DIA
.25
.20
1
12
PART
IDENTIFICATION
12 PLACES
.60
TYP
TYP
.400
.200
.100
.200
45
.55
.018
.002 DIA
MODEL NO.
D A 0 9 8 4 - 1
F E AT U R E S
10 - 1000 MHz
0.8 mA, +5 VDC
1 dB LSB, 15 dB Range
20 nSec Switching Speed
12 nSec Rise Time
TTL Control
12 Pin TO-8 Package
See DA0784-1 For Surface Mount Package
4 BIT
D A I C O
I n d u s t r i e s
Rev. C / Iss. 1
GaAs 4 Section Attenuator
10
11
12
1
RF
IN/OUT
7
RF
OUT/IN
3
9
2,4-6,8
GND +5V
8 dB
4 dB
2 dB
1 dB
"1"
"0"
"0"
"0"
CONT 4
CONT 3
CONT 2
CONT 1
8 dB
4 dB
2 dB
1 dB
T Y P I C A L P E R F O R M A N C E
a t 2 5
C
400
40
4
1.0
1.2
1.4
1.6
1.8
2.0
2.2
3.0
2.5
2.0
1.5
1.0
0.5
0
VSWR
I.L. (dB)
3000
1000
100
10
1
VSWR
I.L. (dB)
FREQUENCY (MHz)
Parameter
Min Typ
Max Units
Conditions
Operating Frequency
10
1000
MHz
DC Current
0.8
2.0
mA
At +5 VDC Supply
Control Type
TTL
4 Line
Logic "0" = Thru
Logic "1" = Attenuation
Control Current
High
0
20
A
VIH = +2.7 Volts
Low
0
20
A
VIL = 0.5 Volts
Insertion Loss
1.9
2.5
dB
MHz
Attenuation
LSB
1
dB
Range
15
dB
1, 2, 4, 8
Accuracy
dB
+0.15 dB +2% of Atten.
Setting in dB
-0.35 dB +2% of Atten.
Setting in dB
VSWR
1.2/1
1.6/1
Impedance
50
OHMS
Switching Speed
20
30
nSec
50% TTL - 90% / 10% RF
Transition (Rise/Fall) Time
12
nSec
10% / 90% - 90% / 10% RF
Switching
(Video)
Transients
48
mV
Peak Value
Intercept Points
2nd
+54
dBm
70 MHz / 50 MHz
3rd
+38
dBm
35 MHz / 50 MHz
RF Power
Operate
+9
+6
dBm
0.1 dB Compression
(<50 MHz)
+14
+10
dBm
0.1 dB Compression
(>50 MHz)
No Damage
+23
dBm
Operating Temperature
-55
+25
+85
C
TA
G U A R A N T E E D P E R F O R M A N C E
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