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X8505-A Datasheet

xDSL Interface Transformers

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Document 231
xDSLInterfaceTransformers
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 13reel  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
SMT
LT1794, LT1886
X8502-A
SMT
LT1794, LT1886
X8505-A SMT LT1886
X8504-A SMT LT1795
Line side
inductance
(mH)
0.368 ±5%
0.368 ±5%
0.368 ±5%
0.368 ±5%
inLdeuacktaagnec e 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
Dielectric
strength Turns ratio1
(V) line : chip
Longitudinal
balance
(dB) min
X8390-A 1500 1 : 1 45 (20 kHz - 1.1 MHz)
X8502-A 1500 1 : 1.2 42 (20 kHz - 1.1 MHz)
X8505-A 1500 1 : 1.5 42 (20 kHz - 1.1 MHz)
X8504-A 1500 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.
4. Electrical specifications at 25°C.
C
Line side
4
2
Chip side
6
9
7
10
Chip side windings to be connected
in series on the PC board
Recommended
B
Land Pattern
1 56
F
A
G1
E
10
A max B max C max E
F typ G typ
0.530 0.699 0.500 0.590 0.098 0.061 × 0.050
13,46 17,75 12,70 14,99 2,50 1,55 × 1,27
US +1-847-639-6400 sales@coilcraft.com
UK +44-1236-730595 sales@coilcraft-europe.com
Taiwan +886-2-2264 3646 sales@coilcraft.com.tw
China +86-21-6218 8074 sales@coilcraft.com.cn
Singapore + 65-6484 8412 sales@coilcraft.com.sg
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.


Part Number X8505-A
Description xDSL Interface Transformers
Maker Coilcraft
Total Page 1 Pages
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