MODEL NO.
D A 0 8 5 7
F E AT U R E S
10 - 1000 MHz
1 mA, +5 VDC
2 dB LSB, 62 dB Range
38 nSec Switching Speed
12 nSec Transition Time
TTL Control
24 Pin DIP
See DA0757 for Surface Mount Version
5 BIT
D A I C O
I n d u s t r i e s
Rev. A / Iss. 1
GaAs 5 Section Attenuator
COLOR BEAD
CONTRASTING
.600
.100 TYP
.018
.002 DIA
24 PLACES
PART IDENTIFICATION
.20
1
12
13
24
.20
.77
1.100
1.27
.xx = .02
.xxx = .010
N/C = NO INTERNAL CONNECTION
"0"
16DB
+5V
GND
32DB
2DB
4DB
8DB
GND
GND GND GND
"0"
"0"
"1"
"0"
IN/OUT
RF
RF
IN/OUT GND GND GND GND GND GND GND GND GND GND
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
N/C
Parameter
Min Typ
Max Units
Conditions
Operating Frequency
10
1000
MHz
DC Current
1
5
mA
At +5 VDC Supply
Control Type
TTL
5 Line
Logic "0" = Thru
Logic "1" = Attenuation
Control Current
High
0
40
A
VIH = +3.0 V
Low
0
40
A
VIL = +0.5 V
Insertion Loss
4.0
5.2
dB
10 - 100 MHz
5.6
7.0
dB
100 - 1000 MHz
Attenuation
LSB
2
dB
Range
0
62
dB
2, 4, 8, 16, 32
Accuracy
dB
(0.25 dB
2% of Atten.
Setting in dB)
VSWR
1.2/1
1.4/1
Impedance
50
OHMS
Switching Speed
32
50
nSec
50% TTL to 90% / 10% RF
Transition (Rise/Fall) Time
18
nSec
90% / 10% or 10% / 90% RF
Switching
(Video)
Transients
215
mV
Peak Value
Intercept Points
2nd
+65
dBm
70 MHz / 50 MHz
3rd
+44
dBm
35 MHz / 50 MHz
RF Power
Operate
+13
+10
dBm
0.1 dB Compression
No Damage
+27
dBm
Operating Temperature
-55
+25
+125
C
TA
G U A R A N T E E D P E R F O R M A N C E
I. LOSS
I.L. (dB)
VSWR
T Y P I C A L P E R F O R M A N C E
a t 2 5
C
8.0
1.8
2.0
4.0
6.0
1.6
1.4
1.2
2.0
2.2
10.0
12.0
3000
1000
500
100
50
10
5
1
1.0
0
FREQUENCY (MHz)
VSWR
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