.2 -0.1 0.0 22 23 24 25 26 Insertion Loss (dB) Frequency (GHz) Insertion Loss ( 22-26.5 GHz )
CCRT-53S/CRT-53S Page 4 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE © 2013 TELEDYNE COAX SWITCHES CCRT-53S\\CRT-53S\\082013\\Q3 Series CCRT-53S/CRT-53S Internal 50Ω Termination DC-26.5 GHz Failsafe SPDT Coaxial Switch COAX SWITCHES TYPICAL NARROWBAND RF ISOLATION PERFORMANCE CURVES RF NOTES -140 -120 -100 -80 -60 -40 -20 0123456 Isolation (dB) Frequency (GHz) Isolation ( DC-6 GHz ) -140 -120 -100 -80 -60 -40 -20 6 7 8 9 10 11 12 Isolation (dB) Frequency (GHz) Isolation ( 6-12 GHz ) -140 -120 -100 -80 -60 -40 -20 12 13 14 15 16 17 18 Isolation (dB) Frequency (GHz) Isolation ( 12-18 GHz ) -140 -120 -100 -80 -60 -40 -20 18 18.5 19 19.5 20 20.5 21 21.5 22 Isolation (dB) Frequency (GHz) Isolation ( 18-22 GHz ) -140 -120 -100 -80 -60 -40 -20 Isolation (dB) Frequency (GHz) Isolation ( 22-26.5 GHz )
© 2013 TELEDYNE RELAYS (800) 284-7007 • www.teledynecoax.com CCRT-53S/CRT-53S Page 5 CCRT-53S\\CRT-53S\\082013\\Q3 Series CCRT-53S/CRT-53S Internal 50Ω Termination DC-26.5 GHz Failsafe SPDT Coaxial Switch COAX SWITCHES TYPICAL NARROWBAND RF VSWR PERFORMANCE CURVES RF NOTES 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 0123456 VSWR Frequency (GHz) VSWR ( DC-6 GHz ) 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 6789 1 0 1 1 1 2 VSWR Frequency (GHz) VSWR ( 6-12 GHz ) 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 12 13 14 15 16 17 18 VSWR Frequency (GHz) VSWR ( 12-18 GHz ) 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 18 18.5 19 19.5 20 20.5 21 21.5 22 VSWR Frequency (GHz) VSWR ( 18-22 GHz ) 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 VSWR Frequency (GHz) VSWR ( 22-26.5 GHz )
CCRT-53S/CRT-53S Page 6 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE © 2013 TELEDYNE COAX SWITCHES CCRT-53S\\CRT-53S\\082013\\Q3 Series CCRT-53S/CRT-53S Internal 50Ω Termination DC-26.5 GHz Failsafe SPDT Coaxial Switch COAX SWITCHES Power Handling vs. Frequency Estimates based on the following reference conditions:
- Ambient temperature of 40°C or less
- Sea level operation
- Load VSWR of 1.20:1 maximum
- No high-power (hot) switching Please contact Teledyne Coax Switches for derating factors when applications do not meet the foregoing reference conditions. 3000Power (W) Frequency GHz 2000 1000 800 600 400 300 200 100 STANDARD SMA SWITCHES TYPICAL POWER PERFORMANCE CURVE
© 2013 TELEDYNE RELAYS (800) 284-7007 • www.teledynecoax.com CCRT-53S/CRT-53S Page 7 CCRT-53S\\CRT-53S\\082013\\Q3 Series CCRT-53S/CRT-53S Internal 50Ω Termination DC-26.5 GHz Failsafe SPDT Coaxial Switch COAX SWITCHES Actuator An actuator is the electromechanical mechanism that transfers the RF contacts from one position to another upon DC command. Arc Suppression Diode A diode is connected in parallel with the coil. This diode limits the “reverse EMF spike” generated when the coil de- energizes to 0.7 volts. The diode cathode is connected to the positive side of the coil and the anode is connected to the negative side. Date Code All switches are marked with either a unique serial number or a date code. Date codes are in accordance with MIL- STD-1285 Paragraph 5.2.5 and consist of four digits. The fi rst two digits de fi ne the year and the last two digits defi ne the week of the year (YYWW). Thus, 1032 identi fi es switches that passed through fi nal inspection during the 32nd week of 2010. Failsafe A failsafe switch reverts to the default or failsafe position when actuating voltage is removed. This is realized by a return spring within the drive mechanism. This type of switch requires the continuous application of operating