MODEL NO.
C AT 82048
F E AT U R E S
440 - 480 MHz
0.25 dB LSB
Phase Vs. Atten.
5 Degrees
100 nSec Switching Speed
8 BIT
D A I C O
I n d u s t r i e s
Rev. - / Iss. 1
Attenuator 8 Section
CONTRASTING
COLOR BEAD
.600
.100 TYP
1
12
13
24
.77
1.100
.xx = .02
.xxx = .010
.018
.002 DIA
24 PLACES
PART IDENTIFICATION
.20
.20
1.27
T Y P I C A L P E R F O R M A N C E
a t 2 5
C
I. Loss
VSWR
FREQUENCY (MHz)
1.0
0
10
8
6
4
2
1.4
1.2
1.6
2.0
1.8
10
40
100
VSWR
I.L. (dB)
20
18
16
14
12
2.4
2.2
2.6
3.0
2.8
400
1000
3000
Parameter
Min Typ
Max Units
Conditions
Operating Frequency
440
480
MHz
DC Current
200
mA
At +5 VDC Supply
150
mA
At -15 VDC Supply
Control Type
TTL
8 Line
Logic "1" = Attenuation
Control Current
High
10
A
VIH = +2.7 V
Low
10
A
VIL = +0.5 V
Insertion Loss
5.2
5.9
dB
Attenuation
LSB
0.25
dB
Range
0
63.75
dB
.25, 0.5, 1, 2, 4, 8, 16, 32 dB
Accuracy
dB
0.25 dB
20%
0.5 dB
10%
1.0 dB
5%
Monotonicity
All Other
3%
Phase Vs. Atten
2
DEG
Each Bit
5
DEG
Total
VSWR
1.2/1
1.5/1
Impedance
50
OHMS
Switching Speed
70
100
nSec
50% TTL to 90% / 10% RF
Transition (Rise/Fall) Time
8
nSec
10% / 90% or 90% / 10% RF
Switching
(Video)
Transients
0.63
1.0
mVp-p
External BPF, 5 Section,
BW = 460
3 MHz, 0.43 mV
Intercept Points
2nd
+55
dBm
3rd
+34
dBm
RF Power
Operate
+20
dBm
0.1 dB Comp. @ 460MHz
No Damage
+23
dBm
Operating Temperature
-30
+25
+75
C
TA
G U A R A N T E E D P E R F O R M A N C E
16dB
4dB
2dB
1dB
.5dB
.25dB
32dB
GND
GND
GND
23
22
21
20
18
19
17
15
14
13
10
9
8
7
6
5
4
2
1
24
+5V
IN/OUT
OUT/IN
"1"
"0"
"0"
"0"
"0"
"0"
"0"
11
GND
16
GND
GND
GND
GND
GND
GND
GND
GND
3
C1
C2
C3
C4
C5
C6
C8
RF
RF
C7
8dB
"0"
12
-15V
16dB
4dB
2dB
1dB
.5dB
.25dB
32dB
8dB
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