DAICO DAT41994 Datasheet
FEATURES
4 BIT
5 - 300 MHz
Low Insertion Loss
+51 dB Third Order Intercept
36 mV Transients
350 nSec Switching Speed
TTL Control
24 Pin DIP
PART IDENTIFICATION
1.27
.20
.20
1.100
.100 TYP
1
.600
.018±.002 DIA
24 PLACES
12
.77
1324
MODEL NO.
DAT42182
Attenuator 4 Section
RF
IN/OUT
24 23 22 21 20 19 18 17 16 15 14 13
•••••••••
2dB 4dB 8dB1dB
••••
••
+5V
N/C
“0” “0” “0” “0”
N/C = NO INTERNAL CONNECTION
GNDGNDGNDGNDGNDGNDGNDGNDGNDGND
GND8dB1dB
••••••••
RF
IN/OUT
121110987653421
-12VGNDN/C4dB2dBGNDGND
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
VSWR
CONTRASTING
COLOR BEAD
TYPICAL PERFORMANCE
I.L. (dB)
3.0
2.7
2.4
2.1
1.8
1.5
1.2
0.9
0.6
0.3
0
1410 40 100 400 1000 3000
at 25°C
FREQUENCY (MHz)
.xx = .02
.xxx = .010
I. LOSS
VSWR
GUARANTEED PERFORMANCE
Parameter Min Typ Max Units Conditions
Operating Frequency 5 300 MHz
DC Current 3.3 15 mA At +5 VDC Supply
Control Type TTL 4 Line
Logic “1” = Attenuation
Control Current
High
Low
Insertion Loss 0.92 2.0 dB
Attenuation
LSB
Range
0 15 dB 1, 2, 4, 8
Accuracy
VSWR 1.15/1 1.5/1
Impedance 50 OHMS
Switching Speed 350 700 nSec 50% TTL to 90% / 10% RF
Transition (Rise/Fall) Time 100 nSec 90% / 10% or 10% / 90% RF
Switching (Video) Transients 36 100 mV Peak Value
Intercept Points
RF Power
2nd
3rd
Operate
No Damage
Operating Temperature 0 +25 +50 °CTA
8.8 15 mA At -12 VDC Supply
140µA VIH = +2.7 Volts
140µA VIL = +0.5 Volts
1 dB
dB ± (0.25 dB +2% of Atten.
Setting in dB)
+75 +83 dBm 160 / 90 MHz
+45 +51 dBm 80 / 90 MHz
+25 +18 dBm 0.1 dB Compression
+27 dBm
DAICO I ndustries
Rev. N/D / Iss. 1
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