voltage to select and hold any position. (Multi-position switches are normally open with no voltage applied). Indicator Indicators tell the system which position the switch is in. Other names for indicators are telemetry contacts or tellback circuit. Indicators are usually a set of internally mounted DC contacts linked to the actuator. They can be wired to digital input lines, status lights, or interlocks. Unless otherwise specifi ed, the maximum indicator contact rating is 30 Vdc, 50 mA, or 1.5 Watts into a resistive load. Internal Termination Unselected ports are internally terminated to a matched load. The load is 50 Ω resistive device. The max RF power rating is 2 Watts CW. Without the internal termination option, the unselected ports are open circuits. Isolation Isolation is the measure of the power level at the output connector of an unconnected RF channel as referenced to the power at the input connector. It is speci fi ed in dB below the input power level. SPDT Switch A single-pole double-throw, bi-directional switch that can be used as having one input and two outputs or two inputs and one output. Switching Time Switching time is the total interval beginning with the arrival of the leading edge of the command pulse at the switch DC input and ending with the completion of the switch transfer, including contact bounce. It consists of three parts: (1) inductive delay in the coil, (2) transfer time of the physical movement of the contacts, and (3) the bounce time of the RF contacts. TTL Switch Driver Option As a special option, switch drivers can be provided for both failsafe and latching switches, which are compatible with industry-standard low-power Schottky TTL circuits. Performance Parameters vs Frequency Generally speaking, the RF performance of coaxial switches is frequency dependent. With increasing frequency, VSWR and insertion loss increase while isolation decreases. All data sheets specify these three parameters as “worst case” at the highest operating frequency. If the switch is to be used over a narrow frequency band, better performance can be achieved. Actuator Current vs Temperature The resistance of the actuator coil varies as a function of temperature. There is an inverse relationship between the operating temperature of the switch and the actuator drive current. For switches operating at 28 VDC, the approximate actuator drive current at temperature, T, can be calculated using the equation: Magnetic Sensitivity An electro-mechanical switch can be sensitive to ferrous materials and external magnetic fi elds. Neighboring ferrous materials should be permitted no closer than 0.5 inches and adjacent external magnetic fi elds should be limited to a fl ux density of less than 5 Gauss. GLOSSARY IA Where: IT = Actuator current at temperature, T IA = Room temperature actuator current – see data sheet T = Temperature of interest in °C IT = Carrier Frequency 1 Carrier Frequency 2 PIM 3rd Order Frequency PIM 5th Order Fre- quency
870 MHz 893 MHz 847 MHz 824 MHz
–91 dBm –110 dBm –134 dBc –153 dBc SPECIAL FEATURE Switching High-Power or Highly Sensitive Signals Ensure the most linear response with the best galvanically matched contact system in the industry. Extremely low passive intermodulation is standard on all of our switches.
CCRT-53S/CRT-53S Page 8 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE © 2013 TELEDYNE COAX SWITCHES CCRT-53S\\CRT-53S\\082013\\Q3 Series CCRT-53S/CRT-53S Internal 50Ω Termination DC-26.5 GHz Failsafe SPDT Coaxial Switch COAX SWITCHES FAILSAFE CCRT-53S/CRT-53S PART NUMBER LIST * X = 1 (28Vdc), 2 (15Vdc), 3 (12Vdc) and 4 (24Vdc) PART NO.P ART NO.P ART NO.