PT79546 Modem Transformer0 pages

Mar 29, 2012

MODEM TRANSFORMER PT79546
Qualified to Teridian 73M2901CE low speed modem and the
73M1903 modem AFE in high and low speed applications chip sets.

Electrical Specifications @ 25°C
Impedance, Primary
600Ω Typ. @ 1kHz 1Vrms*
Total Harmonic Distortion
Insertion loss
Frequency response
Return loss
Return loss
D.C. resistance @20°C

-82 dB Max. @ 600Hz -10dBm*
1.90 dB Max. @ 1kHz, 0dBm*
±0.15 dB @ 200-4000 Hz 0dBm* (relative to 1kHz)
20 dB Min. @ 200Hz Per 600 Ohm Match.
20 dB Min. @ 200Hz Per Pan-Euro CTR21 Match
Primary = 82 ±15%
Secondary = 106 ±15%
Turns Ratio (4-3-2) : (9-7)
1CT : 1 ±2%
Dielectric strength Pri.to Sec.
1500Vrms 1 min. (Production test 2000Vrms 2s minimum)
D.C. Current in Primary
0mA
Operating Temperature
-40 to +105 °C
Storage Temperature
-40 to +125 °C
Shunt Inductance Lp, Primary
3.2H Min. @1kHz 1Vrms.
Shunt Loss Rp, Primary
1.2M Min. @ 1kHz 1Vrms.
Leakage Inductance
4.5mH ±15% @ 1kHz 1Vrms.
(* = test with 420 load at Secondary)

Mechanical Outline and Schematic
Pri

Dot indicates
pin 1

d PT79546
DATE PRC

Sec

2

9

13.5 MAX

3
4

7

SCHEMATIC

2.5 MIN
2.54 (4X)
1 2 3 4 5

0.60 TYP
(10X)

10.16

14.5 MAX

All dimensions in millimeters
Unless otherwise specified, tolerance ±0.25mm

10 9 8 7 6

14.5 MAX

600 Ohm Match

DATATRONIC:

Pan-Euro CTR21 Match

28151 Highway 74, Romoland, CA 92585 Tel 951-928-7700, FAX 951-928-7701 Email: ddisales@datatronics.com
499 King’s Road, Hong Kong Tel: (852) 2562 3858, (852) 2564 8477 Fax: (852) 2565 7214, (852) 2563 1290
All specifications are subject to change without notice.