H28161-A Datasheet, PDF (1/2 Pages) Coilcraft lnc. – HDSL2 Transformers

Document 202-1
HDSL2 Transformers
This product is not RoHS-compliant. Contact Coilcraft
for current status or possible alternatives.
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.
Part
number
H28161-A
H28159-A
H28160-A
H27649-B
H27650-A
H27695-A
H28223-B
H28224-B
Style
Leaded
Leaded
SMT
Leaded
Leaded
SMT
Leaded
SMT
Data
rate
(kb/s)
1500
1500
1500
1500
1500
1500
1500
1500
Turns
ratio
chip:line
Primary
inductance
±15% (mH)
1 CT:2.3 CTS
2.0
1 CT:2.3 CTS
2.0
1 CT:2.3 CTS
2.0
1 CT:2 CTS
2.0
1 CT:2 CTS
2.0
1 CT:2 CTS
2.0
1 CT:2.3 CTS
2.0
1 CT:2.3 CTS
2.0
Leakage
inductance
max (µH)
25
30
30
25
25
25
30
30
Capacitance
DCR max (Ohms)
max (pF) Chip side
Line side
90
1.5 (9-7) 1.5 (1-4), 1.5 (2-5)
55
2.0 (8-6) 2.0 (1-2), 2.0 (3-4)
55
2.0 (8-6) 2.0 (1-2), 2.0 (3-4)
90
1.5 (9-7) 1.5 (1-4), 1.5 (2-5)
55
2.0 (8-6) 2.0 (1-2), 2.0 (3-4)
55
2.0 (8-6) 2.0 (1-2), 2.0 (3-4)
65
1.85 (10-7) 2.1 (1-4), 2.1 (2-5)
65
1.85 (10-7) 2.1 (1-4), 2.1 (2-5)
Part
number
H28161-A
H28159-A
H28160-A
H27649-B
H27650-A
H27695-A
H28223-B
H28224-B
DC bias
capacity
(mA)
100
100
100
100
100
100
100
100
Dielectric
strength
(V)
2300
3000
3000
2300
3000
3000
3000
2300
Return loss
min (dB)
min (dB)
13 @ 40 kHz
13 @ 40 kHz
13 @ 40 kHz
14 @ 40 kHz
14 @ 40 kHz
13 @ 320 kHz
12 @ 320 kHz
12 @ 320 kHz
15 @ 320 kHz
13 @ 320 kHz
14 @ 40 kHz
13 @ 40 kHz
13 @ 40 kHz
13 @ 320 kHz
13 @ 320 kHz
13 @ 320 kHz
1. All electrical specifications referenced to line side.
2. Operating temperature range -40°C to +85°C.
3. Electrical specifications at 25°C.
Longitudinal
balance
typ (dB)
65 @ 40 kHz
65 @ 40 kHz
65 @ 40 kHz
65 @ 40 kHz
65 @ 40 kHz
65 @ 40 kHz
65 @ 40 kHz
65 @ 40 kHz
THD
typ (dB)
-85 @ 20 kHz
-85 @ 20 kHz
-85 @ 20 kHz
-85 @ 20 kHz
-85 @ 20 kHz
-85 @ 20 kHz
-85 @ 20 kHz
-85 @ 20 kHz
© Coilcraft, Inc. 2007
Specifications subject to change without notice.
Please check our website for latest information. Document 202-1 Revised 02/11/08