X8390-A_12 Datasheet, PDF (1/1 Pages) Coilcraft lnc. – xDSL Interface Transformers

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)
1  : 1.4 42 (20 kHz - 1.1 MHz)
Designed
to meet
UL 1459, 1950
UL 1459, 1950
UL 1459, 1950
UL 1459, 1950
Dot above pin1
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.
C
4. Electrical specifications at 25°C.
Line side
4
2
Chip side
6
9
7
Recommended
Land Pattern
1
5
F
A
G
1
E
B
6
10
10
Chip side windings to be connected
in series on the PC board
A max B max C max E
0.530 0.699 0.500 0.590
13,46 17,75 12,70 14,99
F typ
0.098
2,50
G typ
0.061 × 0.050
1,55 × 1,27
US [phone] [e-mail]
UK [phone] [e-mail]
Taiwan [phone] [e-mail]
China [phone] [e-mail]
Singapore + 65-6484 8412 [e-mail]
Document 231  Revised 01/16/08
© Coilcraft Inc. 2012
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check out web site for latest information.