Surface Mount
Directional Coupler
D20C
50Ω
810 to 960 MHz
Maximum Ratings
Operating Temperature
Storage Temperature
Features
• low mainline loss, 0.3 dB typ.
• excellent VSWR, 1.1:1 typ.
• excellent repeatability
• miniature low profile package
• aqueous washable
-40°C to 85°C
-65°C to 150°C
CASE STYLE: CA531-1
PRICE: $ 0.99 ea. QTY (25)
Pin Connections
INPUT
4
Applications
• cellular
• PCS
OUTPUT
6
3
COUPLED
GROUND
1,2,5
Directional Coupler Electrical Specifications
FREQ.
RANGE
(MHz)
COUPLING
(dB)
MAINLINE LOSS1
DIRECTIVITY
(dB)
VSWR POWER
(dB)
(:1)
INPUT2
Outline Drawing
Typ. Max.
Typ. Min.
Typ.
Max.
PCB Land Pattern
810-960
19.4±1.4
0.3
0.5
15
7
1.1
1.0
1. Mainline loss includes theoretical power loss at coupled port.
2. 4W CW when operating with a 2.0:1 maximum VSWR on all ports.
Typical Performance Data
Frequency
(MHz)
Mainline Loss
(dB)
Coupling
(dB)
In-Cpl
Directivity
(dB)
Return Loss
(dB)
Suggested Layout,
Tolerance to be within ±.002
In-Out
In
Out
Cpl
810.00
815.00
825.00
855.00
875.00
0.32
0.32
0.33
0.34
0.34
20.15
20.10
20.00
19.71
19.51
15.42
15.43
15.44
15.49
15.51
29.31
29.27
29.17
28.87
28.80
32.09
32.02
31.91
31.70
31.59
32.06
31.93
31.69
31.05
30.69
895.00
915.00
935.00
955.00
960.00
0.35
0.35
0.35
0.36
0.36
19.33
19.15
18.97
18.80
18.76
15.50
15.48
15.48
15.49
15.50
28.80
28.68
28.51
28.41
28.37
31.44
31.15
30.84
30.60
30.54
30.26
29.79
29.34
29.00
28.92
Outline Dimensions ( inch
)
mm
A
.052
1.32
B
.067
1.70
C
.106
2.69
D
.122
3.10
E
.035
0.89
F
.064
1.63
G
.087
2.21
H
.118
3.00
J
.067
1.70
D20C
MAINLINE LOSS
D20C
COUPLING & DIRECTIVITY
at RF level of -10 dBm
at RF level of -10 dBm
0.5
25
22
19
16
13
10
COUPLING
DIRECTIVITY
K
.083
2.11
L
.033
0.84
M
.042
1.07
N
.012
0.30
P
.020
0.51
Q
.012
0.30
R
.006
0.15
S
wt
0.4
0.3
0.2
0.1
0.0
.018 grams
0.46 0.020
Demo Board MCL P/N: TB-396+
Suggested PCB Layout (PL-270)
810
840
870
900
930
960
810
840
870
900
930
960
FREQUENCY (MHz)
FREQUENCY (MHz)
D20C
RETURN LOSS
Electrical Schematic
at RF level of -10 dBm
35
33
31
29
27
25
IN
OUT
CPL
810
840
870
900
930
960
FREQUENCY (MHz)
ESD Rating
Human Body Model (HBM): Class 1A (250 v to <500 v) in accordance with ANSI/ESD STM 5.1 - 2001
Machine Model (MM): Class M1 (< 100 v) in accordance with ANSI/ESD STM 5.2 - 1999 (pass 50V)
®
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Mini-Circuits
REV. C
M119986
D20C
JS/TD/CP/AM
081111
ISO 9001 ISO 14001 AS 9100 CERTIFIED
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IF/RF MICROWAVE COMPONENTS