DM9161CI datasheet(45/47 Pages) DAVICOM

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DM9161CI

10/100 Mbps Fast Ethernet Physical Layer Single Chip Transceiver

Final

Version: DM9161CI-DS-F01

February 22, 2012

9.4.21 Magnetic Selection Guide

Refer to Table 2 for transformer requirements.

Transformers, meeting these requirements, are

available from a variety of magnetic manufacturers.

Designers should test and qualify all magnetic before

using them in an application. The transformers listed

in Table 2 are electrical equivalents, but may not be

pin-to-pin equivalents.

• Refer to the following tables 5-1 and 5-2 for 10/100M magnetic sources and specification requirements. The

magnetics which meet these requirements are available from a variety of magnetic manufacturers. Designers

should test and qualify all magnetic specifications before using them in an application. The magnetics listed in

the following table are electrical equivalents, but may not be pin-to-pin equivalents.

Manufacturer

Part Number

MAGCOM`

HS9016, HS9024

Delta

LFE8563-DC, LFE8563T-DC

Table 5-1: 10/100M Magnetics Sources

Parameter

Values

Units

Test Condition

Tx / RX turns ratio

1:1 CT / 1:1

Inductance

350

μH (Min)

Insertion loss

1.1

dB ( Max )

1 – 100 MHz

-18

dB ( Min )

1 –30 MHz

-14

dB ( Min )

30 – 60 MHz

Return loss

-12

dB ( Min )

60 – 80 MHz

-40

dB ( Min )

1 – 60 MHz

Differential

common

mode rejection

-30

dB ( Min )

60 – 100 MHz

Transformer isolation

1500

Table 5-2: Magnetic Specification Requirements

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