KS8001L View Datasheet(PDF) - Micrel
Part Name
Description
MFG CO.
'KS8001L' PDF : 46 Pages View PDF
Micrel
KSZ8001
Selection of Isolation Transformer
A 1:1 isolation transformer is required at the line interface. An isolation transformer with integrated common-mode choke is
recommended for exceeding FCC requirements. The following table gives recommended transformer characteristics.
Transformer Selection Criteria
Parameter
Turns Ratio
Open-Circuit Inductance (min.)
Leakage Inductance (max.)
Inter-Winding Capacitance (max.)
D.C. Resistance (max.)
Insertion Loss (max.)
HIPOT (min.)
Value
1 CT : 1 CT
350 uH
0.4 uH
12 pF
0.9 Ohms
1.0 dB
1500 Vrms
Test Condition
100 mV, 100 kHz, 8 mA
1 MHz (min.)
0-65 MHz
Single Port
Magnetic manufacturer
Pulse
Bel Fuse
Bel Fuse
Bel Fuse
YCL
Transpower
Delta
LanKom
Magnetic Vendor Selection Lists
Part number
H1102
S558-5999-U7
SI-46001
SI-50170
PT163020
HB726
LF8505
LF-H41S
AUTO MDIX
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Number of port
1
1
1
1
1
1
1
1
Selection of Reference Crystal
An oscillator or crystal with the following typical characteristics is recommended.
Charateristics
Frequency
Frequency Tolerance(max)
Load Capacitance (max)
Series Resistance
Value
25.00000
± 50
20
40
Units
MHz
ppm
pF
Ω
June 2009
Revision 1.04
44
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