Products Mentioned

ADXL1004 Recommended for New Designs
The ADXL1004 delivers ultralow noise density over an extended frequency range and is optimized for bearing fault detection and diagnostics. The ADXL1004...
Datasheet
ADXL1004 on Analog.com

ADXL354 Recommended for New Designs
The analog output ADXL354 and the digital output ADXL355 are low noise density, low 0 g offset drift, low power, 3-axis accelerometers with selectable...
ADXL354 on Analog.com

ADXL356 Recommended for New Designs
The analog output ADXL356 and the digital output ADXL357 are low noise density, low 0 g offset drift, low power, 3-axis accelerometers with selectable...
Datasheet
ADXL356 on Analog.com

ADXL1002 Recommended for New Designs
The ADXL1001/ADXL1002 deliver ultralow noise density over an extended frequency range with two full-scale range options, and are optimized for industrial...
Datasheet
ADXL1002 on Analog.com

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About ADXL1004 &ADXL354 VRE & detection range

		
	
				

			

									
					    Yuya
					
							


			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Mar 29, 2023 
				
			
			
		
    
		
		                     
				
        		
    
		    
		    		    
    
		      		            		        
    Category: Hardware
    
    		        		            		    
    Product Number:  ADXL1004, ADXL354 
    
    		        		    		    
    
		    		    
		    			
    
			    
    Hi
    


    I'm considering accelerometers such as the ADXL354 and ADXL1004.
    I have two questions about this.
    

    ①Does the vibration rectification error (VRE) occur at a constant rate to the sensor full scale?
    　Is there a difference between the high accelerometer (ADXL1004) and the low accelerometer (ADXL354)?
    

    ②What are the specifications of the detection range when the analog output ADXL series is used with AC coupling?
    

    　(Example: Specification range - gravitational acceleration g - vibration rectification error VRE = detection range?)
    

    

    Best regards<
    

    Yuya
    
			
    
			
									
		                             
                        

    
    
                                            
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      •  Analog Employees  
      
            
						
                            
            
            				
            
                on Apr 6, 2023 2:35 PM
            
            
						
			            		
      
		
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      Hi  , 
      

      1) I dont understand your first question. Can you please explain? what do you mean by " a constant rate "? The higher the sensor full scale range, the lower the VRE effect. 
      

      2) the range is still the DS specified range. AC coupling just removes DC component electrically. Mechanically, the MEMS sensor still detects DC. 
      

      Regards, 
      

      Pablo. 
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      

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                on Apr 16, 2023 9:33 PM
            
            
												
						in reply to PdelCorro
					
										
			            		
        
		
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        Hi, Pablo
        

        

        Thank you for your reply.
        

        I thought that a constant rate might be an indicator such as VRE being about XX% of the full scale.
        

        Does the ADXL354, ADXL1002, and ADXL1004 have a VRE index of XX% of full scale?
        

        

        I would like to know the worst case VRE value for ADXL354, ADXL1002, ADXL1004.
        

        

        Best regards, 
        

        Yuya
        
			
        

		
			
	      

		
		
	
        
	
        
		
        
			
		
        
	
        
	
        
		
						
						
				
						
				
				
		
		
        
			
		
        
	
        

        

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        •  Analog Employees  
        •  Super User  
        
            
						
                            
            
            				
            
                on Aug 16, 2023 7:47 PM
            
            
												
						in reply to Yuya
					
										
			            		
        
		
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        I agree with  : what do you mean by "rate."  Normally, we see that reference with gyroscopes, where the intention is the indicate angular rate of rotation.  Are you referring to constant acceleration? 
        

        Also, the ADXL354 is not the product you want to use, if VRE is a strong consideration.  I would recommend considering the ADXL356 instead, where the VRE is approximately 100ug/g2. up to the point at which saturation starts. 
        

        We might have some data on the ADXL1002 and ADXL1004, but will not be in a position to quantify a maximum. Is this application still active? 
        

        Thank you!  
        
			
        

		
			
	      

		
		
	
        
	
        
		
        
			
		
        
	
        
	
        
		
						
						
				
						
				
				
		
		
        
			
		
        
	
        

        

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        •  Analog Employees  
        
            
						
                            
            
            				
            
                on Aug 21, 2023 9:26 AM
            
            
												
						in reply to NevadaMark
					
										
			            		
        
		
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        Hi  , 
        

        As I mentioned before, typically, the higher the acceleration range of the accelerometer, the lower the VRE effect. I am curious why you are comparing ADXL354 with ADXL1002 and ADXL1004? the g ranges are completely different. 
        

        I agree with Mark that ADXL354 is not the right product if you are looking for low VRE. 
        

        Regards, 
        

        Pablo. 
        
			
        

		
			
	      

		
		
	
        
	
        
		
        
			
		
        
	
        
	
        
		
						
						
						
						
				
				
		
		
        
			
		
        
	
        

        

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