GS2974B HD-LINX III Adaptive Cable Equalizer Features Description SMPTE 424M, SMPTE 292M, 344M and SMPTE 259M The GS2974B is a high-speed BiCMOS integrated circuit compliant designed to equalize and restore signals received over 75 co-axial cable. Automatic cable equalization Multi-standard operation from 143Mb/s to 2.97Gb/s The GS2974B is designed to support SMPTE 424M, SMPTE 292M and SMPTE 259M, and is optimized for performance Supports DVB-ASI at 270Mb/s at 1.485Gb/s and 2.97Gb/s. Small footprint (4mm x 4mm) The GS2974B features DC restoration to compensate for the Pb-free and RoHS compliant DC content of SMPTE pathological test patterns. Manual bypass (useful for low data rates with slow rise/fall times) A voltage programmable mute threshold (MCLADJ), applicable for SD mode (refer to Section 4.3), is included to Performance optimized for 1.485Gb/s and 2.97Gb/s allow muting of the GS2974B output when an approximate Typical equalized length of Belden 1694A cable: 140m selected cable length is reached for SMPTE 259M signals. at 2.97Gb/s, 230m at 1.485Gb/s, and 250m at 270Mb/s This feature allows the GS2974B to distinguish between 50 differential output (internal 50 pull-ups) low amplitude SD-SDI signals and noise at the input of the Programmable mute based on max cable length adjust device. The serial digital outputs of the GS2974B may be forced to a mute state by applying a voltage to the MUTE Single 3.3V power supply operation pin. Operating temperature range: 0C to +70C Power consumption is typically 215mW using a 3.3V Footprint compatible with GS2974A and GS1574A power supply. The GS2974B is lead-free, and the encapsulation compound does not contain halogenated Applications flame retardant. SMPTE 424M, SMPTE 292M and SMPTE 259M Coaxial Cable Serial Digital Interfaces. This component and all homogeneous subcomponents are RoHS compliant. CABLE LENGTH ADJUSTOR CD CARRIER DETECT MCLADJ MUTE MUTE BYPASS SDO SDI EQUALIZER DC RESTORE OUTPUT SDI SDO AGC GS2974B Functional Block Diagram GS2974B GS2974B HD-LINX III Adaptive Cable 1 of 17 www.gennum.com Equalizer Data Sheet 45062 - 3 April 2009Revision History Version ECR PCN Date Changes and/or Modifications 3 151788 April 2009 Corrected 250pc part number in 6.6 Ordering Information. 2 151333 January 2009 Added 2500pc reel size to 6.6 Ordering Information. Added the maximum power consumption in Table 2-1: DC Electrical Characteristics. Changed the Output Voltage Swing from 550mV to 600mV in Table p-p p-p 2-2: AC Electrical Characteristics. 1 149533 April 2008 Converted to Data Sheet. Updated document format. Re-wrote section 4.3 Programmable Maximum Cable Length Adjust (MCLADJ). Added Tape and Reel to 6.6 Ordering Information. 0 148227 November Converted to Preliminary Data Sheet. 2007 Changed Input ESD Voltage to 4kV in 2.1 Absolute Maximum Ratings. Replaced 5.3 Typical Application Circuit. B 146732 August 2007 Addition of High Gain Adaptive Cable Equalizers on page 12, and removal of Typical Application Circuit on page 13. A 145689 July 2007 New document. GS2974B GS2974B HD-LINX III Adaptive Cable 2 of 17 Equalizer Data Sheet 45062 - 3 April 2009