8240 Datasheet, PDF (1/1 Pages) Filtran LTD – LAN 10/100 BASE-T Single Port Transformer Modules

LAN
10/100 BASE-T
Single Port Transformer Modules
• Meets all IEEE 802.3 and ANSI X3.263 standards including
350µH OCL with 8mA bias
• IC grade transfer-molded package suitable for reflow soldering
temperatures up to 235°C
• Applicable with AMD, Kendin Semiconductor and Quality
Semiconductor transceivers
8240-8247
MECHANICAL AND SCHEMATIC (All dimensions in inches)
SUGGESTED PAD LAYOUT
1
2
3
6
7
8
NOTE: 8245 incorporates an autotransformer, so there is
no connection to the TX transformer center tap.
SCHEMATIC 1
SCHEMATIC 2
TRANSMIT
TRANSMIT
16
16
10
15
14
12
14
15
11
RECEIVE
RECEIVE
11
1
7
10
3
5
9
2
6
TRANSMIT
16
10
14
12
12
15
11
RECEIVE
1
7
3
5
2
6
SCHEMATIC 3
ELECTRICAL SPECIFICATIONS @ 25˚C
Part
Number
8240
8241
8242
8243
8244
8245
8246
8247
Turns Ratio
(±5%)
Receive
1:1
1:1
1:1
1:1
1:1
1:1
1:1
1:1
Transmit
√2:1
√2:1
√2:1
√2:1
1.25:1
1: √2
√2:1
1:√2
Insertion Loss
100 kHz - 100 MHz
(dB MAX)
-1.0
-1.0
-1.0
-1.0
-1.0
-2.0
-1.0
-2.0
Return Loss
(dB MIN)
30 MHz
-16
-16
-16
-16
-16
-18
-16
-16
60 MHz
-12
-12
-12
-12
-12
-12
-12
-11
80 MHz
-10
-10
-10
-10
-10
-11
-10
-10
30 MHz
-45
-45
-45
-45
-45
-45
-45
-45
Crosstalk
(dB MIN)
60 MHz
-38
-38
-38
-38
-38
-38
-38
-38
100 MHz
-34
-34
-34
-34
-34
-34
-34
-34
Schematic
1
2
1
3
1
3
1
3
Hipot
(Vrms MIN)
1500
1500
1500
1500
1500
1500
1500
1500
229 Colonnade Road, Nepean, Ontario, Canada K2E 7K3
An ISO 9001 Registered Company Tel: [phone] Fax: [phone] www.filtran.com