PSEUDO AC COUPLED DETECTOR LOG AMPLIFIER (ERDLA)

ERDLA21802-31G-C

 

    SPECIFICATIONS
Frequency Range 2 to 18 GHz Max Input Level: 1W CW, 100W peak
Frequency Flatness ±2.0 dB max VSWR (50ohm) 2.2:1 max
TSS -71dBm max Signal Capability Pulse (100 ns to 300µs)
Dynamic Range -65 dBm to 0 dBm Video Output Drive: Through 100 ft, 75 Ohm cable (RG11)
Log Slope 70 ± 3 mV/dB
Log Linearity @ 25ºC ±1.0 dB max Propagation Delay : 50 nsec max
Output Characteristic DC offset/ noise 0 ± 70 mV

Baseline noise level: 120 mv PP

Pulse Density

 

10% DC for PW= 100 nsec

70% DC for PW = 300 µsec

DC Supply

+ 15 ± 1 VDC @ 400 mA max

– 15 ± 1 VDC @ 100 mA max

Log Accuracy from 70 mV/dB  Absolute ±2.4 dB max

±2.65 dB max

Video Output Voltage +350 ± 125 mv @ -65 dBm Operating Case temp: 0 to +85ºC

 

Storage temp : -54 to +125ºC

 

MTBF: 40k Hr @ 50 ºC

 

Pulse Density

Variation due to Duty cycle

100ns /10%.VS 300  ųsec/ 70%

1 dB change max @ -10 dBm

Output Rise Time 25 nSec Typ 28ns max
Settling Time 50 ns (of final value) @-10 dBm
 

Environmental Stress Screening, ESS

 

(1)           Stabilization Bake: 48 hrs at 85 C

 

(2)           Operating temp, 0 to +85°C

 

(3)           Burn in :+85°C for 48 hr.

 

(4)           . Thermal Shock 0 to +85 C, 30 min dwell time at each temp; 15 sec transfer time; 10 cycles

 

(5)           Random Vibration: 16.8 RMS all thru axis for 15 min, 20 to 2000 Hz

Recovery Time (±1.0 dB) 1 µsec. max measured from 90% trailing edge of 50 ms to within ± 1.0 dB of baseline @ -10 dBm
Droop: (to 300 ųs) 70 mV max > -65 dBm
CW Immunity range TSS to -40 dBm
CW Immune time 4 msec max (@ -40 dBm)
CW Recovery time 10 ųsec nax (@-40 dBm)
Baseline Shift 100 mV max, with CW@ -40 dBm
CW Immunity Pulse on CW 500 Mhz Diff. @ Pulse – 30 dBm

@CW = -50 dBm: PA, no loss

@ CW = -40 dBm: PA, 2dB loss max

@ CW > 40 dBm : PA, ok

 

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