Switch multiplexes outputs to alternative monitors

Fairchild Semiconductor has expanded its analogue switch portfolio with a new quad SPDT analogue video switch.

Fairchild Semiconductor has expanded its analogue switch portfolio with a new quad SPDT analogue video switch.

When designed onto a graphics card, the FSAV330 routes analogue RGB and composite NTSC video signals between an alternative PC monitor and TV.

"Fairchild's FSAV330 allows designers to easily add the capability of an alternative video display", says Seth Prentice, Fairchild's analogue switch product engineer.

"Usually, a second, expensive graphics chip is required to drive video signals to an alternate video output.

That's because the second monitor or TV causes excessive loading of the graphic chip's output, resulting in ghosting and colour fading".

Instead, the FSAV330 offloads the graphics chip's outputs, maintaining matched 75ohm impedance and multiplexes RGB and composite video signals between a monitor and TV.

Placed in tristate, the FSAV330 also provides load isolation while both monitor and TV connections remain open.

The FSAV330 features low differential phase of 0.1 degree, 180MHz bandwidth, -60dB off isolation, -58dB crosstalk, differential gain of 0.64% and low 3ohm on-resistance.

Fairchild's FSAV330 quad SPDT wide bandwidth video switch is available in 16-lead TSSOP, SOIC or QSOP packages.

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