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MAX7469, MAX7470*
HDTV Continuously Variable Anti-Aliasing Filters

All Video Formats Supported and Optimization of Corner Frequency for Enhanced Video Quality and Noise Reduction

*Future Product
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    Status
    All versions are No Longer Available.

    Description
    FULL DATA SHEET (PDF, 288kB)
    Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail
    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.

    The output buffers of the MAX7469/MAX7470 drive a 2VP-P video signal into a standard 150Ohm load. The inputs are AC-coupled, and the outputs can be either DC- or AC-coupled. The MAX7469 has a gain of 0dB, and the MAX7470 has a gain of +6dB. Both devices are available in a 20-pin TQFN package and are fully specified over the 0°C to +85°C upper-commercial temperature range.

    An evaluation kit is available:  MAX7470EVKIT  

    Key Features   Applications/Uses
    • 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 150Ohm 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

     
  • HDTV (LCD, PDP, DLP, CRT)
  • Home Theaters
  • Personal Video Recorders
  • Set-Top Boxes

    Diagram
    MAX7469, MAX7470: Typical Operating Circuit
    Typical Operating Circuit

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    Document Ref.: 19-0548; Rev 1; 2007-05-18
    This page last modified: 2007-09-04


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