19-4822; Rev 0; 7/09
TMDS Digital Video Equalizer for
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 communi-
cation, 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
Front-Projector HDMI/DVI Inputs
High-Definition Televisions and Displays
HDMI/DVI-D Cable-Extender Modules and Active
LCD Computer Monitors
HDMI 1.3 Deep Color Systems
S Guaranteed Performance to 2.25Gbps (HDMI 1.3),
Improved Jitter Performance at Low Source
Amplitude, and Enhanced Output Driver
S Extends 2.25Gbps TMDS Interface Length
0 to 35 Meters Over HDMI Cable, 24 AWG
0 to 22 Meters Over HDMI Cable, 28 AWG
S Extends 1.65Gbps TMDS Interface Length
0 to 40 Meters Over HDMI Cable, 24 AWG
0 to 28 Meters Over HDMI Cable, 28 AWG
S Compatible with HDTV Resolutions 720p, 1080i,
1080p, and 1080p with 36-Bit Color
S Compatible with Computer Resolutions VGA,
SVGA, XGA, SXGA, UXGA, and WUXGA
S Fully Automatic Equalization, No System Control
S 3.3V Power Supply
S Power Dissipation of 0.6W (typ)
S 7mm x 7mm, 48-Pin TQFP Lead-Free Package
0NC to +70NC
+Denotes a lead(Pb)-free/RoHS compliant package.
*EP = Exposed pad.
Pin Configuration appears at end of data sheet.
Typical Operating Circuits
HDMI OR DVI EXTENDER BOX
UP TO 35m OF HDMI
DVI-D OR HDMI CABLE
Typical Operating Circuits continued at end of data sheet.
DVI is a trademark of Digital Display Working Group.
HDMI is a trademark of HDMI Licensing, LLC.
TMDS is a registered trademark of Silicon Image Inc.
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.