The +Suffix has been added in order to identify RoHS
Compliance. See our web site for RoHS Compliance
methodologies and qualifications.
Applications
• CATV
Directional Coupler Electrical Specifications
FREQ.
(MHz)
COUPLING
(dB)
L
Nom.
5-1000
25±1.0
Flatness
±2.0
Typ.
0.1
Max.
0.5
Typ.
0.1
Outline Drawing
MAINLINE LOSS
1
(dB)
M
0.4
0.3
U
Typ.
27
0.7
L
Min.
13
Max. Typ. Max.
DIRECTIVITY
(dB)
M
Typ.
25
Min.
14
Typ.
20
U
Min.
12
VSWR POWER
(:1)
INPUT, W
Typ.
1.2
Max.
0.5
L= 5-50 MHz M= 50-500 MHz U= 500-1000 MHz
1. Mainline loss includes theoretical power loss at coupled port.
Typical Performance Data
PCB Land Pattern
Frequency
(MHz)
5.00
10.00
50.00
100.00
260.00
500.00
600.00
700.00
850.00
1000.00
Mainline Loss
(dB)
In-Out
0.09
0.15
0.13
0.12
0.11
0.16
0.25
0.31
0.40
0.47
ADC-25-4-75+
MAINLINE LOSS
Coupling
(dB)
In-Cpl
26.38
26.42
26.44
26.39
26.01
25.18
24.96
24.98
25.33
25.41
Directivity
(dB)
22.91
27.82
32.03
28.51
21.92
19.14
18.98
19.48
23.30
19.99
In
22.68
28.87
38.74
44.75
31.00
30.93
33.03
31.89
28.69
29.32
Return Loss
(dB)
Out
22.47
28.63
37.83
38.86
30.67
27.38
26.45
26.89
30.04
29.04
Cpl
22.43
28.52
38.85
37.28
25.64
21.21
20.18
19.63
19.36
18.66
Suggested Layout,
Tolerance to be within ±.002
Outline Dimensions (
inch
)
mm
A
.272
6.91
H
.030
0.76
B
.310
7.87
J
.026
0.66
C
.220
5.59
K
.065
1.65
D
.100
2.54
L
.300
7.62
E
.162
4.11
F
.055
1.40
G
.100
2.54
ADC-25-4-75+
COUPLING & DIRECTIVITY
35
COUPLING & DIRECTIVITY
(dB)
30
25
20
15
0
200
400
600
FREQUENCY (MHz)
800
1000
at RF level of -4.3 dBm
0.5
MAINLINE LOSS (dB)
0.4
0.3
0.2
0.1
0
0
at RF level of -4.3 dBm
wt
grams
0.25
COUPLING
DIRECTIVITY
Demo Board MCL P/N: TB-08
Suggested PCB Layout (PL-042)
200
400
600
800
1000
FREQUENCY (MHz)
ADC-25-4-75+
RETURN LOSS
50
RETURN LOSS (dB)
45
40
35
30
25
20
15
0
200
400
600
FREQUENCY (MHz)
800
1000
at RF level of -4.3 dBm
Electrical Schematic
OUT
CPL
IN
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TM
®
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