Products In This Thread

LTC2497 Production
The LTC2497 is a 16-channel (eight differential), 16-bit, No Latency ?S™ ADC with Easy Drive technology and a 2-wire, I2C interface. The patented sampling...
Datasheet
LTC2497 on Analog.com

  • State Verified Answer
  • Replies 20 replies
  • Answers 1 answer
  • Subscribers 70 subscribers
  • Views 5628 views
  • Users 0 members are here
Options
Related 

        

            Post
             Go back to editing
        

    

    


    

    









		












	
	
			
	
			
		
	
	
		

		
LTC2497 Conversion



		

			

									
					    SLee144
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Jun 8, 2020 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    Hi
    

    I am using LTC2497. I am trying to get the ADC conversion reading, could anyone explain how does the conversion of 2's compliment to decimal works on this ADC? I tried many times and it does not seem to be working.
    

    Thank you.
    

    

      
    
								
    

				
				
		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    


	















    
	
    
	
    
					



			








	
	
	
	



Parents
	
      
	

    • 
	
      



	
		
	
	



      
	
      
		
      
							
					
      
		
      
			
													0
							
			
				
									
							        
			
			
			
      •  Analog Employees  
      
            
			                            
                        
                on Jun 8, 2020 8:44 PM
            
            
					
      
	
      

		
		
      
					
      The LTC2497 is 16 Bits + Sign. B22-B6 are in two's complement format. For example Code 1010 0000 0000 0000 0000 0000 
      

      B23 and B22 are 10. This indicates the output code is greater than or equal to 0 and less than full scale . Bits 22-6 are 0 1000 0000 0000 0000. This is equal to decimal +32768. 
      

      A negative code example would be 0111 1111 1111 1111 1111 1111. B23 and B22 are 01. This indicates the output code is less than 0 and reater than or equal to -FS. Bits 22-6 are 1 1111 1111 1111 1111. this is equal to decimal -1.
      
			
      

		
		
		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      

      • 

	

    • 
	
      



	
		
	
	



      
	
      
		
      
							
					
      
		
      
			
													0
							
			
				
									
							        
			
			
			
        
            
			                            
                        
                on Jun 9, 2020 6:42 AM
            
            
												
						in reply to ghoover
					
									
        
	
        

		
		
        
					
        Hi ghoover
        

        

        Thanks for the promopt response. I tried the conversion...I still didnt get the result..did i missed anything?
        

        

          
        
			
        

		
		
		
		
	
        
	
        
		
        
			
		
        
	
        
	
        
		
						
						
				
						
				
				
		
		
        
			
		
        
	
        

        

        • 

	
      



Reply



Children
	
      No Data