Document 231
xDSL Interface Transformers
For LT1794, LT1795 and LT1886
This product is not RoHS-compliant. Contact Co...
Document 231
xDSL Interface Transformers
For LT1794, LT1795 and LT1886
This product is not RoHS-compliant. Contact Coilcraft for current status or possible alternatives.
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 primary 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 designs, contact Coilcraft or visit www.coilcraft.com.
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
Part
number
Style
Chip set
X8390-A X8502-A X8505-A X8504-A
SMT SMT SMT SMT
LT1794, LT1886 LT1794, LT1886
LT1886 LT1795
Line side inductance
(mH)
0.368 ±5% 0.368 ±5% 0.368 ±5% 0.368 ±5%
Leakage
inductance
DCR max (Ohms)
(µH) max
Chip side
Line side
11
0.841 (6-9, 7-10)
1.95 (4-2)
11
0.895 (6-9, 7-10)
1.70 (4-2)
11
0.750 (6-9, 7-10)
1.85 (4-2)
11
0.875 (6-9, 7-10)
1.75 (4-2)
Part
number
X8390-A X8502-A X8505-A X8504-A
Dielectric
strength Turns ratio1
(V)
line : chip
Longitudinal balance (dB) min
1500 1500 1500 1500
1 : 1 45 (20 kHz - 1.1 MHz) 1 : 1.2 42 (20 kHz - 1.1 MHz) 1 : 1.5 42 (20 kHz - 1.1 MHz)...
