Surface Mount
Directional Coupler
LRDC-12-1-75
75Ω
5 to 600 MHz
Maximum Ratings
Operating Temperature
Storage Temperature
Features
• low mainline loss, 0.5 dB typ.
• high directivity, 21 dB typ.
-40°C to 85°C
-55°C to 100°C
CASE STYLE: QQQ130
PRICE: $11.95 ea. QTY (1-9)
Applications
• VHF/UHF
• signal sampling
• communications
• cable tv
+ 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
6
OUTPUT
1
4
COUPLED
GROUND
2,5
3
ISOLATE (DO NOT USE)
Directional Coupler Electrical Specifications
Outline Drawing
FREQ.
(MHz)
COUPLING
(dB)
MAINLINE LOSS1
(dB)
DIRECTIVITY
VSWR POWER
(:1) INPUT, W
(dB)
L
M
U
L
M
U
L
MU
Max. Max.
1.0 1.0
fL-fU
Nom.
12.2±0.5
Flatness
±0.6
Typ. Max. Typ. Max. Typ. Max. Typ. Min. Typ. Min. Typ. Min.
Typ.
5-600
0.4
0.8
0.5
1.0
0.8
1.5
20
17
21
18
20
12
1.3
L = low range [fL to 10 fL] M = mid range [10 fL to fU/2] U = upper range [fU/2 to fU]
1. Mainline loss includes theoretical power loss at coupled port.
PCB Land Pattern
Typical Performance Data
Frequency
(MHz)
Mainline Loss
(dB)
Coupling
Directivity
Return Loss
(dB)
(dB)
(dB)
In-Out
In-Cpl
In
Out
Cpl
5.00
6.00
8.00
0.68
0.67
0.66
0.67
0.69
0.71
0.77
0.79
0.84
0.92
12.25
12.24
12.24
12.24
12.26
12.27
12.28
12.20
12.11
12.05
27.30
27.29
27.30
27.29
25.97
23.92
22.07
20.71
19.85
19.38
24.93
25.25
25.59
25.75
24.35
21.73
19.81
18.62
18.13
18.26
36.02
37.90
41.55
45.26
29.52
23.91
20.80
19.03
18.22
18.28
24.62
24.76
24.92
24.96
24.21
23.15
21.77
20.45
19.44
18.73
Suggested Layout,
Tolerance to be within ±.002
10.00
Outline Dimensions ( inch
)
100.00
200.00
300.00
400.00
500.00
600.00
mm
A
.400
10.16
B
.31
7.87
C
.200
5.08
D
.10
2.54
E
.010
0.25
F
.100
2.54
G
.050
1.27
H
.420
10.67
J
.120
3.05
K
.060
1.52
L
.100
2.54
M
.020
0.51
wt
grams
0.55
LRDC-12-1-75
COUPLING & DIRECTIVITY
LRDC-12-1-75
MAINLINE LOSS
at RF level of -10 dBm
at RF level of -10 dBm
1.1
40
30
20
10
0
DIRECTIVITY
COUPLING
1.0
0.9
0.8
0.7
0.6
Demo Board MCL P/N: TB-34
Suggested PCB Layout (PL-043)
0
100
200
300
400
500
600
0
100
200
300
400
500
600
FREQUENCY (MHz)
FREQUENCY (MHz)
LRDC-12-1-75
RETURN LOSS
Electrical Schematic
at RF level of -10 dBm
50
40
30
20
10
IN
OUT
CPL
0
100
200
300
400
500
600
FREQUENCY (MHz)
®
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LRDC-12-1-75
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IF/RF MICROWAVE COMPONENTS