Surface Mount
NEW!
Directional Couplers
DBTC-17-5 DBTC-17-5L
50Ω
50 to 2000 MHz
Maximum Ratings
Features
OperatingTemperature
-40°C to 85°C
-55°C to 100°C
• very flat coupling
• very broadband, multi octave
• temperature stable, BLUE CELL™ base
• all welded construction
StorageTemperature
No Leads
Leads
CASE STYLE:AT790-1
PRICE: $1.99 ea. QTY (25)
$1.69 ea. QTY (1000)
CASE STYLE:AT1030
PRICE: $2.14 ea. QTY (25)
$1.84 ea. QTY (1000)
• leads attached for better solderability
• micro-miniaturecoupler
• protected by U.S. Patent 6,140,887 & 6,784,521
Pin Connections
INPUT
3
4
OUTPUT
COUPLED
1
Applications
GROUND
2
• cellular
• PCS
• DECT/PHS
• GSM
NOT USED*
*pins 5&6 must be isolated
5,6
Directional Coupler Electrical Specifications
Outline Drawing
AT790-1
FREQ.
RANGE
(MHz)
COUPLING
(dB)
MAINLINE LOSS*
(dB)
DIRECTIVITY
(dB)
VSWR** POWER
(:1)
INPUT, W
Max.
L
M
U
L
M
U
L
MU
fL-fU
Nom.
17.0±0.7
Flatness
Typ. Max. Typ. Max. Typ. Max. Typ. Min. Typ. Min. Typ. Min.
Typ.
Max. Max.
50-1000
1000-1500 17.7±0.9
1500-2000 18.0±1.0
±0.9
±1.0
±0.8
0.9 1.4
1.0 1.5
1.1 1.6
20 13
20 10
1.20
1.20
1.20
—
—
—
2.0
2.0
2.0
14
—
AT1030
*
Includes theoretical coupled power loss of 0.07 dB at 17 dB coupling.
L = low range [fL to 10 fL] M = mid range [10 fL to fU/2]
U = upper range [fU/2 to fU]
**For coupled port VSWR above 500 MHz, 1.6:1 typ.
Typical Performance Data
Frequency
(MHz)
InsertionLoss
(dB)
Coupling
(dB)
In-Cpl
Directivity
(dB)
Return Loss
(dB)
Out
In-Out
In
Cpl
50.00
100.00
500.00
0.64
0.66
0.76
0.85
0.91
0.99
1.05
1.08
1.18
1.21
16.41
16.42
16.74
17.06
17.30
17.63
17.81
17.88
18.07
18.11
15.92
16.17
18.53
22.42
22.32
17.74
15.41
14.43
12.20
11.55
23.43
23.56
22.36
21.45
21.67
22.81
24.84
25.91
28.04
28.07
27.62
27.75
23.13
21.80
21.94
22.71
24.12
24.48
25.71
25.97
18.46
18.62
18.78
18.22
17.08
14.85
13.40
12.71
10.95
10.50
800.00
AT790-1 & AT1030
1000.00
1300.00
1500.00
1600.00
1900.00
2000.00
inch
Outline Dimensions (
)
J
mm
AT790-1
A
B
C
D
E
F
G
H
K
wt.
grams
.10
BLUE CELL™ is protected by U.S. Patents.
.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
DBTC-17-5L
DBTC-17-5L
COUPLING & DIRECTIVITY
INSERTION LOSS
at RF level of -10 dBm
AT1030
A
B
C
D
E
F
G
H
J
K
L
wt.
25
20
15
10
5
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
.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
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
Demo Board MCL P/N: TB-278
Suggested PCB Layout (PL-150)
COUPLING
DIRECTIVITY
0
0
200 400 600 800 1000 1200 1400 1600 1800 2000
FREQUENCY (MHz)
0
200
400
600
800 1000 1200 1400 1600 1800 2000
FREQUENCY (MHz)
DBTC-17-5L
RETURN LOSS
at RF level of -10 dBm
30
25
20
15
10
5
IN
OUT
COUPLING
0
0
200
400
600
800 1000 1200 1400 1600 1800 2000
FREQUENCY (MHz)
REV. F
M89619
DBTC-17-5 ED-8784A/1
DBTC-17-5L ED-8785B/1
WZ/TD/CP
040225
®
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