X8390-A COILCRAFT | Alldatasheet
Document overview
- Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
- PDF pages: 1
Technical content
© Coilcraft, Inc. 2007 Specifications subject to change without notice. Please check our website for latest information. xDSL Interface Transformers Document 231 Document 231 Revised 01/16/08 These transformers provide coupling and line isolation for xDSL interfaces using the Linear Technology LT1794, LT1795 and LT1886 amplifiers. They feature very low leakage inductance, stable pri- mary inductance from -40°C to +85°C and longitudinal balance optimized for the best overall performance at ADSL and HDSL2 transmission speeds. In addition to the standard models shown, Coilcraft can provide custom transformers with other turn ratios. For free evaluation samples or to discuss custom de- signs, contact Coilcraft or visit www.coilcraft.com. 1. Turns ratio is with the chip side windings connected in series. 2. All electrical specifications referenced to line side. 3. Operating temperature range -40°C to +85°C. 4. Electrical specifications at 25°C. Line side Leakage Part inductance inductance DCR max (Ohms) number Style Chip set (mH) (µH) max Chip side Line side X8390-A SMT LT1794, LT1886 0.368 ±5% 11 0.841 (6-9, 7-10) 1.95 (4-2) X8502-A SMT LT1794, LT1886 0.368 ±5% 11 0.895 (6-9, 7-10) 1.70 (4-2) X8505-A SMT LT1886 0.368 ±5% 11 0.750 (6-9, 7-10) 1.85 (4-2) X8504-A SMT LT1795 0.368 ±5% 11 0.875 (6-9, 7-10) 1.75 (4-2) Dielectric Longitudinal Part strength Turns ratio 1 balance Designed number (V) line : chip (dB) min to meet X8390-A 1500 1 : 1 45 (20 kHz - 1.1 MHz) UL 1459, 1950 X8502-A 1500 1 : 1.2 42 (20 kHz - 1.1 MHz) UL 1459, 1950 X8505-A 1500 1 : 1.5 42 (20 kHz - 1.1 MHz) UL 1459, 1950 X8504-A 1500 1 : 1.4 42 (20 kHz - 1.1 MHz) UL 1459, 1950 For LT1794, LT1795 and LT1886 Recommended Land Pattern A Dot above pin1 C B E F G Tape and reel 175 per 13″ reel Plastic tape: 32 mm wide, 0.5 mm thick, 28 mm pocket spacing, 12.93 mm pocket depth A max B max C max E F typ G typ 13,46 17,75 12,70 14,99 2,50 1,55 × 1,27 Line side Chip side This product is not RoHS-compliant. Contact Coilcraft for current status or possible alternatives. Chip side windings to be connected in series on the PC board