Products Mentioned

AD7768 Recommended for New Designs
The AD7768/AD7768-4 are 8-channel and 4-channel 24-bit, simultaneous sampling, sigma-delta (Σ-Δ) analog-to-digital converters (ADCs) with power scaling...
Datasheet
AD7768 on Analog.com

Associated Drivers

ADA4841-1 Production
The ADA4841-1 is a unity gain stable, low noise and distortion, rail-to-rail output amplifier that has a quiescent current of 1.5 mA maximum. In spite...
Datasheet
ADA4841-1 on Analog.com

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How to use daisy-chaining of AD7768?

		
	
				

			

									
					    JasonChien
					
							


			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Mar 23, 2016 
				
			
			
		
    
		
		                     
				
        		
    
		    
		    		    
		    			
    
			    
    Dear Sir:
    
 
                   How to used daisy-chaining of AD7768? How to connection? Dout1=>Dout 6 and Dout0=> Dout7 or Dout1=>Dout7 and Dout0=> Dout6? BTW, I reference schematic of AD7768 EVB and I have a question as can I save reference buffer ADA4841-1 in my circuit?
    
 
    
 
    
			
    
			
									
		                             
                        

    
    
                                            
                 Operational Amplifiers (Op Amps)
                
                                                    
                 amplifiers
                
                                                    
                 Precision Op Amps (Vos ≤1mV & TCVos ≤2uV/C)
                
                                                    
                 Simultaneous Sampling A/D Converters
                
                                                    
                 ADA4841-1
                
                                        
                                            
                
                
                                        
                                            
                
                
                                
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      •  Analog Employees  
      
            
						
                            
            
            				
            
                on Mar 28, 2016 7:26 PM
            
            
						
			            		
      
		
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      Hi JasonChien,
      
 
      When using the part in daisy-chain mode, the interface depends on the FORMATx pins as shown on Table 28 of the datasheet. In the information you provided, it is clear that the FORMATx pins are configured as "01". In this configuration, connect DOUT0 to DOUT6 and DOUT1 to DOUT7.
      
 
      Using an external reference drive amplifier such as the ADA4841-1 is recommended to have the best performance at higher sampling rates. You can opt to remove it in your circuit at the expense of performance at higher sampling rates.
      
 
      Regards,
      
 
      RC
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      

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                on Aug 2, 2018 11:24 AM
            
            
						
			            		
        
		
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        This question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.

        Thank you,
        EZ Admin
        
			
        

		
			
	      

		
		
	
        
	
        
		
        
			
		
        
	
        
	
        
		
						
				
						
						
				
				
		
		
        
			
		
        
	
        

        

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