H27649-B COILCRAFT [Coilcraft lnc.], H27649-B Datasheet
H27649-B
Manufacturer Part Number
H27649-B
Description
HDSL2 Transformers
Manufacturer
COILCRAFT [Coilcraft lnc.]
Datasheet
1.H27649-B.pdf
(2 pages)
H28161-A
H28159-A
H28160-A
H27649-B
H27650-A
H27695-A
H28223-B
H28224-B
H28161-A
H28159-A
H28160-A
H27649-B
H27650-A
H27695-A
H28223-B
H28224-B
1. All electrical specifications referenced to line side.
2. Operating temperature range -40°C to +85°C.
3. Electrical specifications at 25°C.
© Coilcraft, Inc. 2007
number
number
Part
Part
Leaded
Leaded
Leaded
Leaded
Leaded
capacity
Style
DC bias
SMT
SMT
SMT
(mA)
100
100
100
100
100
100
100
100
(kb/s)
Data
1500
1500
1500
1500
1500
1500
1500
1500
rate
Dielectric
strength
2300
3000
3000
2300
3000
3000
3000
2300
(V)
1 CT:2.3 CTS
1 CT:2.3 CTS
1 CT:2.3 CTS
1 CT:2.3 CTS
1 CT:2.3 CTS
1 CT:2 CTS
1 CT:2 CTS
1 CT:2 CTS
chip:line
Turns
ratio
13 @ 40 kHz
13 @ 40 kHz
13 @ 40 kHz
14 @ 40 kHz
14 @ 40 kHz
14 @ 40 kHz
13 @ 40 kHz
13 @ 40 kHz
min (dB)
Specifications subject to change without notice.
Please check our website for latest information.
inductance
±15% (mH)
Primary
Return loss
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
HDSL2 Transformers
13 @ 320 kHz
12 @ 320 kHz
12 @ 320 kHz
15 @ 320 kHz
13 @ 320 kHz
13 @ 320 kHz
13 @ 320 kHz
13 @ 320 kHz
inductance Capacitance
min (dB)
This family of transformers provides optimum perfor-
mance with the Level One SK70740/-41/-42 and other
HDSL2 transceiver chip sets. The series now includes
parts with a 1 CT to 2.3 CTS turns ratio, allowing them to
work with line drivers for lower power supply voltages.
They’re engineered for minimum DC resistance and
very low leakage inductance. Primary inductance with
and without DC bias is stable from -40°C to +85°C.
The return loss, longitudinal balance and THD are
optimized for the best overall performance at the
HDSL2 transmission speed.
For free evaluation samples or to discuss custom de-
signs, please contact Coilcraft.
max (µH)
Leakage
This product is not RoHS-compliant. Contact Coilcraft
for current status or possible alternatives.
25
30
30
25
25
25
30
30
max (pF)
90
55
55
90
55
55
65
65
65 @ 40 kHz
65 @ 40 kHz
65 @ 40 kHz
65 @ 40 kHz
65 @ 40 kHz
65 @ 40 kHz
65 @ 40 kHz
65 @ 40 kHz
Longitudinal
balance
typ (dB)
Document 202-1 Revised 02/11/08
1.85 (10-7) 2.1 (1-4), 2.1 (2-5)
1.85 (10-7) 2.1 (1-4), 2.1 (2-5)
Chip side
1.5 (9-7)
2.0 (8-6)
2.0 (8-6)
1.5 (9-7)
2.0 (8-6)
2.0 (8-6)
DCR max (Ohms)
Document 202-1
1.5 (1-4), 1.5 (2-5)
2.0 (1-2), 2.0 (3-4)
2.0 (1-2), 2.0 (3-4)
1.5 (1-4), 1.5 (2-5)
2.0 (1-2), 2.0 (3-4)
2.0 (1-2), 2.0 (3-4)
-85 @ 20 kHz
-85 @ 20 kHz
-85 @ 20 kHz
-85 @ 20 kHz
-85 @ 20 kHz
-85 @ 20 kHz
-85 @ 20 kHz
-85 @ 20 kHz
Line side
typ (dB)
THD
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H27649-B Summary of contents
Page 1
... Dielectric Part capacity strength number (mA) (V) H28161-A 100 2300 H28159-A 100 3000 H28160-A 100 3000 H27649-B 100 2300 H27650-A 100 3000 H27695-A 100 3000 H28223-B 100 3000 H28224-B 100 2300 1. All electrical specifications referenced to line side. 2. Operating temperature range -40°C to +85°C. ...
Page 2
... Recommended Land Pattern C max E F typ G typ 0.500 0.590 0.098 0.050 × 0.061 inches 12,70 14,99 2,50 1,27 × 1,55 mm H28223-B, H28224-B Chip side Line side Chip side H27649-B, H28161-A Line side Chip side Document 202-2 Revised 02/11/08 ...