PARAMETER T-1316 UNITS Turns Ratio1 HDSL2 TRANSFORMER 1 : 2 +3% Inductance2 1.75 +8% mH Longitudinal Balance 20 kHz to 600 kHz 50 min. dB Primary DCR (Pins 7-9) 0.6 Max. Ω Secondary DCR (Pins 5-2 or 4-1) 0.6 Max. Ω Frequency Response 40kHz - 300kHz +0.2 dB Insertion Loss @ 100kHz 0.3 dB Isolation (HI-POT) 3000 VRMS Primary DC 160 mA Return Loss @ 100kHz 16.5 min. dB THD (10 KHz, 4.95VRMS) -75 Min. dB Designed for HDSL2 applications Compatible with Level One SK70740/41/42 Low Profile "Touch Tone" design A Surface Mount version of this transformer is available SCHEMATIC DIAGRAM 8 2 9 1 Line Side Pins 7 - 9 Chip Side Pins 5 - 2, 4 - 1 Operating Temp. Range -400C to +850C Primary is Line Side Secondary is Chip Side Surge Voltage Capability: Longitudinal Voltage: 2400 V peak, 10/560 µS 5 4 1. Short pins 2 & 4 2. Line Side, Pins (7 - 9) @ 10KHz and 100 mV Metallic Voltage: 800 V peak, 10/700 µS 7 Physical Dimensions in inches (mm) POSITION GRID (P.C. PATTERN, COMPONENT SIDE) .800 (20.32) .150 (3.81) TYP. .060 DIA. (1.52) TYP. Notch on bobbin indicates pin #1 4/22/99 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