PARAMETER T-1193 UNITS Turns Ratio 1 : 2 +3% HDSL TRANSFORMER Line Impedance 135 Ω Inductance (Line Side) 3.0 +6% mH Longitudinal Balance 40 kHz to 200 kHz 53 min. dB Primary DC Resistance 3.6 Max. Ω Secondary DC Resistance 1.8 Max. Ω Frequency Response 40kHz - 300kHz +0.2 dB Designed for HDSL applications Insertion Loss @ 200kHz 0.4 Compatible with Brooktree BT8970 at 784 kbps Custom versions of this transformer are available. A Surface Mount version of this transformer is available dB Isolation (HI-POT) 1500 VRMS Primary DC 250 mA Return Loss @ 40kHz 16 min. dB Operating Temperature Range -40 to +85 0 SCHEMATIC DIAGRAM 5 2 C 7 6 .810 (20.6) 3 .810 (20.6) 8 .415 (10.54) Line Side Pins 5-7 + 6-8 Device Side Pins 2-3 .120 (3.05) MIN. .200 (5.08) TYP. Pin Diameter is 0.024 (0.6) .690 (17.5) Bottom View 1 2 3 4 Physical Dimensions in inches (mm) 8 7 6 5 2/15/99 Rhombus Industries Inc. Transformers & Magnetic Products 15801 Chemical Lane, Huntington Beach, CA 92649 Phone: (714) 898-0960 FAX: (714) 896-0971 www.rhombus-ind.com