3 bandgap analog voltage filter, Pci express analog voltage filter circuit – Intel 41210 User Manual

Page 51

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Intel® 41210 Serial to Parallel PCI Bridge Design Guide

51

Circuit Implementations

Figure 24.

PCI Express Analog Voltage Filter Circuit

Note:

.

Place C as close as possible to package pin.

R must be placed between VCC15 and L.

Route VCCAPE and VSSAPE as differential traces.

VCCAPE and VSSAPE traces must be ground referenced (No VCC15 references).

Max total board trace length = 1.2”.

Min trace space to other nets = 30 mils.

10.1.3

Bandgap Analog Voltage Filter

Figure 25

Shows the Bandgap Analog Voltage Filter.

B2725 -01

R

C

VSSAPE

Intel

fi

41210

Bridge

VCCAPE

L

VCC

Board Trace:

Trace Width > 25 mils

Trace Spacing < 10 mils

Trace Length < 600 mils

Breakout Trace:

Trace Width > 6 mils

Trace Spacing < 6 mils

Trace Length < 600 mils

Board Route

Traces

Breakout

Traces

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