LAN
10/100 Base-T Single Port
Transformer Module
8261- 8263
• Provides excellent EMI filtering
• Designed for use with data grade unshielded twisted pair cable (UTP-5)
• Suitable for adapter card cable and multiport applications
• Meets IEEE 802.3 and ANSI X3.263 standards, including 350µH OCL
with 8mADC bias
MECHANICAL AND SCHEMATIC
(All dimensions in inches)
SUGGESTED PAD LAYOUT
SCHEMATIC
Center-tapped inductor not included in 8261, so pin 12 connects to the transformer center tap.
ELECTRICAL SPECIFICATION @ 25˚C
Insertion
Loss
(dB MAX)
0.1-100
MHz
8261
8262
1
8261 - 8263
Part
Number
Return Loss
(dB MIN @ 100Ω)
1-30
MHz
-22
-22
-20
40
MHz
-20
-20
-20
50
MHz
-18
-18
-18
60-80
MHz
-12
-12
-14
Differential to Common
Mode Rejection
(dB MIN)
30
MHz
-42
-45
-42
60
MHz
-38
-40
-36
100
MHz
-32
-35
-33
30
MHz
-50
-50
-50
Crosstalk
(dB TYP)
60
MHz
-40
-40
-40
100
MHz
-40
-40
-40
Hipot
(Vrms MIN)
ISSUE: A 24/07/01
-1.0
-1.0
-1.0
1500
1500
1500
8263
1. Rise time optimized for National’s DP83843.
An ISO 9001 Registered Company
229 Colonnade Road, Nepean, Ontario, Canada K2E 7K3
Tel: (613) 226-1626 Fax: (613) 226-7124 www.filtran.com
Microcontroller MCU
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