PARAMETER ADSL Line Interface Transformer UNITS TURNS RATIO (10-7) : (9-6) 1 : 1 +1% Tie7-9, (10-6) : (1-5) 2.2 : 1 +1% Inductance 1 3.0 +6% mH Leakage Inductance 2 10.0 Max. µH DCR Pins 10 -7 1.26 Max Ω DCR Pins 9 - 6 1.26 Max Ω DCR Pins 1 - 5 0.66 Max Ω -70 dB Longitudinal Balance at 20 kHz to 250 kHz 55 Min. dB Interwinding Capacitance 100 Max pF THD 3 Designed to meet supplementary insulation requirements of IEC950 for working voltage of 250 Vrms Schematic Diagram PRI SEC 10 1 7 9 Isolation 1 to 10, (tie 7-9) 2050 VAC 6 5 1. Tested @ 10 kHz and 1.0 VAC (Pins 10-6) With 7-9 shorted, and 100mADC. 2. Tested @ 100 kHz and 100 mVAC (Pins 10-6) With7-9, 1-5 shorted. 3. Tested @ 40kHz - 1.65VrmsVAC across Pri, 28 ohm load, 135 ohm input, tie (7-9) Operating temperature range -40oC to + 85oC Physical Dimensions inches (mm) .522 (13.26) MAX. .532 (13.51) MAX. .715 (18.15) 10 .516 (13.1) MAX. 9 1 Suggested Pad Layout .100 (2.54) .028 (0.70) .516 (13.1) 6 .675 (17.15) .663 (16.85) Rhombus P/N: Cust. P/N: Date: 9/13/99 Rhombus Industries Inc. Transformers & Magnetic Products www.rhombus-ind.com 3 4 7 .025 (0.64) 2 .100 (2.54) TYP. .050 (1.27) TYP. 5 .100 (2.54) TYP. T-1274G Name: Sheet: 1 of 1 15801 Chemical Lane, Huntington Beach, CA 92649-1595 Phone: (714) 898-0960 z FAX: (714) 896-0971