IC DRVR/EQUALIZER CABLE 32-TQFP

MAX3814CHJ+

Manufacturer Part NumberMAX3814CHJ+
DescriptionIC DRVR/EQUALIZER CABLE 32-TQFP
ManufacturerMaxim Integrated Products
TypeDriver
MAX3814CHJ+ datasheet
 


Specifications of MAX3814CHJ+

Number Of Drivers/receivers4/0Voltage - Supply3 V ~ 3.6 V
Mounting TypeSurface MountPackage / Case32-TQFP, 32-VQFP
Lead Free Status / RoHS StatusLead free / RoHS CompliantProtocol-
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19-0813; Rev 2; 12/10
General Description
The MAX3814 TMDS™ EQ/driver IC compensates for
FR-4 and cable losses up to the DVI™/HDMI
connector and provides a fully compliant DVI/HDMI
TMDS output. The device can also be used in DVI/HDMI
cable applications to extend reach and improve jitter
margin of cable channels at the receive-side connector.
The on-chip TMDS drivers operate at a standard cur-
rent level for implementing a typical DVI/HDMI non-
back-terminated transmitter, as well as a 50% higher
current mode for using a 200Ω back termination resis-
tor (nonmatching) to achieve a 10dB return loss.
Typical DVI/HDMI output drivers contribute to reflection
problems between the connector and a typical high-
impedance (open) DVI/HDMI Tx output. The selectable
output current (LEVEL pin) gives the option of partial
back termination (e.g., differentially connected 200Ω) to
mitigate the reflection problem effectively while keeping
common-mode offset to a minimum.
The 4-channel implementation treats all channels identi-
cally. To allow board layout flexibility for DVI and HDMI
connectors, which have different channel order, the
clock and data channels can be arbitrarily assigned.
The MAX3814 operates from a 3.3V power supply,
standard for DVI/HDMI applications, and is packaged
in a 5mm x 5mm x 0.1mm, 32-pin TQFP package.
Laptop PC TMDS Equalizer and Driver
Docking Station TMDS Equalizer and Driver
Cable TMDS Equalizer
TERMINATED TO V
CC
IND+/-
INC+/-
INB+/-
INA+/-
EQUALIZER
MAX3814
TMDS is a trademark of Silicon Image, Inc.
DVI is a trademark of Digital Display Working Group.
HDMI is a registered trademark and registered service mark of HDMI Licensing, LCC.
________________________________________________________________ Maxim Integrated Products
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.
DVI/HDMI TMDS FR-4 and
Cable Equalizer/Driver
♦ Equalizes FR-4 Board Microstrip and Cable HF
®
transmit
Losses Up to 15dB at 825MHz for Operation at
0.25Gbps to 1.65Gbps
♦ Compatible with HDMI 1.3
♦ Less Than 0.2UI
0 to 15dB Channel Loss at 825MHz
♦ Input Terminations: 50Ω (Each Side to V
♦ Output of Driver is a Fully DVI/HDMI TMDS-
Compatible Cable Driver
♦ Output Amplitude: 1.05V
♦ Enable Pin to Select Normal Operation or Power-
Down Mode
♦ LEVEL Pin to Select Output Current for Use With
or Without Back Termination
♦ 32-Pin TQFP for Four Channels; Any Channel Can
Be Either a TMDS Data or Clock Signal
♦ V
= 3.3V; Signal Pins Have Absolute Max
CC
Ratings of 5.5V (for Fault Conditions)
PART
Applications
MAX3814CHJ+
+ Denotes a lead(Pb)-free/RoHS-compliant package.
Pin Configuration appears at end of data sheet.
Simplified Functional Diagram
4
4
3
3
LIMITING
2
AMPLIFIER
2
1
1
OUTPUT LEVEL CONTROL
Features
Residual Jitter at 1.65Gbps for
P-P
) ±10%
CC
Differential
P-P
Ordering Information
TEMP RANGE
PIN-PACKAGE
0°C to +70°C
32 TQFP
OUTD+/-
4
OUTC+/-
3
2
OUTB+/-
DRIVER 1
OUTA+/-
ENABLE
LEVEL
1

MAX3814CHJ+ Summary of contents

  • Page 1

    ... TQFP for Four Channels; Any Channel Can Be Either a TMDS Data or Clock Signal ♦ 3.3V; Signal Pins Have Absolute Max CC Ratings of 5.5V (for Fault Conditions) PART Applications MAX3814CHJ+ + Denotes a lead(Pb)-free/RoHS-compliant package. Pin Configuration appears at end of data sheet. Simplified Functional Diagram ...

