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ADXL327 Production
The ADXL327 is a small, low power, complete 3-axis accelerometer with signal conditioned voltage outputs. The product measures acceleration with a minimum...
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ADXL327 on Analog.com

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ADXL327 buffering

		
	
				

			

									
					    IngJunior
					
							

            
            			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Mar 4, 2011 
				
			
			
		
    
		
		                     
				
        		
    
		    
		    		    
		    			
    
			    
    Hi all,
    
 
    i am using ADXL327 as accelerometer sensor in low noise application. I need to amplify its output voltage with an op amp put in inverting configuration which has low input resistance due to low noise concern.
    
 
    The ADXL327 has an output impedance of 32kohm so do i need to put a unity gain buffer before the inverting amplifier?
    
 
    Best regards
    
			
    
			
									
		                             
                        

    
    
                                            
                 accelerometers
                
                                                    
                 Sensors and MEMS
                
                                                    
                 adxl327
                
                                
            
    
    
    
		
    

				
				        
        		
    
			
						
									
												
			
			
                        
                                    
                        
                        
                        
            
			            
						
						
			
			
			
			
		
    

        
        
        
    
					
    
			
    


    
















    
	
    
	
    
					



			


				
	









	
      
	

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							FormerMember
					
      
		
      
		    
		    		    
			
				
									FormerMember
							        
			
			
			
    
            
						
                            
            
            				
            
                on Mar 4, 2011 7:47 PM
            
            
						
			            		
    
		
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    Ing,
    
 
      The short answer is yes, you need a buffer, _but_
    
 
      If you don't have to go to DC, you can be non-inverting with a cap in the resistor to ground.
    
 
    What supply voltage(s)?  Any restriction on supply current?  You may want to contact your
    
 
    local FAE for a detailed analysis.
    
 
    Harry
    
			
    

		
			
	      

		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
						
						
						
				
				
		
		
    
			
		
    
	
    

    


	

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                on Aug 2, 2018 12:20 PM
            
            
						
			            		
      
		
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      This question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.

      Thank you,
      EZ Admin
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
				
						
						
				
				
		
		
      
			
		
      
	
      

      

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