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12-Bit Multiformat SDTV Video Decoder with Fast Switch Overlay Support

Model: ADV7188

  • Multiformat video decoder supports NTSC (J/M/4.43), PAL (B/D/G/H/I/M/N), SECAM
  • Integrates four 54 MHz, Noise Shaped Video (NSV), 12-bit ADCs
  • SCART fast blank support
  • Clocked from a single 28.63636 MHz crystal
  • Line-locked clock-compatible (LLC)
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The ADV7188 integrated video decoder automatically detects and converts standard analog baseband television signals compatible with worldwide NTSC, PAL, and SECAM standards into 4:2:2 component video data compatible with 20-/16-/10-/8-bit CCIR 601/CCIR 656.The advanced, highly flexible digital output interface enables performance video decoding and conversion in line-locked, clock-based systems. This makes the device ideally suited for a broad range of applications with diverse analog video character-istics, including tape-based sources, broadcast sources, security and surveillance cameras, and professional systems.The accurate 12-bit ADC provides professional quality video performance and is unmatched. This allows true 10-bit resolution in the 10-bit output mode.The 12 analog input channels accept standard composite, S-video, and component video signals in an extensive number of combinations.AGC and clamp-restore circuitry allow an input video signal peak-to-peak range of 0.5 V to 1.6 V. Alternatively, these can be bypassed for manual settings.The fixed 54 MHz clocking of the ADCs and datapath for all modes allows very precise, accurate sampling and digital filtering. The line-locked clock output allows the output data rate, timing signals, and output clock signals to be synchronous, asynchronous, or line locked even with ±5% variation in line length. The output control signals allow glueless interface connections in most applications. The ADV7188 modes are set up over a 2-wire, serial, bidirectional port (I2C compatible).
  • Multiformat video decoder supports NTSC (J/M/4.43), PAL (B/D/G/H/I/M/N), SECAM
  • Integrates four 54 MHz, Noise Shaped Video (NSV), 12-bit ADCs
  • SCART fast blank support
  • Clocked from a single 28.63636 MHz crystal
  • Line-locked clock-compatible (LLC)
  • Adaptive Digital Line Length Tracking (ADLLT), signal processing, and enhanced FIFO management give mini-TBC functionality
  • 5-line adaptive comb filters
  • Proprietary architecture for locking to weak, noisy, and unstable video sources such as VCRs and tuners
  • Subcarrier frequency lock and status information output
  • Integrated automatic gain control (AGC) with adaptive peak white mode
  • Macrovision copy protection detection
  • Chroma transient improvement (CTI)
 
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