Directional Coupler
50Ω 300 to 1100 MHz
Features
-40°C to 85 °C -55°C to 100°C
Surface Mount
LRDC-20-2J+ LRDC-20-2J
Maximum Ratings
Operating Temperature Storage Temperature
• low mainline loss, 0.25 dB typ. • high directivity, 17 dB typ. • aqueous washable • J-leads for strain relief and excellent solderability
CASE STYLE: QQQ569 PRICE: $15.95 ea. QTY (1-9)
Pin Connections
INPUT OUTPUT COUPLED GROUND ISOLATE (DO NOT USE) 6 1 4 2,5 3
Applications
+ 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.
• VHF/UHF • cellular • communications • signal sampling
Outline Drawing
Directional Coupler Electrical Specifications
FREQ. (MHz) COUPLING (dB) MAINLINE LOSS1 (dB) DIRECTIVITY (dB) VSWR POWER (:1) INPUT, W
L Max. 2.0 MU Max. 2.0
fL-fU
Nom.
Flatness ±1.3
Typ. 0.25
Max. 0.6
Typ. 17
Min. 10
Typ. 1.2
300-1100 20.5±1.0
PCB Land Pattern
1. Mainline loss includes theoretical power loss at coupled port.
Typical Performance Data
Frequency (MHz)
Suggested Layout, Tolerance to be within ±.002
Mainline Loss (dB) In-Out 0.30 0.26 0.26 0.28 0.30 0.32 0.34 0.35 0.37 0.39
LRDC-20-2J MAINLINE LOSS
Coupling (dB) In-Cpl 22.27 22.11 21.96 21.80 21.67 21.51 21.43 21.33 21.21 21.10
Directivity (dB) 18.46 17.25 16.06 15.20 14.83 14.54 14.42 14.34 14.26 14.24
In 15.52 18.41 20.51 22.14 22.93 23.56 23.84 23.91 23.80 23.78
Return Loss (dB) Out 15.46 18.43 20.53 22.18 23.08 23.66 24.00 24.09 24.04 24.01
Cpl 16.06 19.61 24.62 31.13 31.10 27.46 33.75 25.94 32.75 25.15
Outline Dimensions ( inch ) mm
A .390 9.91 H .420 10.67 B .31 7.87 J .120 3.05 C .225 5.72 K .060 1.52 D .060 1.52 L .100 2.54 E --M --F .100 2.54 G .045 1.14 wt grams 0.50
300.00 438.46 576.92 715.38 807.69 900.00 950.00 1000.00 1050.00 1100.00
1.0 MAINLINE LOSS (dB) 0.8 0.6 0.4 0.2
at RF level of -10 dBm
LRDC-20-2J COUPLING & DIRECTIVITY
40 COUPLING & DIRECTIVITY (dB) 30 20 10
at RF level of -10 dBm
DIRECTIVITY
COUPLING
Demo Board MCL P/N: TB-31 Suggested PCB Layout (PL-087)
0.0 300
460
620
780
940
1100
0 300
460
620
780
940
1100
FREQUENCY (MHz)
50 RETURN LOSS (dB) 40 30 20 10
at RF level of -10 dBm
LRDC-20-2J RETURN LOSS
IN OUT CPL
Electrical Schematic
FREQUENCY (MHz)
0 300
460
620
780
940
1100
FREQUENCY (MHz)
Mini-Circuits
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®
minicircuits.com
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 The Design Engineers Search Engine Provides ACTUAL Data Instantly From MINI-CIRCUITS At: www.minicircuits.com
REV. A M119986 LRDC-20-2J WZ/TD/CP/AM 081120
IF/RF MICROWAVE COMPONENTS
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