Fairchild ON Semiconductor FSA642 User Manual

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FSA642 — Evaluation Board User Guide

1. Introduction

This user guide is for the FSA642 evaluation board and is intended to complement the FSA642
datasheet. Technical or application-specific questions not addressed in this guide should be
directed to Fairchild’s technical support team. Please contact your Fairchild representative, visit
our website at www.fairchildsemi.com

This evaluation board is used to evaluate the high-speed performance of Fairchild’s differential
3PDT MIPI switch. SMA connectors are used for maintaining signal integrity of input and output
signals. The board is designed to pass differential clock or data signals without the use of on­board loads or terminations. Clock and data trace pairs are designed for 100Ω differential
impedance. For lab evaluation, a standard 50Ω pulse/data generator can supply signals into the
inputs and 50Ω terminated, high-bandwidth oscilloscope sampling heads can be used to
terminate the outputs.

Power Supply
Connectors

, or contact us at [e-mail].

CLKB

D1B

CLK

D2B

D1

D2

CLKA

Control Switches

(SW1, SW2)

D2A

D1A

Figure 1. Evaluation Board with Component Locations Labeled

Configuration of the device is simplified by on-board switches to enable/disable the device and
to control the output select manually. Signal trace layout follows the UMLP package pad layout,
with clock/data inputs at the left and multiplexed outputs at top, right and bottom.

© 2009 Fairchild Semiconductor Corporation 1 FSA642 FEB • Rev. 0.0.1