PARAMETER T-982G UNITS Turns Ratio 2 : 1 +1% Line Impedance 135 Ω Inductance (Line Side) 3.0 +6% mH Longitudinal Balance 40 kHz to 200 kHz 53 min. dB Primary DC Resistance 2.5 Max. Ω Secondary DC Resistance 1.0 Max. Ω Frequency Response 40kHz - 300kHz +0.2 dB HDSL TRANSFORMER Designed for HDSL applications Insertion Loss @ 200kHz 0.4 Isolation (HI-POT) Compatible with Brooktree BT8921 & BT8970 at 784 kbps Custom versions of this transformer are available. dB 1500 SCHEMATIC DIAGRAM: VRMS Primary DC 160 mA Return Loss @ 40kHz 20 min. dB THD (40 KHz, 14 dBm) -70 Min. dB 1 9 4 2 7 5 Line Side Pins 1-4 + 2-5 Device Side Pins 9-7 Physical Dimensions in inches (mm) .522 (13.26) MAX. .532 (13.51) MAX. .516 (13.1) MAX. .715 (18.15) 10 9 .100 (2.54) .028 (0.70) .025 (0.64) .516 (13.1) 8 1 Suggested Pad Layout 6 3 4 7 .675 (17.15) .663 (16.85) 2 .100 (2.54) TYP. .100 (2.54) TYP. .050 (1.27) TYP. 5 1/22/96 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