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| 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 -40C to +85C. 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. Part number H28161-A H28159-A H28160-A H27649-B H27650-A H27695-A H28223-B H28224-B Style Leaded Leaded SMT Leaded Leaded SMT Leaded SMT DC bias capacity (mA) 100 100 100 100 100 100 100 100 Data rate (kb/s) 1500 1500 1500 1500 1500 1500 1500 1500 Turns ratio chip:line 1 CT:2.3 CTS 1 CT:2.3 CTS 1 CT:2.3 CTS 1 CT:2 CTS 1 CT:2 CTS 1 CT:2 CTS 1 CT:2.3 CTS 1 CT:2.3 CTS Primary inductance 15% (mH) 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 Leakage inductance max (H) 25 30 30 25 25 25 30 30 DCR max (Ohms) Capacitance max (pF) Chip side Line side 90 55 55 90 55 55 65 65 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 (1-4), (1-2), (1-2), (1-4), (1-2), 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) Part number H28161-A H28159-A H28160-A H27649-B H27650-A H27695-A H28223-B H28224-B Dielectric strength (V) 2300 3000 3000 2300 3000 3000 3000 2300 Return loss min (dB) min (dB) 13 13 13 14 14 @ @ @ @ @ 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 Longitudinal balance typ (dB) 65 65 65 65 65 @ @ @ @ @ 40 40 40 40 40 kHz kHz kHz kHz kHz THD typ (dB) -85 -85 -85 -85 -85 @ @ @ @ @ 20 20 20 20 20 kHz kHz kHz kHz kHz 14 @ 40 kHz 13 @ 40 kHz 13 @ 40 kHz 13 @ 320 kHz 13 @ 320 kHz 13 @ 320 kHz 65 @ 40 kHz 65 @ 40 kHz 65 @ 40 kHz -85 @ 20 kHz -85 @ 20 kHz -85 @ 20 kHz 1. All electrical specifications referenced to line side. 2. Operating temperature range -40C to +85C. 3. Electrical specifications at 25C. Specifications subject to change without notice. Please check our website for latest information. Document 202-1 Revised 02/11/08 (c) Coilcraft, Inc. 2007 Document 202-2 HDSL2 Transformers H27650-A, H28159-A C A Dot above pin 1 H27695-A, H28160-A 4 5 Dot above pin 1 C A E 4 5 D B E 1 8 B E F 1 8 F G H Recommended Board Layout Recommended Land Pattern F G Packaged 100 per tray A max B max C max D min 0.650 16,51 0.675 17,15 0.35 8,9 3,19 E 13,74 F typ 3,76 G dia H dia 0,51 0,76 mm A max 0.675 17,14 B max 0.925 23,50 C max 0.35 8,9 E 0.591 15,01 Packaged 60 per tray F typ 3,76 G typ 2,01 x 2,79 mm 0.125 0.541 0.148 0.020 0.030 inches 0.148 0.079 x 0.110 inches H28223-B B 1 10 H28224-B Dot above pin1 C C A D 5 6 E 5 6 B E 5 6 E A F 1 10 1 G 1 10 H Recommended Board Layout Recommended Land Pattern G Packaged 50 per tray A max B max 0.550 3,97 0.550 13,97 C max 0.500 12,70 D min 0.100 3,0 E 0.400 10,16 Packaged 100 per tray A max 0.530 13,46 B max 0.699 17,75 C max 0.500 12,70 E 0.590 14,99 F typ 2,50 F typ 0.100 2,54 G dia 0.013 0,33 H dia 0.032 inches 0,82 mm G typ 1,27 x 1,55 mm 0.098 0.050 x 0.061 inches H27649-B, H28161-A Dot on pin 1 1 9 H27650-A, H28159-A, H27695-A, H28160-A F Line side 1 Chip side 8 H28223-B, H28224-B Line side 1 Chip side 10 A 7 5 G E B F C H D Recommended Board Layout 2 3 7 4 2 9 4 6 5 7 H27649-B, H28161-A Line side 1 Chip side 9 Packaged 49per tray A max B max C max 0.930 23,62 1.05 26,7 0.46 11,7 D min 0.12 3,0 E 0.800 20,32 F typ 0.150 3,81 G typ 0,43 x 0,97 H typ inches mm 5 7 4 2 8 0.017 x 0.038 0.045 x 0.025 1,14 x 0,64 Specifications subject to change without notice. Please check our website for latest information. Document 202-2 Revised 02/11/08 (c) Coilcraft, Inc. 2007 |
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