Model: SDLVA-0120-70       


Model No.: SDLVA-0120-70 is a Successive Detection Video Log Amplifier (SDLVA) that operates over the 0.2 to 2.0 GHz Frequency Range (Useful Range from 0.1 to 2.5 GHz).  These units have a Dynamic Range of 65 to 70dB, a TSS of -67 dBm and a Nominal Video Bandwidth of 20 MHz. Furthermore, these units are designed using cutting edge GaAs Technology which provides stunning performance and reliability in a compact package making it an optimum solution for high speed channelized receiver applications.  These units offer Typical Fast Rise Time of <20 nS, Rapid Fall time of <25 nS as well as Superior Delay Time of 8 nS.

The Log Slope is 25 mV/dB and the Accuracy is less than ±1.0 dB over hte -60 to 0 dBm Power Input Range.  Dynamic Range can be Extended to -65/+5 with Log Error of ±1.5 dB.  Options are available with adjustable logging slope and DC offsets. 

Guaranteed Rise Times are less than 25 nS and Maximum Recovery Times are less than 30 nS.  Recovery Times at Lower Power are faster. 

SDLVA-0120-70 SDLVA is a commercially screened and characterized from -55ºC to +85ºC.  Sizes available are 3.75" x 1.50" x 0.50" or to any other customized configurations desired.

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Product Feature

Test Report


Frequency Range 0.2 to 2.0 GHz (useable from 0.1 to 2.5 GHz)
Dynamic Range > 65dB
Log Linearity ±1.2dB MAX. (-60 dBm to 0 dBm), ±0.8 dB TYP
Log Linearity ±1.5dB MAX. (-65dBm TO +5dBm) ±1.2 dB TYP.
Minimum Log Voltage -60 dBm (-65 dBm TYP)
Maximum Log Voltage +5 dBm (+8 dBm TYP)
VSWR Input 1.8:1 MAX., (1.5:1 TYP).
Tangential Sensitivity -65 dBm Minimum (-70 dBm TYP)
Limited IF Output -10 dBm
Maximum RF Input Power +10 dBm
Log Video Output Coupling DC
Log Video Maximum Output Voltage 2.7 v
Log Video Output Rise Time 25 ns Maximum
Log Video Output Fall Time 30 ns Maximum
Log Video Output Settling Time 40 ns Maximum
Log Video Output DC Offset 0.1 v Nominal (Adjustable)
Log Video Output Slope 25 mV/dB Nominal (adjustable to 30 mV/dB)
Log Video Output Variation with Frequency ±0.5 mV/dB (Over 80 MHz RF Bandwidth)
Log Video Output Variation with Temperature ±1mV Maximum
Log Video Propagation Delay 10 ns Maximum, 7 nS Typical
Log Video Load 100 ohms ±10%
DC Power (+V) +7 to +18 Volts @ 100 mA
(120 mA for Extended Dynamic Range)
DC Power (-V) -7 to -18 Volts @ 190 mA
Size 3.75 " x 1.50 " x 0.40"

Environmental Ratings:

Temperature:  -40ºC to +71 ºC Operating
 -65 ºC to +100 ºC Non-Operating
 Humidity:  MIL-STD-202F, Method 103B Cond. B
 Shock:  MIL-STD-202F, Method 213B Cond. B
 Vibration:  MIL-STD-202F, Method 204D Cond. B
 Altitude:  MIL-STD-202F, Method 105C Cond. B
 Temperature Cycle:  MIL-STD-202F, Method 107D Cond. A