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AD7606 Production
The AD7606/AD7606-6/AD7606-4 are 16-bit, simultaneous sampling, analog-to-digital data acquisition systems (DAS) with eight, six, and four channels, respectively...
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AD7606 on Analog.com

AD7608 Production
The AD7608 is an 18-bit, 8-channel simultaneous sampling, analog-to-digital data acquisition system (DAS). The part contains analog input clamp protection...
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AD7608 on Analog.com

AD7609 Production
The AD7609 is an 18-bit, 8-channel, true differential, simultaneous sampling analog-to-digital data acquisition system (DAS). The part contains analog...
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AD7609 on Analog.com

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AD760x RESET glitches



		

			

									
					    rehfi
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Jun 16, 2017 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    Hi,
    
 
    there are reports of AD760x devices suddenly returning only zeros due to glitches on the RESET line, like here or here, the latter unfortunately solved through a private message. We seem to have a similar problem.
    
 
    Are there any solutions available except for performing a reset before each conversion?
    
 
    Regards,
    
 
    rehfi
    
								
    

				
				
		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    


	
    
		
	
    















    
	
    
	
    
					



			








	
	
	
	



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                on Jul 21, 2017 2:13 PM
            
            
					
        
	
        

		
		
        
					
        Hi Jonathan,
        
 
        We are using the AD7609 on multiple data acquisition boards, with 2 to 4 devices doing simultaneous sampling. The board where we actually saw the problem is an isolated variant, with a Si8455 digital isolator driving the RESET line. The customer uses this board in a industrial PC for a hardware simulation application, but I don't know if it is used in a EMI susceptible environment.
        
 
        What about that 10.7 ns critical timing mentioned here?
        
 
        
  
        jcolao wrote:
        
  
        I will share this with my colleague and there are ways for a possible protection circuit.
        
 
        
 
        I would like to learn more about it...
        
 
        Regards,
        
 
        rehfi
        
			
        

		
		
		
		
	
        
	
        
		
        
			
		
        
	
        
	
        
		
						
						
				
						
				
				
		
		
        
			
		
        
	
        

        

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													0
							
			
				
									
							        
			
			
			
          
            
			                            
                        
                on Jul 21, 2017 2:13 PM
            
            
					
          
	
          

		
		
          
					
          Hi Jonathan,
          
 
          We are using the AD7609 on multiple data acquisition boards, with 2 to 4 devices doing simultaneous sampling. The board where we actually saw the problem is an isolated variant, with a Si8455 digital isolator driving the RESET line. The customer uses this board in a industrial PC for a hardware simulation application, but I don't know if it is used in a EMI susceptible environment.
          
 
          What about that 10.7 ns critical timing mentioned here?
          
 
          
  
          jcolao wrote:
          
  
          I will share this with my colleague and there are ways for a possible protection circuit.
          
 
          
 
          I would like to learn more about it...
          
 
          Regards,
          
 
          rehfi
          
			
          

		
		
		
		
	
          
	
          
		
          
			
		
          
	
          
	
          
		
						
						
				
						
				
				
		
		
          
			
		
          
	
          

          

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