Directional Coupler
50/75
Ω
Maximum Ratings
Operating Temperature
Storage Temperature
Surface Mount
ADC-12-7550+
5 to 1000 MHz
-40°C to 85°C
-55°C to 100°C
Features
Pin Connections
INPUT 75Ω
OUTPUT 75Ω
COUPLED 50Ω
GROUND
50Ω TERM EXTERNAL
ISOLATE (DO NOT USE)
1
6
3
2
4
5
• wideband, 5-1000 MHz
• low mainline loss, 0.7 dB typ.
• excellent IN/OUT VSWR, 1.2:1 typ.
• unique circuit, 75
Ω
at IN/OUT and 50
Ω
at CPL
• aqueous washable
• protected by US Patents 6,133,525 & 6,140,887
• CATV
CASE STYLE: CD542
PRICE: $6.95 ea. QTY (10-49)
+ RoHS compliant in accordance
with EU Directive (2002/95/EC)
The +Suffix has been added in order to identify RoHS
Compliance. See our web site for RoHS Compliance
methodologies and qualifications.
Applications
Directional Coupler Electrical Specifications
FREQ. COUPLING at 50Ω
(MHz)
(dB)
Nom.
5-1000
12.5±1.0
Flatness
±1.0
1
Outline Drawing
MAINLINE LOSS at 75Ω
(dB)
M
Typ. Max.
0.7 1.2
1.0
U
Typ. Max.
0.85 1.8
13
L
Typ. Min.
10
DIRECTIVITY
(dB)
M
Typ. Min.
12
9
11
U
Typ. Min.
7
VSWR POWER
(:1)
INPUT
(W)
Typ.
1.5
Max.
1.0
L
Typ. Max.
0.6
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
Frequency
(MHz)
PCB Land Pattern
Mainline Loss
(dB)
In-Out
0.62
0.63
0.68
0.73
0.76
0.79
0.81
0.87
0.96
1.13
ADC-12-7550+
MAINLINE LOSS
Coupling
(dB)
In-Cpl
12.14
12.16
12.25
12.44
12.65
12.79
12.91
13.02
13.09
13.17
Directivity
(dB)
12.98
12.88
12.65
12.22
11.82
11.57
11.30
11.16
10.99
10.58
In
20.67
21.27
21.67
21.77
20.91
19.83
19.50
19.81
20.08
19.34
Return Loss
(dB)
Out
32.11
36.89
30.63
24.00
20.71
19.25
18.71
18.63
18.64
18.34
Cpl
27.86
27.24
21.83
16.13
13.09
11.53
10.32
9.57
9.14
8.69
5.00
45.00
124.00
272.00
420.00
540.00
675.00
800.00
900.00
1045.00
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
.112
2.84
F
.055
1.40
G
.100
2.54
wt
grams
0.20
ADC-12-7550+
COUPLING & DIRECTIVITY
COUPLING & DIRECTIVITY
(dB)
15
13.5
12
10.5
at RF level of -4.3 dBm
1.2
MAINLINE LOSS (dB)
1
0.8
0.6
0.4
at RF level of -4.3 dBm
Demo Board MCL P/N: TB-358
Suggested PCB Layout (PL-215)
COUPLING
9
0
200
DIRECTIVITY
800
1000
0
200
400
600
800
1000
FREQUENCY (MHz)
400
600
FREQUENCY (MHz)
40
RETURN LOSS (dB)
32
24
16
8
at RF level of -4.3 dBm
ADC-12-7550+
RETURN LOSS
Electrical Schematic
IN
OUT
CPL
0
200
400
600
FREQUENCY (MHz)
800
1000
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IF/RF MICROWAVE COMPONENTS
REV. A
M119986
ED-12367
ADC-12-7550+
DY/LC/CP/AM
081111
MINI [ MINI-CIRCUITS ]
