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The AD8210 is a single-supply, difference amplifier ideal for amplifying small differential voltages in the presence of large common-mode voltages. The...
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Internal resistor precision

		
	
				

			

									
					    szn93
					
							

            
            			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Jan 22, 2025 
				
			
			
		
    
		
		                     
				
        		
    
		    
		    		    
    
		      		            		        
    Category: Datasheet/Specs
    
    		        		            		    
    Product Number:  AD8210  
    
    		        		    		    
    
		    		    
		    			
    
			    
    Dear Support,
    


    According to the AD8210 datasheet, the internal series resistors on the IN+ and IN- inputs are 2kohm.
    

    Can you tell me what the tolerance of each of these is?
    

    I would like to calculate how much inaccuracy it causes if the external series resistor is >10ohm.
    

    Best regards,
    
			
    
			
									
		                             
                        

    
    
                                            
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      •  Analog Employees  
      •  Super User  
      
            
						
                            
            
            				
            
                on Feb 9, 2025 9:30 PM
            
            
						
			            		
      
		
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      Hi  ,
      

      Good day. Unfortunately, there were no specifications for the tolerance of the internal resistors. However, the internal resistors' effect on the gain is already measured and specified based on the gain accuracy of the part. Here is the specification for 5 V:

       
      

      You can use this value for the error calculation of your system. Thank you.

      Regards,
      Gilbeys
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
						
						
				
				
		
		
      
			
		
      
	
      

      

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