Products Mentioned

AD9284 Recommended for New Designs
The AD9284 is a dual 8-bit, monolithic sampling, analog-to-digital converter (ADC) that supports simultaneous operation and is optimized for low cost,...
Datasheet
AD9284 on Analog.com

Associated Drivers

ADA4937-2 Recommended for New Designs
The ADA4937-1 / ADA4937-2 are low noise, ultralow distortion, high speed differential amplifiers. They are an ideal choice for driving high performance...
Datasheet
ADA4937-2 on Analog.com

Associated Drivers

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AD9284 - Can i swap positive and negative pin of one of the ADC block?



		

			

									
					    maheshkv
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Mar 6, 2017 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    Hi,
    
 
    I am using AD9284 dual ADC in conjunction with driver ADA4937-2 for one of the IQ receiver. I am facing difficulty in routing the outputs of driver to the ADC deferentially without changing the layer. Is it recommended to swap the inputs of one of the ADC?
    
									
			        
		
    

				
						
        

    
    Tags: 
                                            
                 amplifiers
                
                                                    
                 ada4937-2
                
                                                    
                 Differential Amplifiers and ADC Drivers
                
                                                    
                 ad9284
                
                                                    
                 High Speed A/D Converters >10 MSPS
                
                                        
                                            
                
                
                                        
                                            
                
                
                                
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      •  Analog Employees  
      
            
						
                            
            
            				
            
                on Mar 7, 2017 10:02 PM
            
            
					
      
	
      

		
		
      
					
      Hi Mahesh,
      
 
      Swapping the input polarity on one channel of the ADC will effectively flip the phase of the output on that channel, as compared to the other ADC channel. If you are counting on your two Analog inputs remaining in-phase with each other its best to drive the ADC inputs symmetrically.
      
 
      Best Regards,
      
 
      TonyM
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
				
						
						
				
				
		
		
      
			
		
      
	
      

      

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