MAX7448

The MAX7448, 4-channel, buffered video reconstruction filter is ideal for anti-aliasing and digital-to-analog converter (DAC)-smoothing video applications or wherever analog video is reconstructed from a digital data stream (such as cable/satellite/terrestrial set-top boxes, DVD players, hard-disk recorders (HDRs), and personal video recorders (PVRs)). This MAX7448 operates from a single +5V supply and has a flat passband out to 5MHz with a stopband attenuation of 43dB at 27MHz. This makes it ideal for use with NTSC, PAL, and standarddefinition digital TV (SDTV) video systems. Each output of MAX7448  is capable of driving two standard 150 video loads.

The MAX7448 processes RGB and asynchronous CVBS video signals. The output video buffers have a fixed gain of +6dB. The channel used for CVBS video has high-frequency boost circuitry, which provides picture sharpness with +1.2dB of gain boost without degradation in the stopband. The output video drivers MAX7448 can be disabled with an external pin.

The MAX7448 is available in a 14-pin TSSOP package with an exposed pad, and is specified over the -40°C to +85°C extended temperature range.