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There are terrible noise (sine wave) on the AD5560 FORCE OUTPUT   while operating



		

			

									
					    angelic
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Jan 8, 2019 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    Hello , mates
    

    I have a strange terrible problem when operating my AD5560 board. Eight AD5560s are powered by a common -5V power rail ( LTM8027 )  , and each chip's HCAVDD powered by 10.5V  independently generated from LTM4622A . 
    

    Now when I force voltage on a DUT ,  there are always serious noises added to a DC output , as the picture shown  below .
    

     
    

    Does anyone meet the same or similar case before ?
    

    I 'm looking for you ...
    

    

    Thank you all in advance .
    
								
    

				
				
		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    


	















    
	
    
	
    
					



			








	
	
	
	



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