KSZ8841-16 Micrel Semiconductor, KSZ8841-16 Datasheet - Page 93

• Manufacturer Part Number: KSZ8841-16
• Description: Single-port Ethernet Mac Controller With Non-pci Interface
• Manufacturer: Micrel Semiconductor

Selection of Isolation Transformers
A 1:1 isolation transformer is required at the line interface.
is
Table 27 gives recommended transformer characteristics.
Selection of Reference Crys
November 2005
Micrel Confidential
recommended for exceeding FCC requirements.
Parameter
Turns ratio
Open-circuit inductance (min)
Leakage inductance (max)
Inter-winding capacitance (max)
D.C. resistance (max)
Insertion loss (max)
HIPOT (min)
Chacteristics
Frequency
Frequency tolerance (max)
Load capacitance (max)
Series resistance
Magnetic Manufacturer
Pulse
Pulse (low cost)
Transpower
Bel Fuse
Delta
LanKom
Table 29. Typical Reference Crystal Characteristics
Table 2
Table 27. Transformer Selection Criteria
tal
Part Number
H1102
H1260
HB726
S558-5999-U7
LF8505
L
F-H41S
8. Q
ualified Single Port Magnetic
93
12pF
20
Value
1 CT : 1 CT
350µH
0.4µH
0.9Ω
1.0dB
1500Vrms
Value
25
±50
25
An isolation transformer with integrated common-mode choke
Auto MDI-X
Yes
Yes
Yes
Yes
Yes
Yes
Test Condition
100mV, 100kHz, 8mA
1MHz (min)
0MHz – 65MHz
Units
MHz
ppm
pF
Ω
s
Number of Port
1
1
1
1
1
1
KSZ8841-16/32 MQL/MVL
Rev 1.3