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AD8366 Recommended for New Designs
The AD8366 is a matched pair of fully differential, low noise and low distortion, digitally programmable variable gain amplifiers (VGAs). The gain of each...
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AD8366 on Analog.com

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AD8336 Production
The AD8336 is a low noise, single-ended, linear in dB, general-purpose variable gain amplifier, usable over a large range of supply voltages. It features...
Datasheet
AD8336 on Analog.com

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Serial mode on AD8366 eval board

		            
		

			

									
					    RadaD
					
							


			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Jun 12, 2025 
				
			
			
		
    
		
     
				
		
    
		    		    
		    
		    		      		            		        
    Category: Hardware
    
    		        		            		    
    Product Number:  AD8366  
    
    		        		    		    	
			
    Does the AD8366-EVALZ support the devices serial mode? From the schematic it looks to me that pins BIT0/CS and BIT1/SDAT can only be connect to GND or VPOS via switches?
    
									
			                
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                 ad8366
                
                                                    
                 Analog Control Variable Gain Amplifiers (VGAs)
                
                                                    
                 hardware
                
                                                    
                 vga
                
                                                    
                 Fully Differential Amplifiers
                
                                        
                                            
                
                
                                        
                                            
                
                
                                        
                                            
                
                
                                        
                                            
                
                
                                
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      •  Analog Employees  
      
            
						
                            
            
            				
            
                on Jun 20, 2025 6:27 PM
            
                                    
					
      
	
      

		
		
      
					
      

      Hi David,
      

      the evaluation board supports parallel and serial mode operation. It appears that the eval board schematic is incorrect or at least incomplete as it does not include the digital header. 
      

      AD8366 is an old part. While it is still in full production, it you are starting a new design, I think that there are better parts that we can recommend. If you can give me some guidance on your needs and target specs (e.g. gain range, operating frequency, with/without programmable filtering, etc), I can recommend some better alternatives. 
      

      Best Regards
      

      Eamon
      

      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
				
				
				
		
		
      
			
		
      
	
      

      

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													0
							
			
				
									
							        
			
			
			
      •  Analog Employees  
      
            
						
                            
            
            				
            
                on Jun 20, 2025 6:27 PM
            
                                    
					
      
	
      

		
		
      
					
      

      Hi David,
      

      the evaluation board supports parallel and serial mode operation. It appears that the eval board schematic is incorrect or at least incomplete as it does not include the digital header. 
      

      AD8366 is an old part. While it is still in full production, it you are starting a new design, I think that there are better parts that we can recommend. If you can give me some guidance on your needs and target specs (e.g. gain range, operating frequency, with/without programmable filtering, etc), I can recommend some better alternatives. 
      

      Best Regards
      

      Eamon
      

      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
				
				
				
		
		
      
			
		
      
	
      

      

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