Document 255 ADSL Interface Transformers For Virata Beryllium chipset This product is not RoHS-compliant. Contact Coilcraft for current status or possible alternatives. These transformers provide coupling and line isolation for ADSL interfaces using the Virata Beryllium chip set. They feature very low leakage inductance, stable primary inductance from -40°C to +85°C and longitudinal balance optimized for the best overall performance at ADSL transmission speeds. In addition to the standard model shown, Coilcraft can provide custom transformers with other turns ratios. For free evaluation samples or to discuss custom designs, contact Coilcraft or visit www.coilcraft.com. Part number Style Chip set X8388-C SMT Virata Beryllium Dielectric Part strength Turns ratio number (V) line : chip X8388-C2300 1 : 1.21 Line side inductance (mH) 600 ±5% Leakage DCR max (Ohms) inductance max (µH) Chip side Line side 6 1.27 (7-6), 1.19 (9-8) 1.16 (2-3, 4-5) Longitudinal balance min (dB) 45 (20 kHz – 600 kHz) Designed to meet UL 1950 1.All electrical specifications referenced to line side. 2.Operating temperature range -40°C to +85°C. 3.Electrical specifications at 25°C. Dot above pin1 6 Line side E 5 10 9 3 4 8 5 6 F C A Chip side 2 7 1 B A max B max C max E F typ G typ 0.5300.6990.5000.5900.0980.061 × 0.050 13,46 17,75 12,70 14,99 2,50 1,55 × 1,27 Recommended Land Pattern G Tape and reel:175/13″ reel 32 mm tape width For packaging data see Tape and Reel Specifications section. US +1-847-639-6400 [email protected] UK +44-1236-730595 [email protected] Taiwan +886-2-2264 3646 [email protected] China +86-21-6218 8074 [email protected] Singapore + 65-6484 8412 [email protected] Document 255 Revised 11/02/04 © Coilcraft Inc. 2013 This product may not be used in medical or high risk applications without prior Coilcraft approval. Specification subject to change without notice. Please check web site for latest information.