IC ADAPTIVE CBL EQUALIZER 16-LLP

LMH0044SQE/NOPB

Manufacturer Part NumberLMH0044SQE/NOPB
DescriptionIC ADAPTIVE CBL EQUALIZER 16-LLP
ManufacturerNational Semiconductor
LMH0044SQE/NOPB datasheet
 


Specifications of LMH0044SQE/NOPB

ApplicationsData TransportInterfaceSerial
Voltage - Supply3.135 V ~ 3.465 VPackage / Case16-LLP
Mounting TypeSurface MountOperating Temperature (min)0C
Operating Temperature ClassificationCommercialOperating Temperature (max)85C
Package TypeLLP EPRad HardenedNo
For Use WithSD044EVK - BOARD EVALUATION LMH0044Lead Free Status / RoHS StatusLead free / RoHS Compliant
Other namesLMH0044SQE  
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SMPTE 292M / 259M Adaptive Cable Equalizer
General Description
The LMH0044 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 LMH0044 implements DC restoration to correctly handle
pathological data conditions (DC restoration may be by-
passed for low data rate applications). The equalizer may be
driven in either a single ended or differential configuration.
Additional features include separate carrier detect and output
mute pins which may be tied together to mute the output when
no signal is present. A programmable mute reference is pro-
vided to mute the output at a selectable level of signal degra-
dation.
Typical Application
© 2009 National Semiconductor Corporation
LMH0044
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 and output mute with a programmable
threshold
Single-ended or differential input
50Ω differential outputs
Single 3.3V supply operation
208 mW typical power consumption with 3.3V supply
Replaces the GS1574 and GS1574A
Applications
SMPTE 292M, SMPTE 344M, and SMPTE 259M serial
digital interfaces
Serial digital data equalization and reception
Data recovery equalization
201770
July 15, 2009
20177001
www.national.com

LMH0044SQE/NOPB Summary of contents

  • Page 1

    ... A programmable mute reference is pro- vided to mute the output at a selectable level of signal degra- dation. Typical Application © 2009 National Semiconductor Corporation LMH0044 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 LLP JA  θ 16-pin LLP 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 The exposed die attach pad is a negative electrical terminal for this device. It should be connected to the negative power supply voltage. Pin Descriptions Pin # Name Description 1 V 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

    Application Information PCB LAYOUT RECOMMENDATIONS Please refer to the following Application Note on National's website: AN-1372, “LMH0034 PCB Layout Techniques.” The PCB layout techniques in the application note apply to the LMH0044 as well. REPLACING THE GENNUM GS1574A The LMH0044 ...

  • Page 7

    Physical Dimensions inches (millimeters) unless otherwise noted 16-Pin LLP Order Number LMH0044SQ NS Package Number SQB16A 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 ...