Model: GMDA-CW0518-30


PMI Model No. GMDA-CW0518-30 is a CW immune detector logarithmic video amplifier (DLVA) designed to operate over the 500 MHz to 18.0 GHz frequency range.  This model is designed for ultra high speed applications while maintaining flatness and accuracy.  

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Product Feature


Frequency Range 0.5 to 18.0 GHz
Output Voltage Flatness ±0.5 V Across the band
TSS -43 dBm min (10 MHz Video Bandwidth)
Video Test Output Fixed 450 mV ±100 mV
DC Offset of Test Output +1.2 V ±10%
Impedance Meet all requirements with 50 OHM load
Log Slope

  Input Power -40 to -10dBm 280 mV/dB with ±12 mV/dB tolerance
  Input Power -10 to 0dBm Transition from 280 mV/dB tolerance
  Input Power 0 to +20dBm 0 mV/dB with ±12 mV/dB tolerance
Log Linearity  
  Input Power -40 to -10dBm ±1.0 dB
  Input Power -10 to 0dBm Transition from 280mV/dB to 0mV/dB
  Input Power 0 to +20dBm ±1.0 dB
Input Power +25dBm CW max (no damage)
Input VSWR 2.5:1 (-40 dBm to -10 dBm)
Output Impedance 1K OHM
Output Load 1M OHM
Minimum Input Pulse Width 100 ns
Maximum Pulse Width 150 µs
Rise Time(10% to 90%) 50 ns max, Measured at input of -35 dBm
Recovery Time 5 µs max, At input pulse of -10dBm with pulse width of 150 us
DC Offset +1.35 V ±10%
Dynamic Range 63 dB (-43 to +20 dBm)
Power Supply

+15 V ±0.15 V @ 75 mA

-15 V ±0.15V @ 75 mA

Connectors SMA(F)
Size 2.3" x 2.3" x 0.47"
Finish Nickel Plating

Environmental Ratings

Temperature:  -54ºC to +85 ºC Operating
 -54 ºC to +95 ºC Non-Operating
Altitude Sea Level to 55,000 Feet
Temperature Shock 1 Deg/Sec over operating temperature range
Vibration: MIL-STD-202F, Method 204D Cond. B
Shock  MIL-STD-810F, Method 516.5, Procedure VI