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AD9834 Production
The AD9834 is a 75 MHz low power DDS device capable of producing high performance sine and triangular outputs. It also has an on-board comparator that...
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AD9834 on Analog.com

AD8014 Production
The AD8014 is a revolutionary current feedback operational amplifier that attains new levels of combined bandwidth, power, output drive and distortion...
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AD8014 on Analog.com

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AD9834 + AD8014 DC return resistor

		
	
				

			

									
					    gt5659a
					
							

            
            			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Jun 24, 2020 
				
			
			
		
    
		
		                    	    
    
        	    
    Thread Summary
    
                The user asked if a DC return resistor to ground is needed between C11 and U7 for an AC-coupled signal from an AD9834 to an AD8014, with a maximum output frequency of 5 MHz. The final answer indicates that since the AD8014 is already bipolar, no additional resistor is necessary. It also notes that both Iout and IoutB should have reference resistors to ground, with R24 shown for IoutB.
                        	    
    
                
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    I have an AC-coupled signal coming from an AD9834 fed into an AD8014 as shown below.  
    

    

    Do I need a DC return resistor to ground between C11 and U7 and, if so, what value should I use?
    

    

    My maximum output frequency will be 5 MHz, sine wave only.
    

    

    Thanks for helping out this ME :)
    

    

     
    
			
    
			
									
		                             
                        

    
    
                                            
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