Surface Mount
Directional Couplers
75Ω,
9dB Coupling,
Maximum Ratings
Operating Temperature
Storage Temperature
-40°C to 85°C
-55°C to 100°C
DBTC-9-4-75+ DBTC-9-4-75L+
5 to 1200 MHz
Features
•
•
•
•
•
•
•
•
very flat coupling
very broadband, multi octave
temperature stable, LTCC base
all welded construction
leads attached for better solderability
micro miniature coupler
aqueous washable
protected by US Patents 6,140,887 & 6,784,521
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)
Pin Connections
INPUT
OUTPUT
COUPLED
GROUND
ISOLATE (DO NOT USE)
3
4
1
2
6
+ RoHS compliant in accordance
with EU Directive (2002/95/EC)
The +Suffix has been added in order to identify RoHS
Compliance. See our web site for RoHS Compliance
methodologies and qualifications.
Applications
• CATV
• wire-line broadband access
Outline Drawing / Dimensions (
inch
)
mm
AT790-1 (DBTC-9-4-75)
PCB Land Pattern
Electrical Specifications
MAINLINE LOSS
(dB)
DIRECTIVITY
(dB)
VSWR
(:1)
POWER
INPUT
(W)
Max.
0.5
0.5
0.5
0.5
FREQ.
(MHz)
COUPLING
(dB)
Max.
Flatness
±0.7
Suggested Layout,
Tolerance to be within
±.002
5-1200
5-50
50-500
500-1000
1000-1200
Nom.
9.3±0.5
Typ.
1.3
1.4
1.5
1.8
Max.
1.8
1.9
2.1
2.4
Typ.
20
19
18
17
Min.
16
16
15
12
Typ.
1.3
1.4
1.6
1.8
A
.150
3.81
B
.150
3.81
C
.150
3.81
D
.050
1.27
E
.030
0.76
F
.025
0.64
G
.028
0.71
H
.050
1.27
J
.160
4.06
K
wt
.030 grams
0.76
0.10
Typical Performance Data
Frequency
(MHz)
5.00
50.00
180.00
340.00
500.00
700.00
850.00
1000.00
1100.00
1200.00
Mainline Loss
(dB)
In-Out
1.30
1.25
1.35
1.47
1.59
1.71
1.79
1.85
1.94
2.05
DBTC-9-4-75L+
MAINLINE LOSS
COUPLING & DIRECTIVITY
(dB)
AT1030 (DBTC-9-4-75L)
PCB Land Pattern
Coupling
(dB)
In-Cpl
8.95
8.94
9.04
9.17
9.31
9.43
9.50
9.50
9.53
9.55
Directivity
(dB)
20.16
20.52
19.88
18.93
18.17
17.66
17.84
18.18
18.33
18.17
In
17.86
18.77
18.21
14.37
12.71
11.29
10.98
11.17
10.61
10.64
Return Loss
(dB)
Out
27.44
37.27
24.64
19.25
15.89
13.70
12.74
12.00
11.44
10.96
Cpl
17.79
18.31
15.38
11.87
9.41
7.55
6.68
6.13
5.87
5.66
Suggested Layout,
Tolerance to be within
±.002
DBTC-9-4-75L+
COUPLING & DIRECTIVITY
25
20
15
10
5
0
200
400
600
800
FREQUENCY (MHz)
1000
1200
at RF level of 0 dBm
MAINLINE LOSS (dB)
A
.166
4.22
B
.150
3.81
C
.155
3.94
D
.050
1.27
E
.037
0.94
F
.025
0.64
G
.012
0.30
H
.060
1.52
J
.184
4.67
K
.030
0.76
L
wt
.004 grams
0.10
0.10
3.0
2.5
2.0
1.5
1.0
0.5
0
at RF level of 0 dBm
COUPLING
DIRECTIVITY
Demo Board MCL P/N: TB-279
Suggested PCB Layout (PL-151)
200
400
600
800
1000
1200
FREQUENCY (MHz)
DBTC-9-4-75L+
RETURN LOSS
40
RETURN LOSS (dB)
35
30
25
20
15
10
5
0
200
400
600
800
FREQUENCY (MHz)
1000
1200
at RF level of 0 dBm
electrical schematic
IN
OUT
CPL
REV. A
M111888
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
ED-12342A/1
DBTC-9-4-75
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