Directional Coupler 0.81–0.96 GHz
DC08-73 Features
s Low Cost s Low Profile s Small SOT-6 Package s Tape & Reel
Description
The DC08-73 is a monolithic directional coupler tailored to the 0.81–0.96 GHz band. It offers low loss, good isolation, good input/output matching and exceptional coupling repeatability. It may be used at higher frequencies when stronger coupling is required. It is available in the SOT-6 leaded surface mount package.
Electrical Specifications at 25°C
Parameter Frequency Insertion Loss1 Isolation Input VSWR Output VSWR Coupling Coupled Port VSWR
1. Coupling loss included.
Min. 0.81
Typ. .35
Max. 0.96 .45 1.3:1 1.3:1 16 1.3:1
Unit GHz dB dB
21
22 1.05:1 1.05:1
14
15 1.2:1
dB
Pin Out
GND GND COUPLED OUT
Block Diagram
1 6
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email
[email protected] • www.alphaind.com
Specifications subject to change without notice. 3/99A
1
6
DC08
2 GND RF IN 3
5
2 3
5 4
4
1
Directional Coupler 0.81–0.96 GHz
DC08-73
Typical Performance Data
0.0 -0.5 1.5 1.4
Insertion Loss (dB)
Output VSWR Frequency (GHz)
-1.0 -1.5 -2.0 -2.5 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0
1.3 1.2 1.1 1.0 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0
Frequency (GHz)
Insertion Loss vs. Frequency
0.0
1.5
Output VSWR vs. Frequency
Coupled Port VSWR
0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0
Isolation (dB)
-10.0
1.4 1.3 1.2 1.1 1.0 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0
-20.0
-30.0
-40.0
Frequency (GHz)
Frequency (GHz)
Isolation vs. Frequency
1.5 1.4
Coupled Port VSWR vs. Frequency
-5.0 -10.0
Input VSWR
Coupling (dB)
0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0
1.3 1.2 1.1 1.0
-15.0 -20.0 -25.0 -30.0 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0
Frequency (GHz)
Frequency (GHz)
Input VSWR vs. Frequency
Coupling vs. Frequency
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email
[email protected] • www.alphaind.com
Specifications subject to change without notice. 3/99A
2
Directional Coupler 0.81–0.96 GHz
DC08-73
Absolute Maximum Ratings
Characteristic Input Power Operating Temperature Storage Temperature Electrostatic Discharge Value +4 W -40°C to +85°C -65°C to +150°C +125 V
SOT-6
0.074 (1.90 mm REF.) PIN 6 PIN 1 INDICATOR PIN 1 0.020 (0.51 mm) 0.014 (0.350 mm) 0.057 (1.45 mm) 0.035 (0.90 mm) 0.126 (3.20 mm) 0.087 (2.20 mm) 0.071 (1.80 mm) 0.052 (1.30 mm)
Note: Exceeding these parameters may cause irreversible damage.
0.037 (0.95 mm) REF. 0.012 (0.30 mm) TYP. 0.014 (0.26 mm) 0.004 (0.10 mm) 5.0˚ ± 1˚
Recommended Board Layout
0.018 TYP. 0.075 0.020
0.006 (0.15 mm) 0.000 (0.00 mm)
5.0˚ ± 1˚
0.122 (3.10 mm) 0.106 (2.70 mm)
0.022 (0.61 mm) 0.004 (0.10 mm)
0.015 0.0200 DIA. VIA 3 PLACES
0.039 TYP. Material is 10 mil FR4.
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email
[email protected] • www.alphaind.com
Specifications subject to change without notice. 3/99A
3
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