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ADT7410 Production
The ADT7410 is a high accuracy digital temperature sensor in a narrow SOIC package. It contains a band gap temperature reference and a 13-bit ADC to monitor...
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ADT7410 on Analog.com

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Which pin of the ADT7422 can transfer the most heat?



		

			

									
					    Jack Song
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Oct 20, 2021 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    1. adt7410 is marked "GND pin transfers the most heat", but ADT7422 is not marked. can you know which pin can transfer the most heat?
    

     
    

    

     
    

    2.The following contents are marked in the manual of ADT7422. my understanding is that when designing the chip, it is necessary to avoid the heat dissipation of the chip from affecting the heat source to be measured, so there should be specific points for attention in PCB design. is there a more detailed explanation for this? thank you!
    

     
    

    
									
			        
		
    

				
				
		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    


	















    
	
    
	
    
					



			








	
	
	
	



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      •  Analog Employees  
      
            
			                            
                        
                on Jan 11, 2022 9:59 AM
            
            
					
      
	
      

		
		
      
					
      Hi Jack,
      

      My apologies for the late response. The heat is transferred through the pins of the device, most of the heat transfer is through the exposed pad (EPAD), on the underside of the package. To ensure correct operation, either leave the exposed pad floating or connect the exposed pad to ground. To get the best thermal contact you must connect the EPAD to the object being measured.
      

      Regards,
      

      Mae
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
				
						
						
				
				
		
		
      
			
		
      
	
      

      

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													0
							
			
				
									
							        
			
			
			
      •  Analog Employees  
      
            
			                            
                        
                on Jan 11, 2022 9:59 AM
            
            
					
      
	
      

		
		
      
					
      Hi Jack,
      

      My apologies for the late response. The heat is transferred through the pins of the device, most of the heat transfer is through the exposed pad (EPAD), on the underside of the package. To ensure correct operation, either leave the exposed pad floating or connect the exposed pad to ground. To get the best thermal contact you must connect the EPAD to the object being measured.
      

      Regards,
      

      Mae
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
				
						
						
				
				
		
		
      
			
		
      
	
      

      

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