Surface Mount
LRDC-20-2J+
LRDC-20-2J
Directional Coupler
50Ω
300 to 1100 MHz
Maximum Ratings
Operating Temperature
Storage Temperature
Features
• low mainline loss, 0.25 dB typ.
• high directivity, 17 dB typ.
• aqueous washable
-40°C to 85 °C
-55°C to 100°C
CASE STYLE: QQQ569
PRICE: $15.95 ea. QTY (1-9)
• J-leads for strain relief and excellent solderability
+ 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
Applications
• VHF/UHF
• cellular
• communications
• signal sampling
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
MU
fL-fU
Nom.
Flatness
±1.3
Typ. Max.
Typ. Min.
17 10
Typ. Max. Max.
300-1100 20.5±1.0
0.25 0.6
1.2
2.0
2.0
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
300.00
438.46
576.92
715.38
807.69
900.00
950.00
1000.00
1050.00
1100.00
0.30
0.26
0.26
0.28
0.30
0.32
0.34
0.35
0.37
0.39
22.27
22.11
21.96
21.80
21.67
21.51
21.43
21.33
21.21
21.10
18.46
17.25
16.06
15.20
14.83
14.54
14.42
14.34
14.26
14.24
15.52
18.41
20.51
22.14
22.93
23.56
23.84
23.91
23.80
23.78
15.46
18.43
20.53
22.18
23.08
23.66
24.00
24.09
24.04
24.01
16.06
19.61
24.62
31.13
31.10
27.46
33.75
25.94
32.75
25.15
Suggested Layout,
Tolerance to be within ±.002
Outline Dimensions ( inch
)
mm
A
.390
9.91
B
.31
7.87
C
.225
5.72
D
.060
1.52
E
--
--
F
.100
2.54
G
.045
1.14
H
.420
10.67
J
.120
3.05
K
.060
1.52
L
.100
2.54
M
--
--
wt
grams
0.50
LRDC-20-2J
COUPLING & DIRECTIVITY
LRDC-20-2J
MAINLINE LOSS
at RF level of -10 dBm
at RF level of -10 dBm
1.0
0.8
0.6
0.4
0.2
0.0
40
30
20
10
0
DIRECTIVITY
COUPLING
Demo Board MCL P/N: TB-31
Suggested PCB Layout (PL-087)
300
460
620
780
940
1100
300
460
620
780
940
1100
FREQUENCY (MHz)
FREQUENCY (MHz)
Electrical Schematic
LRDC-20-2J
RETURN LOSS
at RF level of -10 dBm
50
40
30
20
10
0
IN
OUT
CPL
300
460
620
780
940
1100
FREQUENCY (MHz)
®
minicircuits.com
Mini-Circuits
REV. A
M119986
LRDC-20-2J
WZ/TD/CP/AM
081120
ISO 9001 ISO 14001 AS 9100 CERTIFIED
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