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AD5721R Output Range vs Supply Voltage



		

			

									
					    JuliaTruchsess
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Aug 9, 2020 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    I can't find an "output swing" vs supply voltage spec for the AD5721R, only a list of its selectable output ranges and its max/min supply voltages.
    

    My question is how much if any "overhead" do I need to provide in the analog supplies in order to get a particular output. Say I want ±5V output, I assume I cannot just use a ±5V supply, I need to provide, say, a ±7V supply, right?
    

    Thanks,
    

    Julia
    
									
			        
		
    

				
						
        

    
    Tags: 
                                            
                 Single-Channel Voltage Output D/A Converters
                
                                                    
                 Voltage Output D/A Converters
                
                                                    
                 ad5721r
                
                                
            
    
    
    

		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    
















    
	
    
	
    
					



			








	
	
	
	



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													+1
							
			
				
									
							        
			
			
			
      •  Analog Employees  
      •  Super User  
      
            
						
                            
            
            				
            
                on Aug 9, 2020 11:59 PM
            
            
					
      
	
      

		
		
      
					
      Hi Julia, 

      

      JuliaTruchsess said:
      My question is how much if any "overhead" do I need to provide in the analog supplies in order to get a particular output. Say I want ±5V output, I assume I cannot just use a ±5V supply, I need to provide, say, a ±7V supply, right?
      

      There is a "headroom" spec with load and range conditions on page 4 of the datasheet. Basing on that, +/- 6V supply should be enough for your +/-5V Output. 

      

      Best regards,
      Ian
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
				
						
						
				
				
		
		
      
			
		
      
	
      

      

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													+1
							
			
				
									
							        
			
			
			
      •  Analog Employees  
      •  Super User  
      
            
						
                            
            
            				
            
                on Aug 9, 2020 11:59 PM
            
            
					
      
	
      

		
		
      
					
      Hi Julia, 

      

      JuliaTruchsess said:
      My question is how much if any "overhead" do I need to provide in the analog supplies in order to get a particular output. Say I want ±5V output, I assume I cannot just use a ±5V supply, I need to provide, say, a ±7V supply, right?
      

      There is a "headroom" spec with load and range conditions on page 4 of the datasheet. Basing on that, +/- 6V supply should be enough for your +/-5V Output. 

      

      Best regards,
      Ian
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
				
						
						
				
				
		
		
      
			
		
      
	
      

      

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