MAX7440/MAX7441/MAX7442 six-channel integrated video reconstruction filters
The MAX7440, MAX7441 and MAX7442 are six‑channel integrated video reconstruction filters that replace thirty or more discrete components. They operate from a single +5 V supply and accept DC‑coupled inputs from DACs, providing either AC‑ or DC‑coupled outputs. The filters are optimized for PAL, NTSC and SDTV video bandwidths and offer optional high‑frequency boost on selected channels.
Typical applications include set‑top boxes, DVD players, hard‑disk recorders and other A/V devices with SCART interfaces. The devices require external buffering to drive standard 150 Ω video loads, and Maxim provides layout recommendations and an evaluation kit for optimal performance.
| Supply Voltage Range | 4.75 V to 5.25 V |
|---|---|
| Supply Current (no load) | 57 mA typ |
| Stopband Attenuation at 27 MHz | 45 dB |
| Input Resistance | 200 kΩ |
| Input Capacitance | 20 pF |
| Package Type | 14‑Pin SO |
The devices operate from a single +5 V supply with a recommended voltage range of 4.75 V to 5.25 V.
Each part provides six independent low‑pass filter channels.