ADSL U-Interface Transformer Turns Ratio ( + 3 % ) 1:1:1:1 Schematic Diagram PARAMETER MIN. MAX. UNITS Primary Inductance1 (Chip Side) Pins 1-5 with 2 & 4 shorted. 396 484 µH 10 1 15 µH 7 Line Side 9 4 Chip Side 2 Primary DC Resistance Pins 1-2 or 4-5 0.16 ohms 6 5 Secondary DC Resistance Pins 6-9, or 7-10 1.20 ohms Leakage Inductance 2 Pins 1-5 with 2 & 4 shorted. Secondary Shorted Isolation (Hi-Pot) 2500 VRMS 1. Tested @ 10kHz & 100 mVRMS 2. Tested @ 100kHz & 100 mVRMS Physical Dimensions Notch Indicates Pin #1 inches (mm) RHOMBUS P/N: T-1281 CUST P/N: DATE: 09/18/99 Rhombus Industries Inc. Transformers & Magnetic Products NAME: SHEET: 1 of 1 15801 Chemical Lane, Huntington Beach, CA 92649 Phone: (714) 898-0960 FAX: (714) 896-0971 www.rhombus-ind.com