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AD1865 Obsolete
The AD1865 is a complete, dual 18-bit DAC offering excellent THD+N and SNR while requiring no external components. Two complete signal channels are included...
AD1865 on Analog.com

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AD1865 N-K chip

		
	
				

			

									
					    whaleman
					
							

            
            			
				
									
											
			
			
				
			
			
			    	
			                    
                
				                on Jan 21, 2018 
				
			
			
		

		
		                     
				
        		

		    
		    		    
		    			

			    
I know this chip has been obsolete for some time, but I have a DAC that I had just finished upgrading around the DAC PCB and then the AD1865 chip went bad, either to over-voltage, static discharge, or just for being a fake.  

 
The only sources are in China for this chip at the moment and so there is quite a bit of fakery probably going on.

 
Is there another current chip in the same package that might work in its place?  I'd hate to waste the PCB for it if I can't find a straight fit replacement.

 
Thanks much.

 
whaleman

			

			
									
		                             
                        

    

                                            
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    •  Analog Employees  
    •  Super User  
    
            
						
                            
            
            				
            
                on Jan 22, 2018 3:42 PM
            
            
						
			            		
    
		
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    Hello whaleman,
    
 
    Unfortunately there is no drop-in replacement for the part. You would have to modify the design to work with a newer DAC.
    
 
    Dave T
    
			
    

		
			
	      

		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
						
				
						
				
				
		
		
    
			
		
    
	
    

    

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                on Jan 22, 2018 4:47 PM
            
            
						
			            		
    
		
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    Thank you Dave!
    
 
          From: DaveThib <analog@analog-vm.hosted.jivesoftware.com>
    
 
     To: ALEX RIVERA <arivera911@yahoo.com> 
    
 
     Sent: Monday, January 22, 2018 7:43 AM
    
 
     Subject: Re:  - Re: AD1865 N-K chip
    
 
        
    
 
     #yiv9720310906 * #yiv9720310906 a #yiv9720310906 body {font-family:Helvetica, Arial, sans-serif;}#yiv9720310906 #yiv9720310906 h1, #yiv9720310906 h2, #yiv9720310906 h3, #yiv9720310906 h4, #yiv9720310906 h5, #yiv9720310906 h6, #yiv9720310906 p, #yiv9720310906 hr {}#yiv9720310906 .yiv9720310906button td {} 
    
 
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    Re: AD1865 N-K chip
    
 
    reply from DaveThib in Audio - View the full discussionHello whaleman, Unfortunately there is no drop-in replacement for the part. You would have to modify the design to work with a newer DAC. Dave T
    
 
    
  
    
   
    
    
     
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