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| 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 25C 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 sales@alphaind.com * 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 sales@alphaind.com * 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 -40C to +85C -65C to +150C +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 sales@alphaind.com * www.alphaind.com Specifications subject to change without notice. 3/99A 3 |
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