IC ADAPT CBL EQUALIZER 16-SOIC

LMH0034MAX/NOPB

Manufacturer Part NumberLMH0034MAX/NOPB
DescriptionIC ADAPT CBL EQUALIZER 16-SOIC
ManufacturerNational Semiconductor
LMH0034MAX/NOPB datasheet
 


Specifications of LMH0034MAX/NOPB

Applications*Interface*
Voltage - Supply*Package / Case16-SOIC (3.9mm Width)
Mounting TypeSurface MountFor Use WithSD034EVK - BOARD EVALUATION LMH0034
Lead Free Status / RoHS StatusLead free / RoHS CompliantOther namesLMH0034MAX
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SMPTE 292M / 259M Adaptive Cable Equalizer
General Description
The LMH0034 SMPTE 292M / 259M adaptive cable equalizer
is a monolithic integrated circuit for equalizing data transmit-
ted over cable (or any media with similar dispersive loss
characteristics). The equalizer operates over a wide range of
data rates from 125 Mbps to 1.485 Gbps and supports
SMPTE 292M, SMPTE 344M and SMPTE 259M.
The LMH0034 implements DC restoration to correctly handle
pathological data conditions. DC restoration can be bypassed
for low data rate applications. The equalizer is flexible in al-
lowing either single-ended or differential input drive.
Additional features include a combined carrier detect and out-
put mute pin which mutes the output when no signal is
present. A programmable mute reference is used to mute the
output at a selectable level of signal degradation. A cable
length indicator is provided to determine the amount of cable
being equalized.
Typical Application
© 2009 National Semiconductor Corporation
LMH0034
Features
SMPTE 292M, SMPTE 344M and SMPTE 259M
compliant
Supports DVB-ASI at 270 Mbps
Data rates: 125 Mbps to 1.485 Gbps
Equalizes up to 200 meters of Belden 1694A at 1.485
Gbps or up to 400 meters of Belden 1694A at 270 Mbps
Manual bypass, cable length indicator, and output mute
with a programmable threshold
Single-ended or differential input
50Ω differential outputs
Single 3.3V supply operation
208mW typical power consumption with 3.3V supply
Replaces the GS1524 and GS1524A
Applications
SMPTE 292M, SMPTE 344M, and SMPTE 259M serial
digital interfaces
Serial digital data equalization and reception
Data recovery equalization
201734
July 15, 2009
20173401
www.national.com

LMH0034MAX/NOPB Summary of contents

  • Page 1

    ... A programmable mute reference is used to mute the output at a selectable level of signal degradation. A cable length indicator is provided to determine the amount of cable being equalized. Typical Application © 2009 National Semiconductor Corporation LMH0034 Features ■ SMPTE 292M, SMPTE 344M and SMPTE 259M compliant ■ ...

  • Page 2

    Absolute Maximum Ratings Supply Voltage Input Voltage (all inputs) Storage Temperature Range Junction Temperature Lead Temperature (Soldering 4 Sec) Package Thermal Resistance  θ 16-pin SOIC JA  θ 16-pin SOIC JC ESD Rating (HBM) ESD Rating (MM) DC Electrical Characteristics Over ...

  • Page 3

    AC Electrical Characteristics Over Supply Voltage and Operating Temperature ranges, unless otherwise specified (Note 3). Symbol Parameter BR Minimum Input Data Rate MIN BR Maximum Input Data Rate MAX Jitter for various cable lengths (with equalizer pathological Output ...

  • Page 4

    Connection Diagram Pin Descriptions Pin # Name Description 1 CLI Cable length indicator. Provides a voltage inversely proportional to the cable length being equalized Positive power supply (+3.3V Negative power supply (ground SDI ...

  • Page 5

    Block Diagram Device Operation BLOCK DESCRIPTION The Equalizer Filter block is a multi-stage adaptive filter. If Bypass is high, the equalizer filter is disabled. The DC Restoration / Level Control block receives the dif- ferential signals from the equalizer filter ...

  • Page 6

    OUTPUT INTERFACING The SDO and SDO outputs are internally loaded with 50Ω. They produce a 750 mV differential output P-P 375 mV single-ended output. P-P Application Information PCB LAYOUT RECOMMENDATIONS Please refer to the following Application Note on ...

  • Page 7

    Physical Dimensions inches (millimeters) unless otherwise noted 16-Pin SOIC Order Number LMH0034MA NS Package Number M16A 7 www.national.com ...

  • Page 8

    ... For more National Semiconductor product information and proven design tools, visit the following Web sites at: Products Amplifiers www.national.com/amplifiers Audio www.national.com/audio Clock and Timing www.national.com/timing Data Converters www.national.com/adc Interface www.national.com/interface LVDS www.national.com/lvds Power Management www.national.com/power Switching Regulators www.national.com/switchers LDOs www.national.com/ldo LED Lighting www ...