82575EB datasheet(39/62 Pages) INTEL

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Voltage Ramp and Sequencing Recommendations — Intel® 82575EB Gigabit Ethernet Controller

317679-004

Intel® 82575EB Gigabit Ethernet Controller

Revision: 2.11

Datasheet

January 2011

Table 4.

1.8 V Supply Voltage Ramp

Table 5.

1.0 V Supply Voltage Ramp

Parameter

Description

Min

Max

Unit

Rise Time

Time from 10% to 90% mark

0.1

1001

1. Good design practices achieve voltage ramps to within the regulation bands in approximately 20 ms or less.

Monotonicity

Voltage dip allowed in ramp

N/A

Slope

Ramp rate at any time between 10% to 90%

60000

mV/ms

Operational

Range

Voltage range for normal operating

conditions

1.71

1.89

Ripple

Maximum voltage ripple at a bandwidth

equal to 1 MHz

N/A

mVpeak-peak

Overshoot

SettlingTime

Overshoot time upon ramp2

2. Excessive overshoot can affect long term reliability.

N/A

0.1

Overshoot

Maximum voltage allowedb

N/A

100

Parameter

Description

Min

Max

Unit

Rise Time

Time from 10% to 90% mark

0.1

1001

1. Good design practices achieve voltage ramps to within the regulation bands in approximately 20 ms or less.

Monotonicity

Voltage dip allowed in ramp

N/A

Slope

Ramp rate at any time between 10% to

90%

7.6

33600

mV/ms

Operational

Range

Voltage range for normal operating

conditions

0.95

1.05

Ripple

Maximum voltage ripple at a bandwidth

equal to 1 MHz

N/A

mVpeak-peak

Overshoot

SettlingTime

Overshoot time upon ramp2

2. Excessive overshoot can affect long term reliability.

N/A

0.05

Overshoot

Maximum voltage allowedb

N/A

100

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