Surface Mount
Directional Coupler
D19G
50Ω
1420 to 1660 MHz
Maximum Ratings
Operating Temperature
Storage Temperature
Features
• low mainline loss, 0.3 dB typ.
• excellent VSWR, 1.2:1 typ.
• excellent repeatability
• miniature low profile package
• tape & reel package
-40°C to 85°C
-65°C to 150°C
CASE STYLE: CA531-1
PRICE: $ 0.99 ea. QTY (25)
Pin Connections
INPUT
• aqueous washable
4
Applications
OUTPUT
6
3
• GPS
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
1420-1660
18.8±1.4
0.3
0.5
15
10
1.2
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
1420.00
1440.00
1460.00
1500.00
1520.00
0.28
0.29
0.29
0.29
0.30
20.02
19.91
19.80
19.58
19.48
16.30
16.38
16.49
16.67
16.78
32.66
32.66
32.66
32.92
32.92
32.00
32.00
32.17
32.32
32.30
36.15
36.47
36.81
37.65
38.00
1540.00
1560.00
1600.00
1640.00
1660.00
0.30
0.30
0.31
0.31
0.32
19.38
19.28
19.08
18.88
18.79
16.87
16.97
17.17
17.39
17.51
32.87
32.87
32.79
32.45
32.22
32.26
32.33
32.38
32.09
31.87
38.31
38.76
39.93
40.96
41.50
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
D19G
MAINLINE LOSS
D19G
COUPLING & DIRECTIVITY
at RF level of -10 dBm
at RF level of -10 dBm
25
22
19
16
13
10
0.5
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
COUPLING
DIRECTIVITY
.018 grams
0.46 0.020
0.4
0.3
0.2
0.1
0.0
Demo Board MCL P/N: TB-396+
Suggested PCB Layout (PL-270)
1420
1468
1516
1564
1612
1660
1420
1468
1516
1564
1612
1660
FREQUENCY (MHz)
FREQUENCY (MHz)
D19G
RETURN LOSS
Electrical Schematic
at RF level of -10 dBm
45
43
41
39
37
35
33
31
29
27
25
IN
OUT
CPL
1420
1468
1516
1564
1612
1660
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)
®
minicircuits.com
Mini-Circuits
REV. D
M119986
D19G
JS/TD/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
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