FE AT UR ES
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
MODEL NO.
DA 0984- 1
GaAs 4 Section Attenuator
4 BIT
PART
IDENTIFICATION
.55
DIA
RF
IN/OUT
7
8 dB
4 dB
2 dB
1 dB
RF
OUT/IN
3
•
.20
.25
•
•
•
•
•
•
•
.60
.100
TYP
.018±.002 DIA
12 PLACES
12
1
2,4-6,8 9
10
GND +5V CONT 4
8 dB
"1"
11
CONT 3
4 dB
"0"
12
CONT 2
2 dB
"0"
1
CONT 1
1 dB
"0"
.200
TYP
45˚
.200
.400
G U ARANT E ED P ERF OR MANCE
Parameter
Min Typ Max Units
10
0.8
TTL
1000
2.0
MHz
mA
Conditions
At +5 VDC Supply
4 Line
Logic “0” = Thru
Logic “1” = Attenuation
VIH = +2.7 Volts
VIL = 0.5 Volts
MHz
1, 2, 4, 8
+0.15 dB +2% of Atten.
Setting in dB
-0.35 dB +2% of Atten.
Setting in dB
TYPI CA L P E RF O R MA N C E
a t 2 5
°C
Operating Frequency
DC Current
Control Type
2.2
3.0
I.L. (dB)
VSWR
Control Current
2.0
2.5
High
Low
1.8
2.0
I.L. (dB)
Insertion Loss
Attenuation
LSB
Range
Accuracy
0
0
1.9
1
15
±20
±20
2.5
µA
µA
dB
dB
dB
dB
1.6
1.5
1.4
1.0
VSWR
1.2
0.5
1.0
0
1
4
10
40
100
FREQUENCY (MHz)
400
1000
3000
VSWR
Impedance
Switching Speed
Transition (Rise/Fall) Time
Switching
(Video)
Transients
Intercept Points
2nd
3rd
RF Power
Operate
No Damage
1.2/1
50
20
12
48
+54
+38
+9
+14
-55
+25
1.6/1
30
OHMS
nSec
nSec
mV
dBm
dBm
dBm
dBm
dBm
°C
50% TTL - 90% / 10% RF
10% / 90% - 90% / 10% RF
Peak Value
70 MHz / 50 MHz
35 MHz / 50 MHz
0.1 dB Compression
(<50 MHz)
0.1 dB Compression
(>50 MHz)
TA
Operating Temperature
+6
+10
+23
+85
DA I C O
In d u s t r i e s
Rev. C / Iss. 1
DAICO [ DAICO INDUSTRIES, INC. ]
