2802A Datasheet, PDF (1/2 Pages) Bel Fuse Inc. – MODEM MAGNETICS V.90 Modem Transformers

MODEM MAGNETICS
V.90 Modem Transformers
TM00408
• Provide isolation and balance while minimizing signal • 2802A transformer is designed to match a 600Ω line to a
distortion and insertion loss in high-speed modem
536Ω load
applications
• 2802B transformer is designed to match a 600Ω line to a
• Qualified per Bellcore TR-TSY-000357-1
301Ω load
• Approved by UL and CSA
• Minimum interwinding breakdown voltage of 1000 Vrms
ELECTRICAL SPECIFICATIONS at 25° C
Part
Number
Turns Ratio
± 2%
Insertion
Loss
dB
Return Loss
dB
Frequency
Response
dB
@ 1 kHz 300 Hz - 3500 Hz 200 Hz - 5 kHz
DCR
Ω
max
Harmonic
Distortion
dB
Longitudinal
Balance
dB
Pri
Sec 0 dBm, 600 Hz 300 Hz - 3500 Hz
2802A
1:1
< 0.80
> 30
< 0.1
48
48
< -82
> 60
2802B
1:1
< 2.8
> 20
< 0.2
165
170
< -90
> 60
SCHEMATIC
2802A
2802B
1
6
3
Primary
4
Secondary
©2000 Bel Fuse Inc. Specifications subject to change without notice. 05.00
Bel Fuse Inc. 198 Van Vorst Street, Jersey City, NJ 07302 • Tel [phone] • Fax [phone] • www.belfuse.com
T4-17