T-1298 HDSL TRANSFORMER PARAMETER UNITS Turns Ratio 2 : 1 +1% Designed to meet UL1950 and EN60950 reinforced insulation for a working voltage of 150V and supplementary insulation for a working voltage of 300V. Inductance (Line Side) 1 2.0 +6% mH Leakage Inductance 1 11.0 Max µH Designed for HDSL applications Longitudinal Balance 40 kHz to 300 kHz 50 min. dB Primary DC Resistance 2.5 Max. Ω Compatible with Brooktree BT8921 & BT8970 at 1168kbs. Secondary DC Resistance 1.0 Max. Ω Frequency Response 33kHz - 110kHz +0.1 dB Insertion Loss @ 40kHz Rs=135Ω RL=32Ω 0.5 Max. Custom versions of this transformer are available. A Surface Mount version of this transformer is available dB Isolation (HI-POT) 2050 VRMS Primary DC 160 mA Return Loss @ 40kHz - 300kHz 16.5 min. dB THD (20 KHz, 4.5Vp-p) 70 Min. dB SCHEMATIC DIAGRAM: 1 PRI. 9 4 SEC. 2 Tested at 10 kHz - 0.1VAC 7 5 Line Side Pins 1-4 + 2-5 Device Side Pins 9-7 PIN POSITION GRID 0.100 (2.54) HOLES FOR BOBBIN PINS 10 9 8 7 6 Physical Dimensions in inches (mm) 1 2 3 4 5 Rhombus Industries Inc. Transformers & Magnetic Products 4/5/99 15801 Chemical Lane, Huntington Beach, CA 92649 Phone: (714) 898-0960 FAX: (714) 896-0971 www.rhombus-ind.com