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AD9083 Recommended for New Designs
The AD9083 is a 16-channel, 125 MHz bandwidth, continuous time S-? (CTSD) ADC. The device features an on-chip, programmable, single-pole antialiasing filter...
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AD9083 on Analog.com

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EVAL-AD9083 & ADS8-V3EBZ : The operation of the evaluation board is unstable.

		                	    

        	    
Thread Summary

                The user is experiencing inconsistent startup of the EVAL-AD9083 when used with the ADS8-V3EBZ evaluation board. The 12V FMC supply LED lights up briefly but then goes out, preventing normal operation. The final answer suggests checking the 12V supply, the Power Monitor ADM1178-1ARMZ, and the MOSFET gate voltage, as well as measuring current through R338 and inspecting for intermittent solder connections or short circuits. The user confirmed the issue occurs upon turning on the ADS8-V3EBZ and has reinstalled the ACE software and drivers.
                        	    

                
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					    AkiraO
					
							


			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on May 13, 2025 
				
			
			
		
    
		
     
				
		
    
		    		    
		    
		    		      		            		        
    Category: Hardware
    
    		        		            		    
    Product Number:  AD9083  
    
    		        		    		    	
			
    Hi,
    

    I'm DFAE. I have a question from my customer. 
    

    My customer is evaluating the AD9083 using EVAL-AD9083 and ADS8-V3EBZ. However, after powering on and starting up the ADS8-V3EBZ, when trying to operate the EVAL-AD9083 from the GUI, the LED on the EVAL-AD9083 lights up once or twice, then goes out and stops working. If you repeat the same thing several dozen times, the LED on the EVAL-AD9083 may stay on and it may operate normally. 
    

    Once it operates normally, it will continue to operate normally unless the power is turned off. But, if the power is turned off, it will not start normally again. 
    

    The AC power supply that came with the evaluation kit is used as the power supply. The latest GUI, etc. are downloaded from the web and used. 
    

    What could be the reason why it rarely operates normally? Also, are there any ways to improve this?
    

    Best Regards,
    

    Akira
    

    
									
			                
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    Tags: 
                                            
                 hardware
                
                                                    
                 High Speed A/D Converters >10 MSPS
                
                                                    
                 Standard High Speed A/D Converters
                
                                                    
                 AD9083
                
                                
            
    
    
    

		
    
			
						
									
												
			
			
                        
                                    
                        
                        
                        
            
			            
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    
















    
	
    
	
    
					



			


				
	









	
      
	

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      •  Analog Employees  
      
            
						
                            
            
            				
            
                on May 14, 2025 11:29 PM
            
                                    
					
      
	
      

		
		
      
					
      Hi  
      

      Kindly give time for the product owner ( ) to look into this and provide their response.
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      

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      •  Analog Employees  
      
            
						
                            
            
            				
            
                on May 16, 2025 4:25 AM
            
                                    
												
						in reply to JAlipio
					
									
      
	
      

		
		
      
					
      Hi  ,
      

      Is the behavior of unstable operation of eval board happen during loading of the plug in from the ACE software or upon turning on of ADS8V3? Have they tried uninstalling the ACE software and necessary drivers?
      

      Thanks,
      

      jmoreno5
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      

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                on May 18, 2025 8:36 PM
            
                                    
												
						in reply to jmoreno5
					
									
        
	
        

		
		
        
					
        Hi jmoreno5,
        

        It's upon turning on of ADS8V3. Yes, the customer uninstalled the ACE and necessary drivers and then he re-installed them. 
        

        Akira
        
			
        

		
			
	      

		
		
	
        
	
        
		
        
			
		
        
	
        
	
        
		
						
						
				
						
				
				
		
		
        
			
		
        
	
        

        

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                on Jun 3, 2025 12:43 AM
            
                                    
												
						in reply to AkiraO
					
									
          
	
          

		
		
          
					
          Hi,
          

          Could you please support this issue?
          

          Akira
          
			
          

		
			
	      

		
		
	
          
	
          
		
          
			
		
          
	
          
	
          
		
						
						
				
						
				
				
		
		
          
			
		
          
	
          

          

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                on Jun 26, 2025 4:33 AM
            
                                    
					
            
	
            

		
		
            
					
            Hi ,
            

            I may suggest some troubleshooting steps. It sounds like the LED you're referring to is the one connected to the 12V FMC supply.
            

            I would suggest taking a look at the schematic for the ADS8-V3EBZ board. The 12V supply goes through a MOSFET that is controlled by a Power Monitor ADM1178-1ARMZ.
            

             
            

            See if you can measure the voltages at the pins of these devices going backwards from the FMC connector. Is the 12V preset at TP10 (also try unplugging the AD9083 board and see if the voltage works fine after)? Is the VIN_12V input okay? Is the ALERTB pin asserted? What is the voltage at the MOSFET gate? See if you can measure the current through this line (R338 looks like a current sensing resistor, so the voltage drop accross it can be used). If there is overcurrent, maybe there's a short circuit somewhere on 1 of the boards.
            

            You could also try to measure with an oscilloscope if there are signals going through to the SDA and SCL pins.
            

            Also inspect these devices visually. It's unlikely, but sometimes there can be an intermittent solder connection or a particle shorting out some pins.
            

            If all else fails, you could try (at your own risk) to bypass the power monitor by soldering a wire directly from VIN_12V (provided the voltage there is okay) to FMC_12V, but you need to make sure there is no overcurrent or other conditions that could damage the board or power supply.
            

            

            There is also an LED for the 3.3V PG_C2M pin, but there's less that could be going wrong there. Still, you could use the same troubleshooting steps for that.
            

            

            Kind regards,
            

            Cekobidonq
            
			
            

		
			
	      

		
		
	
            
	
            
		
            
			
		
            
	
            
	
            
		
						
				
						
						
				
				
		
		
            
			
		
            
	
            

            

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