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ADC in AD9361



		

			

									Anonymous
							

			
				
									Anonymous
											
			
			
				
    
			
			
			    	
			                    
                
				                on Apr 16, 2019 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    Hi all,
    

    Does anyone know further details about the ADC used in AD9361? I would like to know the main specifications or, at least, what is the voltage range of detection at the input, in particular the minimum detectable noise. I read somewhere that the maximum input is 0.625 V (o dBFS), but not sure whether this is correct.
    

    Many thanks in advance.
    
								
    

				
				
		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    


	















    
	
    
	
    
					



			


				
	









	
      
	

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													+1
							
			
				
									
							        
			
			
			
      •  Analog Employees  
      
            
			                            
                        
                on Apr 16, 2019 7:48 PM
            
            
					
      
	
      

		
		
      
					
      From page 35 of the user guide, "The ADC maximum input (0 dBFS) is 0.625 V peak. However, to avoid compression the maximum recommend peak input level to the ADC is 0.5 V peak, which is 1.9 dB lower than full scale."
      

      As for minimum detectable signal, the datasheet contains typical noise figure values that can be expected at 800 MHz, 2.4 GHz and 5.5 GHz. Using the bandwidth of your application's test signal, MDS can calculated from the equation,
      

      MDS (dBm) = 10log10(Boltzmann constant x temp. in kelvin) + Noise Figure (in dB) + 10log10(bandwidth)
      
			
      

		
		
		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
				
						
						
				
				
		
		
      
			
		
      
	
      

      

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