LAN8808D datasheet(62/80 Pages) MICROCHIP

62 / 80 page

LAN8808D

DS00005833C-page 62

Note 6-8

IEEE 802.3 clause 40.6.1.1.2 Test Mode 1

Note 6-9

From 1/2 of average VOP, Test Mode 1

Note 6-10

IEEE 802.3 clause 40.6.1.1.2 distortion processing

Note 6-11

Measured at line side of transformer, line replaced by 100

 (±1%) resistor.

Note 6-12

Offset from 16 ns pulse width at 50% of pulse peak.

Note 6-13

Peak to Peak, measured differentially.

TABLE 6-7:

1000BASE-T TRANSCEIVER CHARACTERISTICS

Parameter

Symbol

Min

Typ

Max

Unit

Note

Peak Differential Output Voltage

IEEE 802.3 clause 40.6.1.2.1

VOP

670

—

820

Note 6-8

Signal Amplitude Symmetry

IEEE 802.3 clause 40.6.1.2.1

VSS

——

Note 6-8

Signal Scaling

IEEE 802.3 clause 40.6.1.2.1

VSC

——

Note 6-9

Output Droop

IEEE 802.3 clause 40.6.1.2.2

VOD

73.1

—

Note 6-8

Transmission Distortion

IEEE 802.3 clause 40.6.1.2.4

——

—

Note 6-10

TABLE 6-8:

100BASE-TX TRANSCEIVER CHARACTERISTICS

Parameter

Symbol

Min

Typ

Max

Unit

Note

Peak Differential Output Voltage

ANSI X3.263 clause 9.1.2.2

VOUT

±0.95

—

±1.05

Note 6-11

Signal Amplitude Symmetry

ANSI X3.263 clause 9.1.4

VSS

——

Note 6-11

Signal Rise and Fall Time

ANSI X3.263 clause 9.1.6

TRF

3—5

Note 6-11

Rise and Fall Symmetry

ANSI X3.263 clause 9.1.6

TRFS

0—

0.5

Note 6-11

Duty Cycle Distortion

ANSI X3.263 clause 9.1.8

DCD

——

±0.25

Note 6-12

Overshoot and Undershoot

ANSI X3.263 clause 9.1.3

VOS

——

—

Output Jitter

ANSI X3.263 clause 9.1.9

——

0.7

1.4

Note 6-13

Reference Voltage of ISET

(using 6.04kΩ - 1% resistor)

VSET

—0.61—

—

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