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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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AD5941 on Analog.com

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AD5941 Impedance example Vzero setting



		

			

									
					    Liamm36
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Jan 11, 2023 
				
			
			
		
    

				
		
    
		    		    
		    
		    		            		        
    Category: Software
    
    		        		            		    
    Product Number:  AD5941 
    
    		        		        		        
    Software Version: master
    
    		    		    	
			
    Hey,
    

    

    In the Impedance example whenever a DC voltage is applied, the VZero is also set to half of it's maximum range. I can see this been done 
    

    line 260 of impedance.c is
    

        lpdac_cfg.DacData6Bit = 0x40>>1;            /* Set Vzero to middle scale. */

    but why is it set to the middle of the scale? Does that not just lower the maximum possible bias applied since the bias is the difference between Vzero and VBias?


    
								
    

				
				
		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    


	
    
		
	
    















    
	
    
	
    
					



			








	
	
	
	



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