HDSL LINE TRANSFORMERS
For Conexant Chipsets
Excellent THD performance
Small footprint
Designed to meet UL1950 supplementary insulation
requirements for working voltage up to 250Vrms
Electrical Specifications @ 25°C — Operating Temperature -40°C to +85°C
Part
Number
B1017
B1018
B1028
1
B1020A
B1040A
1
B1075
Mount.
THT
THT
SMT
THT
SMT
THT
Matched to
Conexant's
Chipset No.
BT8921/BT8970
BT8921/BT8970
BT8921/BT8970
RS8973
RS8973
RS8973
Application
784Kpbs
1168Kpbs
1168Kpbs
272 to 2320Kpbs
272 to 2320Kpbs
272 to 2320Kpbs
Turns Ratio Inductance - Line Side Leakage Inductance - Line Side
Line - Chip
@ 10kHz, 100mV
@100kHz
(±2%)
(1-5) with (2-4) shorted (1-5) with (2-4) and (7-9) shorted
2CS:1
2CS:1CT
2CS:1CT
2CS:1
2CS:1
2CS:1CT
3.0mH ±6%
2.0mH ±10%
2.0mH ±6%
2.0mH ±6%
2.0mH ±10%
2.0mH ±6%
15µH MAX @ 0.02Vrms
13µH MAX @ 0.10Vrms
11µH MAX @ 0.10Vrms
6.5µH MAX @ 0.02Vrms
6.5µH MAX @ 0.02Vrms
8µH MAX @ 0.02Vrms
DC Resistance
Line Side
(1-4) = (2-5)
≤
1.25Ω
≤
1.25Ω
≤
1.20Ω
≤
2.00Ω
≤
1.60Ω
≤
2.00Ω
Chip Side
(7-9)
≤
1.00Ω
≤
1.00Ω
≤
1.00Ω
≤
1.10Ω
≤
1.05Ω
≤
0.70Ω
Additional Electrical Specifications
Part
Number
B1017
B1018
B1028
B1020A
B1040A
B1075
1
2
Longitudinal Balance
(dB)
≤
-53 (40kHz to 200kHz)
≤
-53 (30kHz to 300kHz)
≤
-50 (40kHz to 300kHz)
≤
-50 (30kHz to 300kHz)
≤
-50 (30kHz to 420kHz)
≤
-50 (30kHz to 300kHz)
Ω
THD @ 135Ω
(dB)
≤
-70
(10kHz, 5.0Vrms)
≤
-70
(40kHz, 1.85Vrms)
≤
-70
(20kHz, 4.5Vrms)
≤
-70
(10kHz, 5.0Vrms)
≤
-70
(10kHz, 5.0Vrms)
≤
-70
(10kHz, 5.0Vrms)
Ω
Insertion Loss @ 135Ω
(dB)
≤
0.40 (26kHz to 200kHz)
≤
0.50 (40kHz)
(Data
not available)
≤
0.65 (30kHz to 580kHz)
≤
0.60 (30kHz to 580kHz)
≤
0.50 (30kHz to 580kHz)
Ω
Return Loss @ 135Ω
(dB)
≥
19 (40kHz to 200kHz)
≥
16 (40kHz to 300kHz)
≥
16.5 (40kHz to 300kHz)
≥
16 (40kHz to 300kHz)
≥
16 (40kHz to 300kHz)
≥
16 (40kHz to 300kHz)
Isolation Voltage
(Vrms @ 60 sec)
1500
1500
1500
1500
1500
1500
Transformers are shipped in trays unless Tape & Reel packaging is specified by adding the suffix
“T”
to the part number (i.e. B1028T)
DCR on the chip side of part number B1075 is given for (7-8) = (8-9)
Mechanicals
B10XX
(THT)
Date Code
Country of Mfg.
Schematics
.605
15,37
.100
2,54
.394
10,00
MAX
10
X .051
± .002
1,30
± 0,05
.394
10,00
.098
2,50
B10XX
(SMT)
B10XX
Weight
. . . . .6.2 grams
Tray
. . . . . . . . .60/tray
10
X .028
± .002
0,71
± 0,05
.695
17,65
MAX
B1017, B1020A, B1040A
1
.530
13,46
MAX
Date Code
Country of Mfg.
B10XX
.098
2,50
Line
4
2
5
2:1
9
7
Chip
.500
12,70
MAX
.516
13,11
MAX
.485
12,32
MAX
10
X
.018
0,46
.173 ± .015
4,39
± 0,38
.394
10,00
.550
13,97
MAX
.098
2,50
.394
10,00
.547
13,89
MAX
10
X 0°
8°
For More Information:
Pulse Worldwide
Headquarters
12220 World Trade Drive
San Diego, CA 92128
U.S.A.
www.pulseeng.com
TEL: 858 674 8100
FAX: 858 674 8262
Dimensions:
Inches
mm
B1018, B1028, B1075
1
9
.004 MIN
0,10
4
.005/0,13
8
Chip
Line
2
.031
± .006
10
SURFACES
10
X
0,79
± 0,15
7
5
2:1
Unless otherwise specified, all tolerances are ± .010
0,25
Pulse
Northern Europe
3 Huxley Road
Surrey Research Park
Guildford, Surrey GU2 5RE
United Kingdom
TEL: 44 1483 401700
FAX: 44 1483 401701
Pulse
Southern Europe
Zone Industrielle
F-39270
Orgelet
France
TEL: 33 3 84 35 04 04
FAX: 33 3 84 25 46 41
Pulse
Pulse North China
China Headquarters
Room 1002
No. 1
Industrial District
Changan, Dongguan
China
TEL: 86 769 5538070
FAX: 86 769 5538870
No. 819
Nanjing West Rd
Shanghai
China
TEL: 86 21 32181071
FAX: 86 21 32181396
Pulse South Asia
150 Kampong Ampat
#07-01/02
KA Centre
Singapore 368324
TEL: 65 6287 8998
FAX: 65 6280 0080
Pulse North Asia
3F-4, No. 81, Sec. 1
Hsin Tai Wu Road
Hsi-Chih
Taipei Hsien
Taiwan
TEL: 886 2 26980228
FAX: 886 2 26980948
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.
© Copyright, 2005. Pulse Engineering, Inc. All rights reserved.
www.pulseeng.com
B978.B (12/05)
Test/Measurement
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