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Question about AD8495



		

			

									
						Kazu
					
							

			
				
									
											
							 		
		        	            							
			
			    	
			                    
                
				                on Jan 31, 2018 
				
			
			
		


				
		

		    		    
		    
		    	
			
Hi All,

 
I have a question about the AD8495. Please take a look at the attachment.

 
I think it is not out of spec, but I would like to know the cause of these variation.

 
Regards,

 
Kazu

								


				
							QuestionaboutAD8495.pdf
					
		

			
						
									
									
						
						
			
			
			
			
		


					

			





	

		
	











	

	

					



			








	
	
	
	



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                                 Analog Employees 
                                
                            
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                on Feb 7, 2018 9:49 PM
            
            
					
    
	
    

		
		
    
					
    Hi Kazu,
    
 
    If I'm understanding correctly, it looks like you are using a precision source to simulate the thermocouple voltage at different temperatures.  
    
 
    Is your setup exactly how it is pictured with testing only one part at a time?  Or are you testing all 8 units simultaneously?  Are you able to replicate the 25degC data by just grounding the inputs of the AD8495?  Have you tried switching out the DC input source?  
    
 
    Do you have a photo of your setup that you could upload?
    
 
    Regards,
    
 
    Jordyn
    
			
    

		
		
		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
						
				
						
				
				
		
		
    
			
		
    
	
    

    

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													0
							
			
				
									
							        
            
                                                                                                        
      
                            
    • 
                                 Analog Employees 
                                
                            
      • 
                        
     
                                                           			
			                            
                        
                on Feb 7, 2018 9:49 PM
            
            
					
    
	
    

		
		
    
					
    Hi Kazu,
    
 
    If I'm understanding correctly, it looks like you are using a precision source to simulate the thermocouple voltage at different temperatures.  
    
 
    Is your setup exactly how it is pictured with testing only one part at a time?  Or are you testing all 8 units simultaneously?  Are you able to replicate the 25degC data by just grounding the inputs of the AD8495?  Have you tried switching out the DC input source?  
    
 
    Do you have a photo of your setup that you could upload?
    
 
    Regards,
    
 
    Jordyn
    
			
    

		
		
		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
						
				
						
				
				
		
		
    
			
		
    
	
    

    

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