Kratos Microwave Electronics Division (KMED)

Full Line Product Catalog

Model 2578 SP4T Switch

Application Notes for RF Switches
The Model 2578 is a low cost high-performance terminated SP4T switch that operates over the full instantaneous bandwidth of 6 to 18 GHz with ON and OFF times of 250 nsec. Design features include an integrated circuit assembly of PIN diodes mounted in a microstrip transmission line. The Model 2578 is equipped with an integrated driver that is powered by +5 and -12 volt supplies. The proper currents required to switch the ports ON or OFF are provided by the driver, which is controlled by external logic signals.

PERFORMANCE CHARACTERISTICS

CHARACTERISTIC  

Frequency Range (GHz)
Min. Isolation (dB)
Max. Insertion Loss (dB)
Max. VSWR (ON/OFF)

6-18
55
3.5
2.0
  • Frequency range: 6 to 18 GHz
  • Isolation: up to 55 dB
  • Phase and amplitude Matched
  • Non-reflective
Low Cost SP4T Switch Model 2578 
Switching Time
    ON time ............................. 250 nsec max.
    OFF time ............................ 250 nsec max.
.
Power Handling Capability
 Without Performance   Degradation .............
500 mW cw or peak
.
 Survival Power
   Input to any "OFF" port............. 1W average, 10W peak (1 μsec max. pulse width)
   Input to any "ON" port.................. 1W average, 75W peak (1 μsec max. pulse width)
   Input to common port.................. 1W average, 75W peak (1 μsec max. pulse width)
.
Power Supply Requirements                                                                +5V ±5%, 135 mA
                                                                                                             -12V ±5%, 60 mA
.
Control Characteristics
  Control Input Impedance....... Schottky TTL, two unit loads. (A unit load is 2 mA sink current and 50 μA source current.)
  Control Logic .................... Logic "0" (-0.3 to +0.8V) for port ON. Logic "1" (+2.0 to +5.0V) for port OFF.
OPTION (G09) ENVIRONMENTAL RATINGS
Operating Temperature Range......................
-55°C to +110°C
Non-Operating Temperature Range............
-65°C to +125°C
Humidity...................................................... MIL-STD-202F, Method 103B, Cond. B (96 hrs. at 95%)
Shock........................................................ MIL-STD-202F, Method 213B, Cond. B (75G, 6 msec)
Vibration................................................. MIL-STD-202F, Method 204D, Cond. B (.06" double amplitude or 15G, whichever is less)
Altitude.................................................. MIL-STD-202F, Method 105C, Cond. B (50,000 ft)
Temp. Cycling....................................... MIL-STD-202F, Method 107D, Cond. A, 5 cycles
AVAILABLE OPTIONS
 option no Description
 G09  Guaranteed to meet Environmental Ratings
 G12  RoHS Compliant
 G18  REACH Compliant

DIMENSIONS AND WEIGHTS

Model 2578 SP4T Switch Dimensions and Weights
 
Dimensional Tolerances, unless otherwise indicated: .XX ±.02; .XXX ±.005
 


The information contained in this data sheet is basic marketing information and does not contain any export controlled information.