Surface Mount
ADC-18-4-75+
ADC-18-4-75
Directional Coupler
75Ω 20 to 1000 MHz
Maximum Ratings
Operating Temperature
Storage Temperature
Features
CASE STYLE: CD542
PRICE:$6.95 ea. QTY (10-49)
• wideband, 20-1000 MHz
-40°C to 85°C
-55°C to 100°C
• low mainline loss, 0.4 dB typ.
• good directivity, 18 dB typ.
• excellent coupling flatness, ±0.15 dB typ.
• aqueous washable
+ RoHS compliant in accordance
with EU Directive (2002/95/EC)
The +Suffix identifies RoHS Compliance. See our web site
for RoHS Compliance methodologies and qualifications.
Pin Connections
INPUT
OUTPUT
1
• protected by U.S Patents 6,133,525 & 6,140,887
6
3
2
4
5
COUPLED
Applications
• cable tv
• communications
GROUND
75Ω TERM EXTERNAL
ISOLATE (DO NOT USE)
Directional Coupler Electrical Specifications
FREQ.
(MHz)
COUPLING
(dB)
MAINLINE LOSS1
(dB)
DIRECTIVITY
(dB)
VSWR POWER
(:1) INPUT, W
Outline Drawing
L
M
U
L
M
U
L
MU
fL-fU
Nom.
Flatness
±0.5
Typ. Max.
Typ. Max.
Typ. Max.
Typ. Min.
Typ. Min.
Typ. Min.
Typ. Max. Max.
20-1000 17.4±0.5
0.4 0.8
0.4 1.0
0.5 1.2
17
14
18
14
17
12
1.15 1.0 1.0
L= 20-200 MHz
M= 200-500 MHz
U= 500-1000 MHz
1. Mainline loss includes theoretical power loss at coupled port.
Typical Performance Data
Frequency
(MHz)
Mainline Loss
(dB)
Coupling
Directivity
(dB)
Return Loss
(dB)
PCB Land Pattern
(dB)
In-Out
In-Cpl
In
Out
Cpl
20.60
35.30
50.00
225.00
400.00
0.41
0.37
0.35
0.36
0.40
17.38
17.41
17.38
17.35
17.37
17.05
17.17
17.23
17.74
17.93
25.15
26.48
27.69
28.16
24.88
26.01
29.41
31.77
31.23
24.39
19.37
21.55
22.76
26.30
30.25
492.00
630.00
768.00
895.00
1000.00
0.43
0.46
0.51
0.56
0.60
17.41
17.46
17.53
17.57
17.63
17.78
17.33
16.72
16.33
16.23
22.40
20.56
19.50
19.13
18.76
21.78
19.28
18.43
18.15
18.16
33.74
44.74
34.24
27.95
26.97
Suggested Layout,
Tolerance to be within .002
inch
Outline Dimensions (
)
mm
A
.272
6.91
B
.310
7.87
C
.220
5.59
D
.100
2.54
E
.112
2.84
F
.055
1.40
G
ADC-18-4-75
MAINLINE LOSS
ADC-18-4-75
COUPLING & DIRECTIVITY
.100
2.54
at RF level of -10 dBm
at RF level of -10 dBm
1.0
20
18
16
14
H
.030
0.76
J
.026
0.66
K
.065
1.65
L
.300
7.62
wt
grams
0.20
COUPLING
DIRECTIVITY
0.8
0.6
0.4
0.2
0.0
Demo Board MCL P/N: TB-08
Suggested PCB Layout (PL-042)
0
200
400
600
800
1000
0
200
400
600
800
1000
FREQUENCY (MHz)
FREQUENCY (MHz)
Electrical Schematic
ADC-18-4-75
RETURN LOSS
at RF level of -10 dBm
50
40
30
20
10
IN
OUT
600
CPL
800
0
200
400
1000
FREQUENCY (MHz)
®
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Mini-Circuits
REV. D
M119986
ED-6814/1
ADC-18-4-75
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081111
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P.O. Box 350166, Brooklyn, New York 11235-0003 (718) 934-4500 Fax (718) 332-4661 For detailed performance specs & shopping online see Mini-Circuits web site
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IF/RF MICROWAVE COMPONENTS