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Fairchild IC features HD, PS and SD filters

Posted: 02 Sep 2004 ?? ?Print Version ?Bookmark and Share

Keywords:fairchild semiconductor? fms6407? video filter/driver?

Fairchild Semiconductor released what is touted to be the only video filter/driver offering the combined functionality of high definition (HD), progressive scan (PS) and standard definition (SD) filtersall in one chip.

The newly-released FMS6407 features a triple 6th order filter with selectable 30MHz, 15MHz or 8MHz cutoff frequencies, making the device flexible enough to be used in a broad range of video applications. And for added capability, the filters can be bypassed, allowing the output amplifiers to accommodate higher bandwidth (80MHz) PC applications.

According to the company, the FMS6407 is an ideal solution for removing high frequency noise prior to digitizing the signal (antialiasing) or for removing artifacts introduced during D/A conversion in the encoder (reconstruction filtering) in LCD TV, STB, DVD and HD/Blu-ray applications. "With the FMS6407, we now offer on-chip clamp select to handle the various video formats, a solution for PS (480p) and PC applications, along with SD (NTSC/PAL/SECAM) and HD (1080i/720p) products, all in the same device," said Ben Takada, Fairchild's business development director for video products.

The FMS6407 offers 2 to1 multiplexers to accommodate multiple video formats (YPbPr/RGB or YPbPr/YC-CV) and will automatically adjust sync tip clamp voltages to the appropriate levels, depending on the video format selected. All three outputs on the device are driven by amplifiers with selectable gains of 0dB or 6dB, which can drive 1Vpp or 2Vpp signals into ac- or dc-coupled terminated video loads. The ac-coupled inputs include dc restore and bias circuitry. Other features include SD/PS/HD stopband attenuations of 56-, 48- and 40dB, 0.26 percent differential gain, and a 0.11 degree differential phase.

Priced at $1.52 in 1,000-unit quantities, the FMS6407 is available in a 20-pin TSSOP package. A demo/evaluation board (FMS6407DEMO) is available to illustrate the full performance of the video filter/driver.





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