ADSL LINE TRANSFORMERS
For Use With Centillium Chipsets
For use with Centillium's CopperFlite™ CT-L50SC04/CT-L50ST81
and CopperLite™ CT-L21SC08/CT-L41SC04 chipsets
Excellent THD performance
Small footprint
Electrical Specifications @ 25°C — Operating Temperature -40°C to +85°C
Part
Number
B2178
B2189
Mounting
SMT
SMT
Matched to
Chipset Number
CT-L21SC08/CT-L41SC04
CT-L50SC04/CT-L50ST81
Application
CO
CO/CPE
Turns Ratio
(± 2%)
(line - chip)
1:1
1.8:1
OCL
(± 10%)
(1-4) with (2-3) short
450 µH @ 10 KhZ, 0.1 V
450 µH @ 30 KhZ, 0.1 V
Leakage Inductance
@ 100 KhZ, 0.1 V
(1-4) with (2-3), (7-10) and (8-9) short
5.0 µH MAX
7.0 µH MAX
Additional Electrical Specifications
Part
Number
B2178
B2189
THD
(Linearity TYP - 10 kHz, 3.0 Vrms)
≤
-67 dB
≤
-67 dB
DC Resistance
Line Side
(1-4) with (2-3) short
≤
1.3
Ω
MAX
≤
1.3
Ω
MAX
Chip Side
(10-7) with (9-8) short
≤
1.3
Ω
MAX
≤
0.9
Ω
MAX
Isolation Voltage
(Vrms)
1500
1500
Longitudinal Balance
(from 10 kHz to 1.1 MHz)
≤
-50 dB
≤
-50 dB
NOTE: Transformers are shipped in trays unless Tape & Reel packaging is specified by adding the suffix
“T”
to the part number (i.e. B2178T).
Mechanical
10 X .028
± .002
0,71
± 0,05
.695
17,65 MAX
.530
13,46
MAX
.394
10,00
MAX
10 X .051
± .002
1,30
± 0,05
Schematics
.605
15,37
.100
2,54
.394
10,00
.098
2,50
1
3
2
4
B2178
10
8
9
Date Code
Country of Mfg.
B21XX
.098
2,50
1:1
B2189
7
1
3
2
4
10
8
9
.516
13,11MAX
.485
12,32
MAX
1.8:1
7
.005/0,13
10 SURFACES
Weight
. . . . . . . . . . . . . .6.2 grams
Tray
. . . . . . . . . . . . . . . . . .60/tray
Dimensions:
Inches
mm
Unless otherwise specified,
all tolerances are ± .010
0,25
For More Information :
UNITED STATES
(Worldwide)
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U.S.A.
http://www.pulseeng.com
TEL: 858 674 8100
FAX: 858 674 8262
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(Northern Europe)
1 & 2 Huxley Road
The Surrey Research Park
Guildford, Surrey GU2 5RE
United Kingdom
TEL: 44 1483 401700
FAX: 44 1483 401701
FRANCE
SINGAPORE
(Southern Europe) (Southern Asia)
Zone Industrielle
F-39270
Orgelet
France
TEL: 33 3 84 35 04 04
FAX: 33 3 84 25 46 41
150 Kampong Ampat
#07-01/02
KA Centre
Singapore 368324
TEL: 65 6287 8998
FAX: 65 6280 0080
TAIWAN, R.O.C.
(Northern Asia)
3F-4, No. 81, Sec. 1
HsinTai Wu Road
Hsi-Chih, Taipei Hsien
Taiwan, R.O.C.
Tel: 886 2 2698 0228
FAX: 886 2 2698 0948
HONG KONG
(China/Hong Kong)
9/F, Phase 2, Tai Sang
Shatin Warehouse Centre
6 Wong Chuk Yeung Street
Fotan, Shatin, Hong Kong
TEL: 852 2788 6588
FAX: 852 2776 1055
DISTRIBUTOR
Performance warranty of products offered on this data sheet is limited to the parameters specified. Data is subject to change without notice. Other brand and product
names mentioned herein may be trademarks or registered trademarks of their respective owners.
Printed on recycled paper. ©2003 Pulse Engineering, Inc.
B979.A (10/03)
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