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CN0532 long term operating temperature

		
	
				

			

									
					    FelipeCook
					
							

            
            			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Feb 13, 2023 
				
			
			
		
    
		
		                    	    
    
        	    
    Thread Summary
    
                The user inquired about the suitability of the CN0532 for monitoring vibration on equipment with surface temperatures of 90 to 110°C during 10-hour shifts, 6 days a week. The support engineer confirmed that all CN0532 components are rated to 125°C, but long-term reliability at high temperatures is not characterized. The ADXL1002 accelerometer may experience offset drift due to package degradation, potentially a few 100 mg over its lifetime, though this is application-dependent.
                        	    
    
                
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    Category: Hardware
    
    		        		            		    
    Product Number:  CN0532 
    
    		        		    		    
    
		    		    
		    			
    
			    
    Hi, 
    

    One of the equipment for which we want to monitor vibration has a surface temperature of 90 to 110 degree Celsius. These conditions are during 10 hour shifts, 6 days a week.
    

    

    Is the CN0532 capable for the job? The datasheet says maximum operating temperature 125 degrees, but it doesn't say anything about long term reliability at high temperatures.
    

    Regards,
    
			
    
			
									
		                             
                        

    
    
                                            
                 hardware
                
                                                    
                 CN0532
                
                                                    
                 sensors
                
                                                    
                 accelerometers
                
                                                    
                 adxl1002
                
                                        
                                            
                
                
                                
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      •  Analog Employees  
      
            
						
                            
            
            				
            
                on Jul 3, 2023 3:35 PM
            
            
						
			            		
      
		
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      Hi, 
      

      All CN0532 components are rated to 125C, but we did not characterize long term reliability of this circuit. Notice that the ADXL1002 (accelerometer on the CN0532) is on a over molded package, so package degradation/aging is expected at high temperatures. This would be translated as an offset drift at the output of the ADXL1002. Generally, we would expect the ADXL1002 to drift a few 100 mg over life time, but this is very difficult to quantify as is application dependent. 
      

      I hope this helps, 
      

      Pablo .
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
						
						
				
				
		
		
      
			
		
      
	
      

      

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                on Jul 29, 2024 10:23 AM
            
            
												
						in reply to PdelCorro
					
										
			            		
        
		
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        Hi Pablo,
        

        

        On your reply above, did you mean 100 mVDC or mg?  I am trying to quantify what kind of drift to expect on the DC offset due to this package degradation/aging.
        

        Thanks,
        

        LdlT
        
			
        

		
			
	      

		
		
	
        
	
        
		
        
			
		
        
	
        
	
        
		
						
						
				
						
				
				
		
		
        
			
		
        
	
        

        

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