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ADS131A02: Negative charge pump implicatications

Martin Echarri
Prodigy 80 points
Part Number: ADS131A02

Hi, I have a question about the negative charge pump. Are any change in noise/ENOB specification if the charge pump is on?. When the charge pump is on, are the only two changes current consumption and analog voltage input range?

  • 0
    TI__Guru* 97655 points
    Martin,


    I'm not aware of any differences in performance of the device with and without the use of the negative charge pump. I'll need to look into it a bit, but I should be able to get back to you soon.


    Joseph Wu
  • 0 in reply to Joseph Wu
    TI__Guru* 97655 points
    Martin,


    I talked to someone who had done some evaluation of the device with the negative charge pump. Using the charge pump is similar to any operation with the analog supply at 5V, which is where I think most of the electrical characteristics table and typical characteristics graphs are shown.

    In general, the specifications and performance improve as the supply is lowered to 3.3 and the CLKIN rate is lowered.


    Joseph Wu
  • 0 in reply to Joseph Wu
    Prodigy 80 points 
    Joseph,
    Thank for you reply. 
    I will analyze these data and any questions I will consult again.

    Martin

    

    
			
    

		
		
		
		
	
    
	
    
		
    
			
		
    
	
    

	            
                	
	
    
				
		                
                
                
                
                
                
                
        		
		
				
    
			
		
    
		
		 
		
		
     
    
	
    

    
			
    
			
    
		
    

		
    
	
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