
Typical Performance Data
Directional Coupler Electrical Specifications
Maximum Ratings
Operating Temperature
Storage Temperature
Pin Connections
INPUT
OUTPUT
COUPLED
GROUND
NOT USED*
*pins 5&6 must be isolated
Features
very flat coupling
very broadband, multi octave
temperature stable, BLUE CELL base
all welded construction
loads attached for better solderability
micro-miniature coupler
protected by U.S. Patent 6,140,887 & 6,784,521
VHF/UHF receivers/transmitters
cellular
3
4
1
2
5,6
Applications
-40°C to 85°C
-55°C to 100°C
FREQ.
RANGE
(MHz)
COUPLING
(dB)
f
L
-f
U
5-1000
9.0±0.5
±0.5
1.2
2.0
1.2
1.8
1.5 2.0
21
17
18
13
15
—
1.20
0.5
1.0
VSWR**
(:1)
Nom.
Max.
Flatness
POWER
INPUT, W
L
Max.
MU
Max.
MAINLINE LOSS*
(dB)
L
Typ. Max.
M
Typ. Max.
U
Typ. Max.
DIRECTIVITY
(dB)
L
Typ. Min.
M
Typ. Min.
U
Typ. Min.
Typ.
* Includes theoretical coupled power loss of 0.58 dB at 9 dB coupling.
**For coupled port VSWR above 500 MHz, 1.6:1 typ.
Frequency
(MHz)
Insertion Loss
(dB)
In-Out
1.18
1.10
1.07
1.09
1.16
1.20
1.23
1.31
1.37
1.43
Coupling
(dB)
In-Cpl
8.93
8.89
8.87
8.90
8.93
8.90
8.88
8.86
8.85
8.86
Directivity
(dB)
Return Loss
(dB)
Out
24.67
29.04
32.70
31.81
30.43
30.62
30.39
30.31
29.26
27.16
In
Cpl
18.40
19.50
20.22
20.27
18.93
16.66
15.36
12.91
11.86
10.86
Outline Drawing
AT790-1
L = low range [f
L
to 10 f
L
] M = mid range [10 f
L
to f
U
/2] U = upper range [f
U
/2 to f
U
]
No Leads
CASE STYLE:AT790-1
PRICE:$1.99 ea. QTY (25)
$1.69 ea. QTY (1000)
Leads
CASE STYLE:AT1030
PRICE:$2.14 ea. QTY (25)
$1.84 ea. QTY (1000)
DBTC-9-4
NEW!
DBTC-9-4L
REV. F
ED-8958/1
AT1030
A
B
C
D
E
F
G
H
J
K
L
wt.
.166 .150 .155 .050 .037 .025 .012 .060 .184 .030 .004 grams
4.22 3.81 3.94 1.27 0.94 0.64 0.30 1.52 4.67 0.76 0.10
.10
AT790-1
A
B
C
D
E
F
G
H
J
K
wt.
.150 .150 .150 .050 .030 .025 .028 .050 .160 .030
3.81 3.81 3.81 1.27 0.76 0.64 0.71 1.27 4.06 0.76
grams
.10
Outline Dimensions ( )
inch
mm
Demo Board MCL P/N: TB-278
Suggested PCB Layout (PL-150)
Reflow Solder Assembly
Silver-bearing solder (Sn/Pb/Ag 62/36/2%) is recommended;
however, tin-lead eutectic (Sn/Pb 63/37%) may be used.
For temperature profiles, see Application Note AN-40-004
AT1030
AT790-1 & AT1030
DBTC-9-4L
RETURN LOSS
0
5
10
15
20
25
30
35
0
200
400
600
800
1000
FREQUENCY (MHz)
R
IN
OUT
CPL
DBTC-9-4L
INSERTION LOSS
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
0
200
400
600
800
1000
FREQUENCY (MHz)
I
at RF level of -10 dBm
DBTC-9-4L
COUPLING & DIRECTIVITY
0
5
10
15
20
25
0
200
400
600
800
1000
FREQUENCY (MHz)
C
(
COUPLING
DIRECTIVITY
50
5 to 1000 MHz
Directional Couplers
Surface Mount
INTERNET
http://www.minicircuits.com
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Distribution Centers
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Mini-Circuits
ISO 9001 & ISO 14001
Certified
Mini-Circuits
5.00
10.00
50.00
100.00
300.00
500.00
600.00
800.00
900.00
1000.00
21.62
21.70
21.50
20.99
19.47
17.60
16.50
14.74
14.07
13.44
17.90
19.15
20.07
20.12
20.49
21.02
20.89
20.45
20.06
19.34