Active Filter Triple Low Pass 8-Pin SOIC EP

The MAX7443/MAX7444 are low-cost, triple-channel video reconstruction filters for S-video and CVBS video signals. These devices are ideal for anti-aliasing and DAC smoothing video applications such as set-top boxes, DVD players, hard-disk recorders (HDRs), and personal video recorders. These filters operate from a single +5V supply. They are optimized for NTSC, PAL, and standard-definition digital TV (SDTV) video systems. Each channel consists of a lowpass filter and an adjustable-gain output buffer capable of driving two standard 150O video loads. The output buffers can drive either an AC or a DC load such that the blanking level voltage after the backmatch resistor is less than 1V. The Y and C video inputs are summed to produce the composite video output. The MAX7444 offers high-frequency boost to improve picture sharpness. The MAX7443 has a maximum flat-frequency response. The MAX7443/MAX7444 are available in a tiny 8-pin thin QFN and an 8-pin SO package with exposed pad, and are fully specified over the -40°C to +85°C extended temperature range.

• Triple-Channel Filter and Buffer for CVBS andY/C (S-Video)
• Filter Response Ideal for NTSC, PAL, andInterlaced SDTV Signals
• 41dB (typ) Stopband Attenuation at 27MHz
• -0.3dB (typ) Passband Response
• Low Blanking Level Voltage Allows DC-CoupledOutput
• Each Channel Drives Two 150O Video Loads
• +5V Single-Supply Voltage
• Tiny 8-Pin Thin QFN or 8-Pin SO Packages