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Maxim Integrated Semiconductor Electronic Components Datasheet

MAX3815A Datasheet

TMDS Digital Video Equalizer

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19-4822; Rev 0; 7/09
EVAALVUAAILTAIOBNLEKIT
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TMDS Digital Video Equalizer for
HDMI/DVI Cables
General Description
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
temperature range.
Applications
Front-Projector HDMI/DVI Inputs
High-Definition Televisions and Displays
HDMI/DVI-D Cable-Extender Modules and Active
Cable Assemblies
LCD Computer Monitors
HDMI 1.3 Deep Color Systems
Features
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
Required
S 3.3V Power Supply
S Power Dissipation of 0.6W (typ)
S 7mm x 7mm, 48-Pin TQFP Lead-Free Package
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX3815ACCM+
0NC to +70NC
48 TQFP-EP*
+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
VIDEO SOURCE
UP TO 35m OF HDMI
OR
DVI CABLE
MAX3815A
EQUALIZER
MAX3816A
DDC EXTENDER
STANDARD LENGTH
DVI-D OR HDMI CABLE
HDTV
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.


Maxim Integrated Semiconductor Electronic Components Datasheet

MAX3815A Datasheet

TMDS Digital Video Equalizer

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TMDS Digital Video Equalizer for
HDMI/DVI Cables
ABSOLUTE MAXIMUM RATINGS
Supply Voltage Range, VCC.................................-0.5V to +4.0V
Voltage Range at Output CML Pins.....................-0.5V to +4.0V
Voltage Range at Input CML Pins, RES, VCC_T,
and GND_T............................................. -0.5V to (VCC + 0.7V)
Voltage Between Input CML Complementary Pair............ ±3.3V
Voltage Between Output CML Complementary Pair......... ±1.4V
Continuous Power Dissipation (TA = +70°C)
48-Pin TQFP (derate 36.2mW/°C above +70°C).........2896mW
Operating Junction Temperature Range.......... -55°C to +150°C
Storage Temperature Range............................ -55°C to +150°C
Die Attach Temperature...................................................+400°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VCC = +3.0V to +3.5V, TA = 0°C to +70°C. Typical Values are at VCC = +3.3V, external terminations = 50Ω ±1%, MAX3815A in
automatic equalization mode (EQCONTROL = GND), TMDS rate = 250Mbps to 2.25Gbps, TA = +25°C, unless otherwise noted.)
PARAMETER
Power-Supply Current
Supply-Noise Tolerance
EQUALIZER PERFORMANCE
SYMBOL
ICC
CONDITIONS
Clock present (CLKLOS = HIGH)
Clock and data absent (CLKLOS = LOW)
DC to 500kHz
MIN TYP MAX UNITS
210 270
12
mA
200 mVP-P
Residual Output Jitter (Cables
Only) 0.25Gbps to 1.65Gbps
(Notes 1, 2, and 3)
1dB skin-effect loss at 825MHz
24dB skin-effect loss at 825MHz
0.05
0.13 0.21
UI
Residual Output Jitter (Cables
Only) 1.65Gbps to 2.25Gbps
(Notes 1, 2, and 3)
CID Tolerance
CONTROL AND STATUS
CLKLOS Assert Level
CML INPUTS (CABLE SIDE)
Differential Input-Voltage Swing
Common-Mode Input Voltage
Input Resistance
CML OUTPUTS (ASIC SIDE)
Differential Output-Voltage Swing
Output-Voltage High
Output-Voltage Low
Output Voltage During Clock
Absence (CLKLOS = LOW)
VID
VCM
RIN
VOD
1dB skin-effect loss at 825MHz
24dB skin-effect loss at 825MHz
0.1
0.14 0.28
UI
20 Bits
Differential peak-to-peak at EQ input
with max 225MHz clock (see the Typical
Operating Characteristics for more
information)
50 mVP-P
At cable input
Single-ended
800
VCC -
0.4
45
1000
50
1200
VCC +
0.1
55
mVP-P
V
W
50W load, each side OUTLEVEL = HIGH
to VCC
OUTLEVEL = LOW
With back termination as shown in Figure 4,
OUTLEVEL = OPEN
Single-ended, OUTLEVEL = HIGH
Single-ended, OUTLEVEL = HIGH
Single-ended
800
VCC -
600
VCC -
10
1000
500
910
VCC
1200
mVP-P
VCC -
400
VCC +
10
mV
mV
mV
2   _______________________________________________________________________________________


Part Number MAX3815A
Description TMDS Digital Video Equalizer
Maker Maxim Integrated Products
Total Page 11 Pages
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