May 2018

www.fairchildsemi.com

© 2011 Fairchild Semiconductor Corporation

FSA644 • Rev.

2

Features

Switch Type

SPDT (10x)

Signal Types

MIPI, D-PHY

1.65 to 4.5 V

Input Signals

6

Ω Typical HS MIPI

8

Ω Typical LP MIPI

0.6

Ω Typical HS & LP MIPI

0.3

Ω Typical

0.5 µA Maximum

32 µA Maximum

-40 dB Typical

-25 dB Typical

Bandwidth

1100 MHz Minimum

Channel-to-Channel Skew

6 ps Typical

5.2 pF

Operating Temperature

-40 to +85°C

Package

36-Ball WLCSP

FSA644UCX Top Mark

M7

Ordering Information

FSA644UCX

FSA644BUCX Top Mark

KM

Ordering Information

FSA644BUCX

Description

The FSA644 is a four-data-lane, MIPI, D-PHY switch. This

single-pole, double-throw (SPDT) switch is optimized for

switching between two high-speed or low-power MIPI

sources. The FSA644 is designed for the MIPI specification

and allows connection to a CSI or DSI module.

Applications

Related Resources

Typical Application

Figure 1. Mobile Phone Example

FSA644

4-Data Lane

MIPI Switch

MIPI

Module #1

CSI / DSI

MIPI

Module #2

CSI / DSI

Processor

CLK

Data [1:4]

CLK

Data [1:4]

CLK

Data [1:4]