COILCRAFT B0726-EL

Document 443
ADSL Transformers
The B0726-E and C1350-A ADSL transformers have
been approved by Broadcom for use with their BCM6335,
BCM6338, BCM6345, and BCM6348 ADSL CPE Modem chipsets and their BCM6301 5-Volt Line Driver.
These transformers feature split windings for chip receive, chip transmit and line side. They offer 1875 Vrms
Part
number1
ADSL Inductance2
Annex ±5% (µH)
isolation, low DC resistance, low leakage inductance and
excellent total harmonic distortion. Their compact design
makes them suitable for high density applications.
Coilcraft can also custom design transformers to meet
your specific requirements. For free evaluation samples,
contact Coilcraft or visit www.coilcraft.com.
Leakage
inductance3
max (µH)
DCR max
(Ohms)
For Broadcom ADSL
CPE Modem chipsets
Interwinding
Turns ratio
capacitance4
(pF)
chip tx : chip rx chip tx : line
THD5
typ (dB)
B0726-EL_
A
400
0.815 (1 – 3) (2 – 4)
0.232 (5 – 7) (6 – 8)
0.831(16 – 11) (14 – 9)
18.0
22.0
1 : 4.25
1 : 4.25
-95.0
C1350-AL_
B
100
0.815 (1 – 3) (2 – 4)
0.232 (5 – 7) (6 – 8)
0.831 (16 – 11) (14 – 9)
18.0
22.0
1 : 4.25
1 : 4.25
-93.0
1. When ordering, please specify a packaging code:
Packaging:
C1350-ALD
D = 13″ machine ready reel. EIA-481 embossed plastic
tape (200 per full reel).
B = Less than full reel. In tape, but not machine ready.
To have a leader and trailer added ($25 charge), use
code letter D instead.
2. Inductance measured at 10 kHz, 0.1 Vrms, 0 Adc between pins 9 and 16
with pins 11 and 14 connected.
3. Leakage inductance measured at 100 kHz, 0.1 Vrms between pins 9
and 16 with all other pins shorted.
4. Capacitance tested between pins 1 and 16 with all other pins shorted.
5. Total harmonic distortion measured at 30 kHz.
6. Operating temperature range −40°C to +85°C.
7. Electrical specifications at 25°C
0.500 max
12,70
Chip
transmit
1
0.039
1,00
7
6
14
8
1
16
11
Line
side
1
16
0.020 (12×)
0,51
0.550 max
13,97
8
0.067
1,70
0.134
3,40
0.590
14,99
9
Recommended
Land Pattern
0.004 / 0,10
0.650max
16,51
5
Chip
receive
0.201
5,10
9
0.134
3,40
0.099
2,51
0.099
2,51
3
2
0.067
1,70
4
0.670
17,02
Weight:
6.1 – 6.3 g
Terminations: Tin-silver over tin over nickel over phos bronze
Tape and reel: 200/13″ reel 44 mm tape width
For packaging data see Tape and Reel Specifications section.
Specifications subject to change without notice.
Please check our website for latest information.
© Coilcraft, Inc. 2008
Document 443
Revised 10/08/08