FSA3000 datasheet(10/14 Pages) ONSEMI

10 / 14 page

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FSA3000 • Rev. 1.10

Insertion Loss

One of the key factors for the FSA3000 in mobile digital

video applications is the small amount of insertion loss

in the received signal as it passes through the switch.

This results in minimal degradation of the received eye.

One of the ways to measure the quality of the high data

rate channels is using balanced ports and 4-port

differential S-parameter analysis, particularly SDD21.

Bandwidth is measured using the S-parameter SDD21

methodology. Figure 15 shows the bandwidth (GHz) for

the MHL path and Figure 16 shows the bandwidth curve

for the USB path.

Figure 15. MHL (MDV) Path SDD21 Insertion

Loss Curve

Figure 16. USB Path SDD21 Insertion Loss Curve

Typical Application

Figure 17 shows a typical mobile application using the

FSA3000 for MHL switching. The FSA3157 is used for

OTG dual-role device implementations where the CBUS

of MHL and the ID pin for USB needs to be switched.

The 3M resistor for MHL_SEL is optional to ensure that

on power up the USB switch path is selected as default.

HDMI to MHL

Bridge

Baseband or

Application

Processor

USB_D+

USB_D-

CBUS

MHL+

MHL-

VBUS

D+

D-

GND

MicroUSB

Connector

GND

FSA3000

VBAT

MHL_SEL

D+

D-

Sel

/OE

Vcc

MHL+

MHL-

USB+

USB-

To USB Battery Charging Block

Enable

ID_USB

FSA3157

Figure 17. Typical Mobile MHL Application

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