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MAX3815A
TMDS Digital Video Equalizer for HDMI/DVI Cables

Automatic Cable Equalizer for HDMI v1.3 "Deep Color" TMDS Video Signals Up to 2.25Gbps


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Status
Active: In Production.

Description
FULL DATA SHEET (PDF, 1.5MB)
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The MAX3815A cable equalizer automatically provides compensation for DVI™ and HDMI™ v1.3 cables. It extends the usable cable distance up to 40 meters (1.65Gbps) and 35 meters (2.25Gbps). The MAX3815A is designed to equalize signals encoded in the transition-minimized differential signaling (TMDS®) format.

The MAX3815A features four CML-differential inputs and outputs (three data and one clock). It provides a loss-of-signal (LOS) output that indicates loss-of-clock signal. The outputs include a disable function. Upon LOS, the chip is powered down. For direct chip-to-chip communication, the output drivers can be switched to one-half the DVI output specification to conserve power and reduce EMI. The output drive current can also be increased to allow the use of back termination resistors for improved signal integrity. Equalization can be automatic or set to manual control for specific in-cable applications.

The MAX3815A is available in a 7mm x 7mm, 48-pin TQFP-EP package and operates over a 0°C to +70°C temperature range.

An evaluation kit is available:  MAX3815AEVKIT  

Key Features   Applications/Uses
  • Guaranteed Performance to 2.25Gbps (HDMI 1.3), Improved Jitter Performance at Low Source Amplitude, and Enhanced Output Driver
  • Extends 2.25Gbps TMDS Interface Length
    • 0 to 35 Meters Over HDMI Cable, 24 AWG
    • 0 to 22 Meters Over HDMI Cable, 28 AWG
  • Extends 1.65Gbps TMDS Interface Length
    • 0 to 40 Meters Over HDMI Cable, 24 AWG
    • 0 to 28 Meters Over HDMI Cable, 28 AWG
  • Compatible with HDTV Resolutions 720p, 1080i, 1080p, and 1080p with 36-Bit Color
  • Compatible with Computer Resolutions VGA, SVGA, XGA, SXGA, UXGA, and WUXGA
  • Fully Automatic Equalization, No System Control Required
  • 3.3V Power Supply
  • Power Dissipation of 0.6W (typ)
  • 7mm x 7mm, 48-Pin TQFP Lead-Free Package

 
  • Front-Projector HDMI/DVI Inputs
  • HDMI 1.3 Deep Color Systems
  • HDMI/DVI-D Cable-Extender Modules and Active Cable Assemblies
  • High-Definition Televisions and Displays
  • LCD Computer Monitors

Diagram
MAX3815A: Typical Operating Circuit
Typical Operating Circuit

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    Document Ref.: 19-4822; Rev 0; 2009-08-18
    This page last modified: 2009-10-15


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