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AD5941 Recommended for New Designs
The AD5940 and AD5941 are high precision, low power analog front ends (AFEs) designed for portable applications that require high precision, electrochemical...
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CN0510 - Measurement Values

		
	
				

			

									
					    eforzano
					
							


			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on May 28, 2025 
				
			
			
		
    
		
		                     
				
        		
    
		    
		    		    
    
		      		            		        
    Category: Hardware
    
    		        		            		    
    Product Number:  AD5941  
    
    		        		    		    
    
		    		    
		    			
    
			    
    Hi!

    We have a few questions on the parameters and the measurements we are receiving. 

    Test Scenario: We first were going to measure the device under 1 milliohm resistor and a 1ohm resistor for a baseline. And then we were going to measure LiFO prismatic battery at ~100s microohms impedance. 
    

      

    • Can you explain what values to use for:

        

      • AC Amplitude
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      • DC Bias
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      • Calibration Resistor
        • 

      • Number of Points - Is this grabbing a certain number of interpolated points between frequency sweeps?
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      • 

    • Are there certain limitations to the batteries that we can measure? 
      • 

    • Is there a test we can do to make sure we did not overload the board?
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    Thanks 
    
			
    
			
									
		                             
                        

    
    
                                            
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      •  Analog Employees  
      
            
						
                            
            
            				
            
                on Oct 29, 2025 3:39 AM
            
            
						
			            		
      
		
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      Hi,
      

      Typically AC Amplitude <= 300mV and DC Bias =1.2V is ideal for the Darlington pair in CN0510.
      

      Calibration resistor of 1mOhm may be used for your use case. 
      

      Number of points is the number of frequencies between start and end frequency at which measurement is taken.
      

      Max battery voltage is decided by rating of the isolation cap Cisox. If max Battery voltage expected is 12V, cap rating must be >=20V.
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      

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