Surface Mount
LRDC-20-2+
LRDC-20-2
Directional Coupler
50Ω
300 to 1100 MHz
Maximum Ratings
Features
Operating Temperature -40°C to 85 °C
Storage Temperature -55°C to 100°C
• low mainline loss, 0.25 dB typ.
• high directivity, 17 dB typ.
Permanent damage may occur if any of these limits are exceeded.
Pin Connections
CASE STYLE: QQQ130
Applications
+RoHS Compliant
• VHF/UHF
• cellular
• communications
• signal sampling
INPUT6
OUTPUT1
COUPLED4
The +Suffix identifies RoHS Compliance. See our web site
for RoHS Compliance methodologies and qualifications
GROUND2,5
ISOLATE (DO NOT USE)
3
Directional Coupler Electrical Specifications
Outline Drawing
FREQ.
(MHz)
fL-fU
COUPLING
(dB)
Nom.
300-1100 20.5±1.0
MAINLINE LOSS1
(dB)
DIRECTIVITY
(dB)
VSWR POWER
(:1) INPUT, W
Flatness
Typ.
Max.
Typ.
Min.
Typ.
L
Max.
MU
Max.
±1.3
0.25
0.6
17
10
1.2
2.0
2.0
1. Mainline loss includes theoretical power loss at coupled port.
PCB Land Pattern
Typical Performance Data
Frequency
(MHz)
Outline Dimensions ( inch
mm )
A
.400
10.16
B
.31
7.87
C
.200
5.08
D
.10
2.54
E
.010
0.25
H
.420
10.67
J
.120
3.05
K
.060
1.52
L
.100
2.54
M
.020
0.51
F
.100
2.54
G
.050
1.27
wt
grams
0.55
300.00
438.46
576.92
715.38
807.69
900.00
950.00
1000.00
1050.00
1100.00
Demo Board MCL P/N: TB-31
Suggested PCB Layout (PL-087)
MAINLINE LOSS (dB)
1.0
Coupling
(dB)
In-Cpl
0.30
0.26
0.26
0.28
0.30
0.32
0.34
0.35
0.37
0.39
at RF level of -10 dBm
22.27
22.11
21.96
21.80
21.67
21.51
21.43
21.33
21.21
21.10
40
0.4
0.2
460
620
780
940
1100
FREQUENCY (MHz)
RETURN LOSS (dB)
IN
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
at RF level of -10 dBm
DIRECTIVITY
COUPLING
30
20
10
0
300
460
620
780
940
1100
FREQUENCY (MHz)
Electrical Schematic
LRDC-20-2
RETURN LOSS
at RF level of -10 dBm
15.52
18.41
20.51
22.14
22.93
23.56
23.84
23.91
23.80
23.78
LRDC-20-2
COUPLING & DIRECTIVITY
0.6
0.0
300
Return Loss
(dB)
Out
In
18.46
17.25
16.06
15.20
14.83
14.54
14.42
14.34
14.26
14.24
LRDC-20-2
MAINLINE LOSS
0.8
50
Directivity
(dB)
COUPLING &
DIRECTIVITY (dB)
Suggested Layout,
Tolerance to be within ±.002
Mainline Loss
(dB)
In-Out
CPL
40
30
20
10
0
300
460
620
780
940
1100
FREQUENCY (MHz)
Notes
A. Performance and quality attributes and conditions not expressly stated in this specification document are intended to be excluded and do not form a part of this specification document.
B. Electrical specifications and performance data contained in this specification document are based on Mini-Circuit’s applicable established test performance criteria and measurement instructions.
C. The parts covered by this specification document are subject to Mini-Circuits standard limited warranty and terms and conditions (collectively, “Standard Terms”); Purchasers of this part are entitled
to the rights and benefits contained therein. For a full statement of the Standard Terms and the exclusive rights and remedies thereunder, please visit Mini-Circuits’ website at www.minicircuits.com/MCLStore/terms.jsp
Mini-Circuits
®
www.minicircuits.com P.O. Box 350166, Brooklyn, NY 11235-0003 (718) 934-4500 [email protected]
REV. D
M151107
LRDC-20-2
WZ/TD/CP/AM
150819