Document 202-1 HDSL2 Transformers This product is not RoHS-compliant. Contact Coilcraft for current status or possible alternatives. This family of transformers provides optimum performance with the Level One SK70740/-41/-42 and other HDSL2 transceiver chip sets. The series now includes parts with a 1 CT to 2.3 CTS turns ratio, allowing them to work with line drivers for lower power supply voltages. They’re engineered for minimum DC resistance and very low leakage inductance. Primary inductance with and without DC bias is stable from -40°C to +85°C. The return loss, longitudinal balance and THD are optimized for the best overall performance at the HDSL2 transmission speed. For free evaluation samples or to discuss custom designs, please contact Coilcraft. Style Data rate (kb/s) Turns ratio chip:line Primary inductance ±15% (mH) Leakage inductance max (µH) H28161-A H28159-A H28160-A H27649-B H27650-A Leaded Leaded SMT Leaded Leaded 1500 1500 1500 1500 1500 1 CT:2.3 CTS 1 CT:2.3 CTS 1 CT:2.3 CTS 1 CT:2 CTS 1 CT:2 CTS 2.0 2.0 2.0 2.0 2.0 25 30 30 25 25 90 55 55 90 55 H27695-A H28223-B H28224-B SMT Leaded SMT 1500 1500 1500 1 CT:2 CTS 1 CT:2.3 CTS 1 CT:2.3 CTS 2.0 2.0 2.0 25 30 30 55 65 65 Part number DC bias capacity (mA) Dielectric strength (V) H28161-A H28159-A H28160-A H27649-B H27650-A 100 100 100 100 100 2300 3000 3000 2300 3000 13 13 13 14 14 H27695-A H28223-B H28224-B 100 100 100 3000 3000 2300 14 @ 40 kHz 13 @ 40 kHz 13 @ 40 kHz Part number Return loss min (dB) min (dB) @ @ @ @ @ 40 40 40 40 40 kHz kHz kHz kHz kHz 13 12 12 15 13 @ @ @ @ @ 320 320 320 320 320 kHz kHz kHz kHz kHz 13 @ 320 kHz 13 @ 320 kHz 13 @ 320 kHz DCR max (Ohms) Capacitance max (pF) Chip side Line side 1.5 2.0 2.0 1.5 2.0 (9-7) (8-6) (8-6) (9-7) (8-6) 1.5 2.0 2.0 1.5 2.0 1.5 2.0 2.0 1.5 2.0 (2-5) (3-4) (3-4) (2-5) (3-4) 2.0 (8-6) 2.0 (1-2), 2.0 (3-4) 1.85 (10-7) 2.1 (1-4), 2.1 (2-5) 1.85 (10-7) 2.1 (1-4), 2.1 (2-5) Longitudinal balance typ (dB) 65 65 65 65 65 (1-4), (1-2), (1-2), (1-4), (1-2), @ @ @ @ @ 40 40 40 40 40 kHz kHz kHz kHz kHz 65 @ 40 kHz 65 @ 40 kHz 65 @ 40 kHz THD typ (dB) -85 -85 -85 -85 -85 @ @ @ @ @ 20 20 20 20 20 kHz kHz kHz kHz kHz -85 @ 20 kHz -85 @ 20 kHz -85 @ 20 kHz 1. All electrical specifications referenced to line side. 2. Operating temperature range -40°C to +85°C. 3. Electrical specifications at 25°C. Specifications subject to change without notice. Please check our website for latest information. © Coilcraft, Inc. 2007 Document 202-1 Revised 02/11/08 Document 202-2 HDSL2 Transformers H27650-A, H28159-A H27695-A, H28160-A Dot above pin 1 4 C Dot above pin 1 5 C A A B D E 1 8 B E E 5 4 F F F G 8 1 H G Recommended Board Layout Recommended Land Pattern Packaged 100 per tray Packaged 60 per tray A max B max C max D min 0.650 0.675 0.35 16,51 17,15 8,9 E F typ G dia H dia 0.125 0.541 0.148 0.020 0.030 inches 3,19 13,74 3,76 0,51 0,76 mm H28223-B A max B max C max E 0.675 0.925 0.35 0.591 0.148 0.079 × 0.110 inches F typ G typ 17,14 23,50 8,9 15,01 3,76 2,01 × 2,79 mm H28224-B B Dot above pin1 10 1 C C A D 6 5 B E E E 6 5 6 5 F A G G H 10 1 1 Recommended Board Layout Packaged 50 per tray 10 Recommended Land Pattern Packaged 100 per tray A max B max C max D min E F typ G dia H dia A max B max C max E 0.550 0.550 0.500 0.100 0.400 0.100 0.013 0.032 inches 0.530 0.699 0.500 0.590 3,97 13,97 12,70 3,0 10,16 2,54 0,33 0,82 mm 13,46 17,75 12,70 14,99 H27649-B, H28161-A H27650-A, H28159-A, H27695-A, H28160-A Dot on pin 1 1 F 9 Line side 1 A Chip side 8 F typ 1 G typ 0.098 0.050 × 0.061 inches 2,50 1,27 × 1,55 mm H28223-B, H28224-B Line side 1 Chip side 10 7 5 G 2 3 7 4 2 9 4 6 5 7 E B F C H27649-B, H28161-A H D Recommended Board Layout Line side 1 Chip side 9 Packaged 49per tray A max B max C max D min E F typ 0.930 1.05 0.46 0.12 0.800 0.150 23,62 26,7 11,7 3,0 20,32 3,81 G typ H typ 0.017 × 0.038 0.045 × 0.025 0,43 × 0,97 1,14 × 0,64 8 5 7 inches mm Specifications subject to change without notice. Please check our website for latest information. © Coilcraft, Inc. 2007 4 2 Document 202-2 Revised 02/11/08