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LTC2485 Production
The LTC2485 combines a 24-bit plus sign No Latency ?S™ analog-to-digital converter with patented Easy Drive technology and I2C digital interface. The patented...
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LTC2485 on Analog.com

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Why does the LTC2485 datasheet say to use a tantalum Vcc bypass capacitor?



		

			

									
					    adamvs
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Feb 7, 2024 
				
			
			
		
    

				
		
    
		    		    
		    
		    		      		            		        
    Category: Datasheet/Specs
    
    		        		            		    
    Product Number:  LTC2485 
    
    		        		    		    	
			
    Page 10 indicates that the Vcc should be bypassed with a 0.1uF and 1 uF caps.  It says that the 1 uF should be Tantalum. Why is this?
    

    

    www.analog.com/.../2485fd.pdf
    
									
			        
		
    

				
						
        

    
    Tags: 
                                            
                 Single Channel A/D Converters
                
                                                    
                 Datasheet/Specs
                
                                                    
                 Precision A/D Converters
                
                                                    
                 ltc2485
                
                                
            
    
    
    

		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    
















    
	
    
	
    
					



			


				
	









	
      
	

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      •  Analog Employees  
      
            
						
                            
            
            				
            
                on Feb 7, 2024 8:59 PM
            
            
					
      
	
      

		
		
      
					
      Hello  ,
      

      Tantalums are preferred because the internal LDO needs to have a high-ESR capacitor to ensure stability across operating conditions. Well, this is not strictly tantalum, you can add in place a ceramic capacitor with a series resistor of maybe 5-10 ohms. But then, that would be an extra component added to the BOM.
      

      

      Regards,
      

      Yugel
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
				
						
						
				
				
		
		
      
			
		
      
	
      

      

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