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ADIS16488 Obsolete
The ADIS16488 iSensor® MEMS IMU is a complete inertial system that includes a triaxis gyroscope, a triaxis accelerometer, triaxis magnetometer and pressure...
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ADIS16488 on Analog.com

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ADIS16488 Calibration



		

			

									
					    jmckee
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Jul 26, 2016 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			

    I am using an ADIS16488AMLZ IMU as a reference device for an IMU test/calibration system. I'd like to calibrate/verify the device, as it will be the basis for calibration of any devices under test. I'm not an expert in sensor technology, but my current understanding of calibration would be to subject the ADIS to a 'known' set of conditions and adjust the internal bias/scale offset registers to make the device 'agree' with the conditions I'm subjecting it to. My problem is how to create the known conditions without some golden unit or calibration standard. Maybe there is some other technique I'm not aware of?
    
 
    I understand that the ADIS16488AMLZ is now obsolete, but if I upgrade to a suitable replacement device (which would presumably come calibrated out of the factory), would I face the same challenge after some time as its characteristics begin to drift? And would I need to consider in-system calibration (ie. to account for factors generated by my test fixture)?
    
 
    
								
    

				
				
		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    


	
    
		
	
    















    
	
    
	
    
					



			








	
	
	
	



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      •  Analog Employees  
      
            
			                            
                        
                on Jul 27, 2016 12:02 AM
            
            
					
      
	
      

		
		
      
					
      Thank you for your post.  The ADIS16488BMLZ is the most suitable replacement for the ADIS16488AMLZ.  We are flattered that the ADIS16488's performance is good enough to be considered as your calibration standard, but without clear performance objectives for your "re-calibration," we can't help you.  Even with more details on your accuracy requirements, calibrating of these devices is quite complex. This is something that we have spent many years perfecting and is actually part of our intellectual property.  In other words, teaching how to do this isn't part of our support model, but perhaps with a bit more insight into what behaviors you need to manage, along with the conditions that the unit will encounter during it use and storage profiles, we can take a fresh look at this. 
      
			
      

		
		
		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      

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      •  Analog Employees  
      
            
			                            
                        
                on Jul 27, 2016 12:02 AM
            
            
					
      
	
      

		
		
      
					
      Thank you for your post.  The ADIS16488BMLZ is the most suitable replacement for the ADIS16488AMLZ.  We are flattered that the ADIS16488's performance is good enough to be considered as your calibration standard, but without clear performance objectives for your "re-calibration," we can't help you.  Even with more details on your accuracy requirements, calibrating of these devices is quite complex. This is something that we have spent many years perfecting and is actually part of our intellectual property.  In other words, teaching how to do this isn't part of our support model, but perhaps with a bit more insight into what behaviors you need to manage, along with the conditions that the unit will encounter during it use and storage profiles, we can take a fresh look at this. 
      
			
      

		
		
		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      

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