GS2974B

Overview

The GS2974B is a high-speed BiCMOS integrated circuit designed to equalize and restore signals received over 75Ω co-axial cable.

The GS2974B is designed to support SMPTE 424M, SMPTE 292M and SMPTE 259M, and is optimized for performance at 1.485Gb/s and 2.97Gb/s.

The GS2974B features DC restoration to compensate for the DC content of SMPTE pathological test patterns.

A voltage programmable mute threshold (MCLADJ), applicable for SD mode (refer to Section 4.3), is included to allow muting of the GS2974B output when an approximate selected cable length is reached for SMPTE 259M signals.

This feature allows the GS2974B to distinguish between low amplitude SD-SDI signals and noise at the input of the device. The serial digital outputs of the GS2974B 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 GS2974B is lead-free, and the encapsulation compound does not contain halogenated flame retardant.

This component and all homogeneous subcomponents are RoHS compliant.

Features/Highlights

  • SMPTE 424M, SMPTE 292M, 344M and SMPTE 259M compliant
  • Automatic cable equalization
  • Multi-standard operation from 143Mb/s to 2.97Gb/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 1.485Gb/s and 2.97Gb/s
  • Typical equalized length of Belden 1694A cable: 140m at 2.97Gb/s, 230m at 1.485Gb/s, and 250m at 270Mb/s
  • 50Ω differential output (internal 50Ω pull-ups)
  • Programmable mute based on max cable length adjust
  • Single 3.3V power supply operation
  • Operating temperature range: 0°C to +70°C
  • Footprint compatible with GS2974A and GS1574A

    • Key Applications

    • SMPTE 424M, SMPTE 292M and SMPTE 259M Coaxial Cable Serial Digital Interfaces.

    Ordering Information

    Part No

    Package

    GS2974BCNE3

    16 pin QFN

    DocumentTypeSize
    		Broadcast Video Product Guide Brochure1.4 MB
    		Equalizers Guide Brochure232 kB
    application/pdf
    		GS2974B Certificate of Compliance Certificate18 kB
    application/pdf
    		GS2974B HD LINX III Adaptive Cable Equzlizer Datasheet698 kB
    application/pdf
    		A Guide For Designing With Gennum's 3G-SDI Equalizers Design Guide701 kB
    application/pdf
    		GS2974BCNE3 Material Composition Sheet RoHS Document17 kB
    application/pdf
    		3Gb/s SDI Demo Board: Altera Version User Guide2.4 MB
    application/pdf
    		3Gb/s SDI Demo Board: Xilinx Version User Guide2.7 MB


    mygennum Account Required - A mygennum account is required to download this resource
    mygennum access must be granted for access - A mygennum customer account with appropriate access is required to download this resource

    © Copyright 2010 Gennum Corporation. All rights reserved.