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10-Bit, SDTV Video Decoder with Differential Inputs

Model: ADV7182

  • Worldwide NTSC/PAL/SECAM color demodulation support
  • One 10-bit analog-to-digital converter (ADC), 4× oversampling for CVBS, 2× oversampling for Y/C mode, and 2× oversampling for YPrPb (per channel)
  • Four analog video input channels with on-chip antialiasing filter
  • CVBS (composite), Y/C (S-Video), and YPrPb (component) video input support
  • Fully differential, pseudo differential, and single-ended CVBS video input support
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The ADV7182 automatically detects and converts standard analog baseband video signals compatible with worldwide NTSC, PAL, and SECAM standards into a 4:2:2 component video data stream. This video data stream is compatible with the 8-bit ITU-R BT.656 interface standard. External HS, VS, and FIELD signals can provide timing references for LCD controllers and other video ASICs. The accurate 10-bit analog-to-digital conversion provides professional quality video performance for consumer applications with true 8-bit data resolution. The analog video inputs accept both single-ended, pseudo-differential, and fully differential composite video signals as well as S-Video and YPbPr video signals, supporting a wide range of consumer and automotive video sources.The ADV7182 along with an external resistor divider provide a common-mode input range of 4 V, enabling the removal of large signal, common-mode transients present on the video lines. Common-mode rejection (CMR) values of up to 80 dB can be achieved without the need for external amplifier circuitry.The AGC and clamp restore circuitry allow an input video signal peak-to-peak range to 1.0 V at the analog video input pin of the ADV7182. Alternatively, these can be bypassed for manual settings.The ADV7182 can be protected from short-to-battery (STB) events with standard ac coupling capacitors.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 per line length variation.The ADV7182 is programmed via a two-wire, serial bidirectional port (I2C compatible) and is fabricated in a 1.8 V CMOS process. Its monolithic CMOS construction ensures greater functionality with lower power dissipation. The LFCSP package options make the decoder ideal for space-constrained portable applications.The ADV7182 is a versatile one-chip multiformat video decoder that automatically detects PAL, NTSC, and SECAM standards in the form of composite, S-Video, and component video. The ADV7182 can receive composite signals in either single-ended or differential modes. This makes the ADV7182 ideal for automotive applications.The ADV7182 converts these analog video formats into a digital 8-bit ITU-R BT.656 video stream.The digital video output stream of the ADV7182 interfaces easily to a wide range of MPEG encoders, codecs, mobile video processors, and Analog Devices, Inc., digital video encoders, such as the ADV7391.
  • Worldwide NTSC/PAL/SECAM color demodulation support
  • One 10-bit analog-to-digital converter (ADC), 4× oversampling for CVBS, 2× oversampling for Y/C mode, and 2× oversampling for YPrPb (per channel)
  • Four analog video input channels with on-chip antialiasing filter
  • CVBS (composite), Y/C (S-Video), and YPrPb (component) video input support
  • Fully differential, pseudo differential, and single-ended CVBS video input support
  • Up to 4 V common-mode input range solution
  • Excellent common-mode rejection capabilities
  • Five-line adaptive comb filters and CTI/DNR video enhancement
  • TBC functionality provided by adaptive digital line length tracking (ADLLT), signal processing, and enhanced first in, first out (FIFO) management
  • Integrated automatic gain control (AGC) with adaptive peak white mode
  • Video fast switch capability
  • Adaptive contrast enhancement (ACE)
  • Down dither (8 bits to 6 bits)
  • RoHS compliant LFCSP
  • Available in 2 package Tray(ADV7182WBCPZ ) and Reel(ADV7182WBCPZ-RL )
 
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