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GS9074A Dataheets PDF



Part Number GS9074A
Manufacturers Gennum
Logo Gennum
Description Adaptive Cable Equalizer
Datasheet GS9074A DatasheetGS9074A Datasheet (PDF)

GS9074A HD-LINX® II Adaptive Cable Equalizer Features • SMPTE 259M compliant • Automatic cable equalization • Multi-standard operation from 143Mb/s to 360Mb/s • Supports DVB-ASI at 270Mb/s • Small footprint (4mm x 4mm) • Pb-free and RoHS compliant • Manual bypass (useful for low data rates with slow rise/fall times) • Performance optimized for 270Mb/s • Typical maximum equalized length of Belden 1694A cable: 350m at 270Mb/s • 50Ωdifferential output (with internal 50Ωpull-ups) • Manual output mu.

  GS9074A   GS9074A



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GS9074A HD-LINX® II Adaptive Cable Equalizer Features • SMPTE 259M compliant • Automatic cable equalization • Multi-standard operation from 143Mb/s to 360Mb/s • Supports DVB-ASI at 270Mb/s • Small footprint (4mm x 4mm) • Pb-free and RoHS compliant • Manual bypass (useful for low data rates with slow rise/fall times) • Performance optimized for 270Mb/s • Typical maximum equalized length of Belden 1694A cable: 350m at 270Mb/s • 50Ωdifferential output (with internal 50Ωpull-ups) • Manual output mute or programmable mute based on max cable length adjust • Single 3.3V power supply operation • Operating temperature range: 0°C to +70°C Applications • SMPTE 259M Coaxial Cable Serial Digital Interfaces Description The GS9074A is a second-generation high speed BiCMOS integrated circuit designed to equalize and restore signals received over 75Ωco-axial cable. The GS9074A is designed to support SMPTE 259M, and is optimized for performance at 270Mb/s. The GS9074A features DC restoration to compensate for the DC content of SMPTE pathological test patterns. A voltage programmable mute threshold (MCLADJ) is included to allow muting of the GS9074A output when an approximate selected cable length is reached for SMPTE 259M signals. This feature allows the GS9074A to distinguish between low amplitude SD-SDI signals and noise at the input of the device. The serial digital outputs of the GS9074A may be forced to a mute state by applying a voltage to the MUTE pin. Power consumption is typically 215mW using a 3.3V power supply. The GS9074A is lead-free, and the encapsulation compound does not contain halogenated flame retardant (RoHS compliant). MCLADJ SDI SDI CABLE LENGTH ADJUSTOR CARRIER DETECT MUTE EQUALIZER DC RESTORE OUTPUT CD MUTE BYPASS SDO SDO AGC Figure A: GS9074A Functional Block Diagram GS9074A HD-LINX® II Adaptive Cable Equalizer Data Sheet 34166 - 4 November 2009 www.gennum.com 1 of 17 Proprietary & Confidential Revision History Version ECR 4 153754 3 139635 2 138357 1 137888 0 136165 A 135927 PCN – 38695 37278 – – – Date Changes and/or Modifications November 2009 Updated to latest Gennum template. March 2006 Corrected pad standoff height and tolerances for pad width and package dimension. Corrected pad shape. November 2005 Converted to Data Sheet. September 2005 Corrected process to BiCMOS. March 2005 Converted to Preliminary Data Sheet. Updated typical application circuit. Updated Input/Output circuits. Updated AC and DC electrical characteristics. Updated description of MUTE and CD functionality. Corrected minor typing errors. Updated center pad dimensions on PCB footprint. February 2005 New document. Contents Features ................................................................................................................................................................. 1 Applications ......................................................................................................................................................... 1 Description ........................................................................................................................................................... 1 Revision History .................................................................................................................................................2 1. Pin Out...............................................................................................................................................................3 1.1 GS9074A Pin Assignment ..............................................................................................................3 1.2 GS9074A Pin Descriptions .............................................................................................................3 2. Electrical Characteristics ............................................................................................................................5 2.1 Absolute Maximum Ratings ..........................................................................................................5 2.2 DC Electrical Characteristics ........................................................................................................5 2.3 AC Electrical Characteristics ........................................................................................................6 3. Solder Reflow Profiles..................................................................................................................................8 4. Test Circuit.......................................................................................................................................................9 5. Input / Output Circuits ............................................................................................................................. 10 6. Detailed Description.......................................................................................................................


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