MAX4079 Datasheet | Maxim Integrated

19-3780; Rev 1; 3/09 KIT ATION EVALU E L B A AVAIL plete 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) Single Supply Operation - Differential/Single-Ended Audio Inputs - 24-Pin TSSOP Package .. 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 posite (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 posite. The MAX4079 video reconstruction filters have a 6MHz cutoff frequency and 50d B attenuation at 27MHz. The filters are matched with flat group delay for standarddefinition video. The video gain is fixed at +6d B 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 +6d B and deliver 2.6VRMS output with a differential input of ±1.85V. The audio amplifiers operate from a +9V to +12V single supply and feature an internal bias generator. An on-chip mixer also provides a mono output, with +3d B gain, derived from the left and right audio channels. The MAX4079 is available in 24-pin TSSOP package, and is fully specified over the 0°C to +70°C mercial temperature range. The MAX4079 Evaluation Kit is available to help speed designs. Ordering Information PART MAX4079CUG+ TEMP RANGE 0°C to +70°C...