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ADUCM355 Recommended for New Designs
The ADuCM355 is an on-chip system that controls and measures electrochemical sensors and biosensors. The ADuCM355 is an ultralow power, mixed-signal microcontroller...
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ADUCM355 on Analog.com

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aducm355 rtd temperature value shows wrong value

		
				

			

									
					    cn0428sansel
					
							


			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Oct 4, 2024 
				
			
			
		
    
		
		                     
				
        		
    
		    
		    		    
    
		      		            		        
    Category: Software
    
    		        		            		    
    Product Number:  aducm355 
    
    		        		    		    
    
		    		    
		    			
    
			    
    Hi Analog Team,
    

    I am using ADUCM355(CN0428) and trying to read PT100 RTD sensor.First i connected 30kΩ resistor which read back a 25.3°C read in NTC mode.Then I changed code to RTD mode and read temperature it read back 35Ω and -250°C.Please give a solution as soon as possible.My project is on hold because of his issue.
    
			
    
			
									
		                             
                        

    
    
                                            
                 software
                
                                                    
                 Sensors and MEMS
                
                                                    
                 aducm355
                
                                                    
                 Electrochemical Sensors
                
                                
            
    
    
    
		
    

				
				        
        		
    
			
						
									
												
			
			
                        
                                    
                        
                        
                        
            
			            
						
						
			
			
			
			
		
    

        
        
        
    
					
    
			
    


    
















    
	
    
	
    
					



			


				
	









	
      
	

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                on Oct 4, 2024 2:24 AM
            
            
						
			            		
        
		
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        When i connect a 4.7M resistor in conductivity channel and connect an RTD sensor in temperature the readings of temperature are changing drastically which can be seen in the document attached.When i connect 100Ω reisistor in RTD channel and the conductivity channel is left open the temperature is correct.when i connect resistor in both the channels issue arrises.Please give me a solution for this issue.
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