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ADV7202 Last Time Buy
The ADV7202 is a video rate sampling Codec. It has the capability of sampling up to five NTSC/PAL/SECAM video I/P signals. The resolution on the front...
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ADV7202 on Analog.com

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  •  Analog Employees  

			
			
			    	
			                    
                
				                on Sep 15, 2014 
				
			
			
		

		
		                    	    

        	    
Thread Summary

                The user is trying to design a system to decode and re-encode a 675 and 1224 line raster composite video signal with a voltage range of -0.88 V to +2.2V and a load impedance of 95 ohms ±5%. The ADV7202 is not suitable for this task, and no other Analog Devices parts support this signal. The user is advised to use a high-speed A/D converter and an FPGA or DSP for decoding and re-encoding. The user also seeks a testbed to generate this signal for testing purposes.
                        	    

                
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I am trying to design a system to decode a specific analog video signal.  The signal I'm interfacing with has the following characteristics:

 
SIGNAL CHARACTERISTICS:

 
TYPE: Analog, Composite Video, 675 and 1224 line raster.

 
SIGNAL RETURN: Radar-Video

 
VOLTAGE RANGE: -0.88 V to +2.2V

 
LOAD IMPEDANCED: 95 ohm ±5%

 
I also need to re-encode to the same specifications after altering the video.  Can the ADV7202 decode this signal, and can it output to the same specifications?

 
Any other recommendations for this signal?  We are also looking for a testbed to generate a video signal with these characteristics prior to integration.  Do you have any devices that can easily produce this signal without significant development?

 
Thanks so much

			

			
									
		                             
                        

    

                                            
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