Sunnyvale, Calif. - Targeting digital set-top boxes and DVD+R/W applications, Maxim Integrated Products' MAX4399 triple Scart audio/video switch puts 150-ohm output buffers on-chip. Scart is the means by which A/V equipment like TVs, set-top boxes, VCRs, DVDs and game consoles is connected in Europe.
The MAX4399 provides audio and video routing from the digital encoder to the TV, VCR and AUX Scart connectors. The device mixes an auxiliary audio tone into the TV audio channel and the stereo audio signal into a mono audio signal. The device directly drives an external RF modulator with a composite video with blanking and sound signal created by an on-chip luma/chroma (Y/C) mixer.
The A/V chip operates with standard 5-V and 12-V single supplies and supports slow and fast switching. All video and audio inputs are ac-coupled. All video outputs, including the RF modulator, drive standard 150-ohm loads. RGB outputs feature 6-dB plus/minus 1-dB programmable gain. All other video outputs have a 6-dB fixed gain. The VCR and AUX audio output gains are programmable for -6 dB, 0 dB and +6 dB. The MAX4399 is available in a space-saving 68-pin QFN package and is specified over the commercial range (-0 degrees C to +70 degrees C). Prices start at $1.95 in 100,000s.
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