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Directional Coupler
7520to1000MHz
Maximum Ratings
OperatingTemperature StorageTemperature -40Cto85C -55Cto100C
Surface Mount
ADC-18-4-75R+
Features
Pin Connections
INPUT OUTPUT COUPLED GROUND NOTUSED
1 6 3 2,5 4
* wideband,20-1000MHz * gooddirectivity,25dBtyp. * excellentVSWR,1.15:1typ. * internalload,noexternalcomponentsrequired * aqueouswashable * protectedbyUSPatent6,133,525&6,140,887 * CATVpowertap
CASESTYLE:CD542 PRICE:$7.95ea.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 Outline Drawing
FREQ. (MHz)
fL-fU 20-1000
COUPLING (dB)
L Nom. 17.70.5 Flatness 0.5
MAINLINE LOSS1 (dB)
M Typ. Max. 0.5 0.9 U Typ. Max. 0.7 1.2 L Typ. Min. 30 19 Typ. Max. 0.6 1.0
DIRECTIVITY (dB)
M Typ. Min. 25 18 U Typ. Min. 20 11
VSWR POWER (:1) INPUT, W
Typ. 1.15 Max. 1.0
L=20-200MHzM=200-500MHzU=500-1000MHz 1.Mainlinelossincludestheoreticalpowerlossatcoupledport.
Typical Performance Data
PCB Land Pattern
Frequency (MHz)
20.00 50.00 100.00 240.00 400.00 540.00 680.00 800.00 900.00 1000.00
Mainline Loss (dB) In-Out
0.64 0.58 0.55 0.56 0.60 0.65 0.71 0.76 0.80 0.86
ADC-18-4-75R+ MAINLINE LOSS
Coupling (dB) In-Cpl
17.79 17.73 17.70 17.71 17.67 17.63 17.55 17.47 17.40 17.33
Directivity (dB)
32.89 41.84 43.88 30.92 24.83 21.34 18.57 16.59 15.17 13.84
In
20.76 24.04 25.58 27.26 27.68 28.01 29.46 31.69 35.90 42.87
Return Loss (dB) Out
22.00 26.77 29.90 35.24 34.53 31.80 29.91 28.56 27.62 27.02
Cpl
20.42 23.55 24.90 27.17 28.00 27.82 25.76 23.12 21.50 20.11
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-18-4-75R+ COUPLING & DIRECTIVITY
COUPLING & DIRECTIVITY (dB) 45 37 29 21 13 0 200 400 600 FREQUENCY (MHz) 800 1000
at RF level of -4.3 dBm
0.9 MAINLINE LOSS (dB) 0.8 0.7 0.6 0.5
at RF level of -4.3 dBm
COUPLING
DIRECTIVITY
Demo Board MCL P/N: TB-356 Suggested PCB Layout (PL-213)
0
200
400
600
800
1000
FREQUENCY (MHz) ADC-18-4-75R+ RETURN LOSS
45 RETURN LOSS (dB) 40 35 30 25 20 0 200 400 600 FREQUENCY (MHz) 800 1000
at RF level of -4.3 dBm
Electrical Schematic
IN
OUT
CPL
Mini-Circuits
TM
(R)
minicircuits.com
REV.A M119986 ED-12361/1 ADC-18-4-75R+ DY/LC/CP/AM 081111
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
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