A highly integrated, triple video driver that is
selectable for High Definition (HD) or Standard Definition (SD) signal filtering has been launched by Fairchild Semiconductor.

The FMS6418A is used to remove high frequency noise prior to digitising the signal (anti-aliasing), or to remove artefacts introduced during digital to analogue conversion in the encoder (reconstruction filtering) for either RGB or YUV signals.

The product offers improved performance, flexibility, and lower parts count for advanced video applications, including HDTV monitors, cable and satellite set top boxes, DVD players, Personal Video Recorders (PVRs), Video on Demand (VoD), and audio/video receivers.

The device has triple 6th order filters with selectable 30 MHz (HD) or 8 MHz (SD) frequencies. It also offers -38 dB of stopband rejection at 74.25 MHz for HD and -55 dB at 27 MHz for SD applications. The FMS6418A provides performance exceeding that of competitive integrated devices, it is claimed, while offering cost and design advantages over discrete solutions that require multiple components.

The FMS6418A combines a 2:1 multiplexer on each filter channel, with filtering and output drive amplification on all three channels, to provide a complete video solution. All channels provide 6 dB gain, accept 1V ground referenced inputs, and drive AC coupled loads.