GS2964-INE3 Semtech

GS2964 Adaptive Cable Equalizer Key Features Description SMPTE 424M, SMPTE 292M and SMPTE 259M The GS2964 is a high-speed BiCMOS integrated circuit compliant designed to equalize and restore signals received over 75 coaxial cable. Automatic cable equalization Multi-standard operation from 143Mb/s to 2.97Gb/s The device is designed to support SMPTE 424M, SMPTE292M and SMPTE 259M, and is optimized for Performance optimized for 270Mb/s, 1.485Gb/s and performance at 270Mb/s, 1.485Gb/s and 2.97Gb/s. 2.97Gb/s. Typical equalized length of Belden 1694A cable: The GS2964 features DC restoration to compensate for the 100m at 2.97Gb/s DC content of SMPTE pathological test patterns. 140m at 1.485Gb/s The Carrier Detect output pin (CD) indicates whether a 180m at 270Mb/s valid input signal has been detected. It can be connected directly to the MUTE pin to mute the output on loss of Supports DVB-ASI at 270Mb/s carrier. A voltage programmable threshold, which can be Manual bypass (useful for low data rates with slow changed via the SQ ADJ pin, forces CD high when the rise/fall times) input signal amplitude falls below the threshold. This Programmable carrier detect with squelch threshold allows the GS2964 to distinguish between low-amplitude adjustment SDI signals and noise at the input of the device. Standard EIA/JEDEC logic control and status signal The equalizing and DC restore stages are disengaged when levels the BYPASS pin is HIGH. No equalization occurs in Bypass Single 3.3V power supply operation mode. 215mW power consumption (typical) The differential outputs can be DC-coupled to Gennum Wide temperature range of -40C to +85C 3.3V cable drivers and reclockers and to other Small footprint QFN package (4mm x 4mm) industry-standard 3.3V CML logic. Drop-in compatible with the GS2974 The GS2964 is footprint and drop-in compatible with Pb-free and RoHS compliant existing GS2974 designs, with no additional application changes required. Applications The device is available in a 16-pin, 4mm x 4mm QFN SMPTE 424M, SMPTE 292M and SMPTE 259M coaxial package. cable serial digital interfaces Power consumption of the GS2964 is typically 215mW. The GS2964 is Pb-free, and the encapsulation compound does not contain halogenated flame retardant. This component and all homogeneous subcomponents are RoHS compliant. GS2964 Adaptive Cable Equalizer 1 of 17 www.gennum.com Data Sheet 51913 - 3 March 2010SQ ADJ BYPASS MUTE CD Squelch Adjust Carrier Detect Mute SDI DC SDO Equalizer Output Restore SDI SDO AGC AGC AGC GS2964 Functional Block Diagram Revision History Version ECR PCN Date Changes and/or Modifications 3 153913 54547 March 2010 Changed ESD rating from 6kV to 5kV in Section 2.1 Absolute Maximum Ratings. 2 152613 September Updates to Output Voltage Swing 2009 specifications in Table 2-2: AC Electrical Characteristics. 1 152312 July 2009 Converted to Data Sheet. 0 151929 May 2009 Conversion to Preliminary Data Sheet. B 151798 April 2009 Updates. A 151181 January 2009 New document. GS2964 Adaptive Cable Equalizer 2 of 17 Data Sheet 51913 - 3 March 2010