Transformers for Broadband Access & Fibre ... - Nuvotem Talema
Transformers for Broadband Access & Fibre ... - Nuvotem Talema
Transformers for Broadband Access & Fibre ... - Nuvotem Talema
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LTM-110A Line Interface 56kbps Modem Trans<strong>for</strong>mer<br />
Features<br />
• designed <strong>for</strong> V.90 applications (56kbps)<br />
• very low distortion<br />
• wide frequency range with flat response<br />
• meets IEC 60950 Supplementry Insulation levels, 1500V min.<br />
• excellent quality at competitive price due to high<br />
volume production<br />
• manufactured in an ISO-9001:2000, TS-16949:2002<br />
and ISO-14001:2004 certified <strong>Talema</strong> facility<br />
• fully RoHS compliant<br />
Electrical Specifications @ 25°C<br />
• Operating Temperature<br />
-40° to +85°C<br />
Parameter<br />
Frequency Response<br />
Insertion Loss<br />
Return Loss<br />
THD<br />
THD<br />
DC Resistance<br />
Inductance<br />
Leakage<br />
Inductance<br />
Conditions<br />
Typical<br />
Limit<br />
Units<br />
200<br />
- 4000Hz<br />
± 0. 5<br />
- dB<br />
2000Hz,<br />
RL600 Ohms<br />
1.<br />
0<br />
1.5<br />
max<br />
dB<br />
200<br />
- 4000Hz<br />
22<br />
18<br />
min<br />
dB<br />
150Hz,<br />
-3dBm<br />
-70<br />
- dB<br />
200Hz,<br />
-10dBm<br />
-85<br />
- dB<br />
per<br />
winding<br />
70<br />
± 10%<br />
Ohms<br />
1000Hz,<br />
1V<br />
6.<br />
0<br />
- H<br />
1000Hz,<br />
1V<br />
17<br />
- mH<br />
Turns<br />
Ratio<br />
1 : 1<br />
± 2%<br />
-<br />
Mechanical Dimensions & Pinout<br />
0.650<br />
(16.50)<br />
0.650<br />
(16.50)<br />
1 3<br />
6 4<br />
(View from Top)<br />
0.445<br />
(11.30)<br />
TALEMA IN LTM-110A<br />
WK/YR<br />
0.217±0.012<br />
(5.50±0.3)<br />
0.295<br />
(7.50)<br />
0.492<br />
(12.50)<br />
Schematic<br />
3 1<br />
4 6<br />
Dimensions are max. unless otherwise stated:<br />
Inches(Millimeters)<br />
Pinout spacings are nominal. Pins: 0.026 x 0.018<br />
(0.66x0.45)<br />
Equivalent Circuit: (Referenced to Primary @ 1V, 1kHz)<br />
R PRI<br />
= 70 Ohms<br />
LL = 17.5mH<br />
R SEC<br />
= 70 Ohms<br />
Line<br />
L P<br />
= 6.2H<br />
R P<br />
= 35k Ohms<br />
Modem<br />
Germany: Int.+49 89 - 841 00-0 • Ireland: Int.+35 374 - 954 8666 • Czech Rep: Int.+420 377 - 338 351 • India: Int.+91 427 - 244 1325<br />
http://www.talema-nuvotem.com<br />
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