General Description

The MAX7428/MAX7430/MAX7432A filters are low-cost, high-performance replacements for standard discrete filter and buffer solutions. The MAX7428/MAX7430/MAX7432A are ideal for anti-aliasing and DAC smoothing video applications, when analog video is reconstructed from a digital data stream. These devices require a single +5V supply and the filters have a cutoff frequency optimized for NTSC, PAL, and standard definition digital TV (SDTV) video signals. The MAX7428/MAX7430/MAX7432A feature Maxim’s single-pin bus (MSPB?) interface to digitally control channel selection (IN_A or IN_B), adjust high-frequency boost, bypass the filter, configure luma vs. chroma operation, and control the output disable. The MAX7428 single-channel filter is ideal for composite (CVBS) video signals. The MAX7430 dual filter is optimized for S-Video (Y/C) applications.

特性 Features

? Ideal for CVBS, Y/C (S-Video), and RGB (Y Pb Pr) Outputs for NTSC, PAL, and SDTV

? 6th-Order Lowpass Filter

? Drives Two 150Ω Video Loads

? Four Levels of Passband High-Frequency Boost Control

? Input 2 to 1 Multiplexer

? Output Disable

? Filter Bypassing

? +5V Single-Supply Voltage

? Tiny 8-Pin SOT23 Package (MAX7428), 10-Pin μMAX Package (MAX7430), and 14-Pin TSSOP Package (MAX7432A)

Applications

??? Set-Top Boxes

??? DVD Players

??? Hard-Disk Recorders

??? Camcorders