Multiplexer makes the most of video bandwidth

A triple-channel multiplexer has been designed with a slew rate that enables exceptional bandwidth even at the high levels typically associated with video signals.

A triple-channel multiplexer for video switching from Intersil has been designed with the industry's highest bandwidth and a slew rate that enables exceptional bandwidth even at the high levels typically associated with video signals.

The device easily drives video loads, and is ideal for driving double or back-terminated loads.

The ISL59448 is a triple-channel 2:1 multiplexer with an integrated gain-of-2 buffer that delivers 1600V/us slew rate and 500MHz bandwidth.

The device is designed to meet the high-resolution requirements of monitors, projectors and KVM (keyboard, video, mouse) peripherals.

It extends Intersil's industry-leading family of high-performance video multiplexers, which includes the ISL59445 with its 1GHz bandwidth capability.

The ISL59448 allows designers to switch between two different input signals, each comprised of three channels, such as RGB (red, green, blue) or YPbPr (the colour space used in video electronics).

The integrated buffer with a fixed gain of two is ideal for driving double terminated video loads.

The chip also features a three-state output (HIZ), so users can connect the outputs of multiple devices together to form large matrices.

Also, a power-down mode that reduces power to just 14mW is incorporated in the ISL59448, so unneeded circuitry can be turned off in power-sensitive applications.

Other key features of the device are a 12ns switching time, a differential gain/phase error of 0.05%/0.05 degrees, and a supply current of 16mA/channel.

Target applications for the ISL59448 include high-resolution monitors, projectors, and the KVM market.

The device is available now in 24-lead QSOP packages.

Back to top