XRD8794AB View Datasheet(PDF) - Exar Corporation

Part Name

Description

Manufacturer

XRD8794AB

XRD8794AB Application Board

Exar Corporation 

XRD8794AB

Unused Top

Sections

Unused Bottom

Section

Figure 1. Unused Patterns On XRD8794AB

(Patterns in Grey Used For EXAR Production Test Only)

The XRD8794AB printed circuit board is a four layer

board with two internal layers dedicated to power and

ground. Top and bottom layers are used for the routing of

circuitry. The internal power planes have a 5 mil

separation that use the inherent board capacitance to aid

power supply bypassing. The board’s finished thickness

is 100 mils. Figures 11 through 16 at the back of this

application note show each layer of the board.

SYSTEM CONFIGURATION - LAB SETUP

The evaluation block diagrams of the XRD8794AB with

typical external test equipment are shown in Figure 4.,

Figure 5., and Figure 8. The following is a more detailed

description of the major on-board and external

components used in these systems.

Application Board Circuitry

The application board support circuitry is shown in

Figure 2.

Rev. 1.00

2

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