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General Description

The MAX7469/MAX7470 triple-channel, anti-aliasing filters and buffers are ideal for high-definition (HD) and standard-definition (SD) television (TV) applications. Compatible with 1080i, 720p, 480p, and 480i scanning system standards and computer format signals, the MAX7469/MAX7470 support component video (Y Pb Pr, GsBR, and RGBHV), as well as composite (CVBS) and S-video (Y/C).

The MAX7469/MAX7470 limit the input bandwidth for anti-aliasing and out-of-band noise reduction prior to digital conversion by an ADC or video decoder. The MAX7469/MAX7470 frequency response can be continuously varied in 256 linear steps through an I2C interface from below SD resolution to beyond HD resolution.

特性 Features

♦ Continuously Variable Anti-Aliasing Filter

   5MHz to 34MHz in 256 Steps

♦ Supports All Standard Video and Computer Input

   Formats

   480i, 480p, 720p, 1080i

   QVGA, VGA, SVGA, XGA, SXGA, UXGA

   Y Pb Pr, GsBR, RGBHV, Y/C, CVBS

♦ Accepts Any Input Sync Format

   Sync on Y, Sync on G, External Sync (Positive

   or Negative)

   Sync on All Channels

♦ Buffered Outputs Drive Standard 150Ω Video

   Load

   0dB (MAX7469)

   +6dB (MAX7470)

♦ DC- or AC-Coupled Outputs

♦ Single +5V Analog and +3.3V Digital Supplies

♦ 5mW Power-Down Mode

♦ 20-Pin TQFN Lead-Free Package

Applications

   HDTV (LCD, PDP, DLP, CRT)

   Set-Top Boxes

   Personal Video Recorders

   Home Theaters