MAX4079

19-3780; Rev 1; 3/09 KIT ATION EVALU E L B A AVAIL Complete Audio/Video Backend Solution General Description Features ♦ Integrated Video Reconstruction Filters—6MHz Lowpass Filter Supports NTSC, PAL, or DVB per ITU-601 ♦ Integrated Video and Audio Amplifiers ♦ Integrated Video Input Clamps and Biasing ♦ Mono Audio and CVBS Output to Drive External Modulator ♦ +5V (Video) and +9V to +12V (Audio) SingleSupply Operation ♦ Differential/Single-Ended Audio Inputs ♦ 24-Pin TSSOP Package MAX4079 www.datasheet4u.com The MAX4079 filters and buffers video (NTSC/PAL/DVB) and stereo audio signals from the MPEG decoder of a cable/satellite receiver, VCR/DVD player, or a TV to an external load. The MAX4079 has luma-chroma (Y-C) and composite (CVBS) video inputs with one Y-C and two CVBS outputs. All video inputs are AC-coupled with internal DC biasing on the chroma input and active clamps for the luma and composite. The MAX4079 video reconstruction filters have a 6MHz cutoff frequency and 50dB attenuation at 27MHz. The filters are matched with flat group delay for standarddefinition video. The video gain is fixed at +6dB to drive a 75Ω back-terminated load (150Ω) to unity gain. The video outputs can be either DC- or AC-coupled and are powered by a single +5V supply. The MAX4079 audio amplifiers have differential inputs for optimum performance, but can be used with singleended sources with external biasing. The audio channels have a fixed gain of +6dB and deliver 2.6VRMS output with a d...