  • Page 2

    DVI/HDMI TMDS FR-4 and Cable Equalizer/Driver ABSOLUTE MAXIMUM RATINGS Termination-Supply Voltage Range.......................-0.5V to +4.0V Signal Voltage Range on Any One Signal Wire ....-0.5V to +4.0V CML Common-Mode Voltage Range on Any I/O Pair (sustained) .....................................-0.5V to +5.5V CML Common-Mode Voltage ...

  • Page 3

    SPECIFICATION TABLES (continued) (Typical values measured 3.3V ±0.3V 0°C to +70°C; with external terminations = 50Ω ±1% to voltage = 3.3V ±0.7V. Tested at 1.65Gbps. AC parameters guar- A anteed by design and ...

  • Page 4

    DVI/HDMI TMDS FR-4 and Cable Equalizer/Driver SPECIFICATION TABLES (continued) (Typical values measured 3.3V ±0.3V 0°C to +70°C; with external terminations = 50Ω ±1% to voltage = 3.3V ±0.7V. Tested at 1.65Gbps. AC parameters ...

  • Page 5

    T = +25°C, unless otherwise noted. Residual jitter is measured directly from the eye diagram histogram after 5000 hits MAX3814 OUTPUT: 1.65Gbps DATA AFTER 30ft OF TENSOLITE 28 AWG CABLE MAX3814 toc04 100ps/div SINGLE-ENDED/DIFFERENTIAL INPUT ...

  • Page 6

    DVI/HDMI TMDS FR-4 and Cable Equalizer/Driver PIN NAME 1, 8, 17, 24 N.C. No Connection. Not internally connected. 2 INB+ Positive TMDS Input, CML 3 INB- Negative TMDS Input, CML Power Supply. All pins must ...

  • Page 7

    Detailed Description The MAX3814 TMDS equalizer/driver accepts differential CML input data rates from 250Mbps to 1.65Gbps. It con- sists of four differential CML input buffers, four indepen- dent fixed equalizers, four limiting amplifiers, and four differential CML output buffers (Figure ...

  • Page 8

    DVI/HDMI TMDS FR-4 and Cable Equalizer/Driver CML Inputs and Outputs The input buffers and the output drivers are current- mode logic (CML). See Figures 2, 3, and 4. The input buffers consist of a 50Ω load resistor connected to V ...

  • Page 9

    TRANSIENT SUPRESSOR CLAMP LEVEL = LOW ENABLE = HIGH 10mA 5mA Figure 4. Simplified Output Circuit with Back Termination Resistor Output Enable Control The ENABLE pin is an LVTTL input that allows the user to shut off the output-collector currents, ...

  • Page 10

    DVI/HDMI TMDS FR-4 and Cable Equalizer/Driver Laptop PC TMDS Equalizer and Driver As shown at location XX in Figure 6b, the MAX3814 equalizes trace losses and redrives the TMDS outputs at the docking connector. The 200Ω resistor at the out- ...

  • Page 11

    Cable TMDS Equalizer The MAX3814 is useful in providing equalization for cables losses at location ZZ, at the input DVI/HDMI connector of the remote display. It can equalize cable lengths of 15 meters of 26 AWG wire and 12 meters ...

  • Page 12

    DVI/HDMI TMDS FR-4 and Cable Equalizer/Driver DVI-D OR HDMI EXTENDER BOX UP TO 60m DVI-D OR MAX3816 HDMI CABLE DDC EXTENDER MAX3815 EQUALIZER DRIVER/EQUALIZER VIDEO SOURCE DIGITAL BROADCAST DIGITAL CABLE DIGITAL SATELLITE DVD Blu-ray™ DISC HD-DVD Blu-ray is a trademark ...

  • Page 13

    Pin Configuration TOP VIEW OUTA- 26 OUTA MAX3814 LEVEL 29 INA INA ...

  • Page 14

    ... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 14 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2010 Maxim Integrated Products DESCRIPTION = 0° ...