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Semtech GV7700

HD-VLC™ Transmitter


TopologyOther Topology
IC revision7


The GV7700 is a serial digital video transmitter for High Definition component video. With integrated cable driving technology, the GV7700 is capable of transmitting compressedvideo at 270Mb/s or 540Mb/s, or uncompressed video at 1.485Gb/s or 2.97Gb/s, over 75Ω coaxial cable, ordifferentially over 100Ω twisted pair cable.The GV7700 integrates the High Definition Visually Lossless CODEC (HD-VLC™) technology, which has been developedspecifically to reduce the transmission data rate of HD video over both coaxial and unshielded twisted pair (UTP) cable. This is achieved by encoding the HD video, normallytransmitted at a serial data rate of 1.485Gb/s, to the same rate as Standard Definition (SD) video, at 270Mb/s serial data rate.


  • Serial digital video transmitter for HD and 3G videosurveillance and HDcctv applications
  • Quad rate operation: 270Mb/s, 540Mb/s, 1.485Gb/s,and 2.97Gb/s
  • Supports HDcctv 1.0, HD-SDI (ST 292), 3G-SDI (ST 424),and SD-SDI (ST 259)1
  • Integrated High Definition Visually Lossless CODEC(HD-VLC™) for extended cable reach: HD over 550m of Belden 543945 CCTV coax at270Mb/s Full HD over 400m of Belden 543945 CCTV coax at540Mb/s HD over 150m of Cat-5e/6 UTP cable at 270Mb/s
  • Configurable 50/75Ω cable driver output, for bothcoaxial and twisted pair cable transmission
  • Integrated audio embedder with support for up to 4channels of I2S serial digital audio at 32kHz, 44.1kHzand 48kHz sample rates
  • Downstream ancillary data insertion
  • Supports both 720p and 1080p HD formats: Full HD: 1080p50/59.94/60fps HD: 1080p25/29.97/30fps HD: 720p25/29.97/30/50/59.94/60fps
  • Support for both 8/10-bit and 16/20-bit BT.1120compliant video interfaces, with embedded TRS orexternal HVF timing
  • 4-wire Gennum Serial Peripheral Interface (GSPI 2.0) forexternal host command and control
  • Dedicated JTAG test interface
  • 1.8V core power supply and 1.8V or 3.3V digital I/Osupply
  • Small-footprint 84-pin dual-row QFN (7mm x 7mm)
  • Low power operation, typically 180mW
  • Wide operating temperature range: -20°C to + 85°C
  • Pb-free and RoHS compliant

Typical applications

  • HD-SDI, 3G-SDI, and HDcctv peripherals
  • HD/3G security cameras
  • Media converters
  • Industrial cameras
  • Video multiplexers


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