Page 1
FEATURES
5 BIT
10 - 1000 MHz
1 mA, +5 VDC
1 dB LSB, 31 dB Range
38 nSec Switching Speed
12 nSec Transition Time
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.
DA0885
GaAs 5 Section Attenuator
IN/OUT
GND GND GND GND GND GND GND GND GND GND
24 23 22 21 20 19 18 17 16 15 14 13
• ••••••••
•• •• •• •• ••
•••••
••
+5V GND
CONT CONT CONTGND GND GND
16DB 1DB 4DB
"1" "0" "0"
6
CONT
2DB
"0"
CONT
N/C GND
8DB
"0"
RFRF
IN/OUT
•
12111087549321
VSWR
12.0
2.2
2.0
10.0
8.01.8
6.01.6
1.4
4.0
2.0
1.2
1.0 0
CONTRASTING
COLOR BEAD
TYPICAL PERFORMANCE
I.L. (dB)
1
5
at 25°C
50
10
FREQUENCY (MHz)
100
I. LOSS
VSWR
.xx = .02
.xxx = .010
1000500
3000
GUARANTEED PERFORMANCE
Parameter Min Typ Max Units Conditions
Operating Frequency 10 1000 MHz
DC Current 15mA At +5 VDC Supply
Control Type TTL 5 Line
Control Current
High
Low
0 ±40 µA VIH = +3.0 V
0 ±40 µA VIL = +0.5 V
Insertion Loss 3.9 5.0 dB 10 - 100 MHz
Attenuation
LSB
Range
Accuracy
Vs. Phase
5.1 6.5 dB 100 - 1000 MHz
1dB
031dB1, 2, 4, 8, 16
0.6 ±5 DEG At 240 MHz
VSWR 1.2/1 1.4/1
Impedance 50 OHMS
Switching Speed 38 50 nSec 50% TTL to 90% / 10% RF
Transition (Rise/Fall) Time 12 nSec 90% / 10% or 10% / 90% RF
Switching (Video) Transients 130 mV Peak Value
Intercept Points
RF Power
2nd
3rd
Operate
No Damage
+65 dBm 70 MHz / 50 MHz
+44 dBm 35 MHz / 50 MHz
+13 +10 dBm 0.1 dB Compression
+27 dBm
Operating Temperature -55 +25 +125 °CTA
Logic “0” = Thru
Logic “1” = Attenuation
dB ± (0.25 dB ± 2% of Atten.
Setting in dB)
DAICO I ndustries
Rev. A / Iss. 1
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