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The ADM690-ADM695 family of supervisory circuits offers complete single chip solutions for power supply monitoring and battery control functions in microprocessor...
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ADM693 on Analog.com

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How does ADM693 shift the watchdog-timeout to?

		
	
				

			

									
					    Kaos
					
							

            
            			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Sep 29, 2015 
				
			
			
		
    
		
		                    	    
    
        	    
    Thread Summary
    
                The user inquired about the watchdog timeout period for the ADM693 under varying VCC and temperature conditions. The support engineer provided bench test results for three samples, indicating that the timeout period varies with VCC and temperature. However, due to the age of the part, comprehensive design data and guaranteed specifications are unavailable. The engineer suggested using the ADM8693 for a well-defined watchdog timeout range.
                        	    
    
                
                     AI Generated Content
                
    	    
    
             
				
        		
    
		    
		    		    
		    			
    
			    
    Dear Sir/Madam,
    
 
    As for your ADM693, our customer asked the following question to us.
    
 
    I could not catch the answer on your datasheet.
    
 
    So please let me know your comment.
    
 
    The watchdog timeout period is showed min 1sec to max 2.25sec when VCC = 5V, TA = +25C.
    
 
    Q-1
    
 
    If VCC is shifted to 4.5V or 5.5V, then how should we think this value shifting?
    
 
    eg; when 4.5V, shift min 0.9sec to max 2.15sec ? Otherwise same value?
    
 
    Q-2
    
 
    If TA is shifted to 0 to 70C, then how should we thinkthis value shifting?
    
 
    eg; when around temp=0C, shift min 0.9sec to max 2.15sec ? Otherwise same value?
    
 
    Please let me know the trend when the above conditions.
    
 
    My expected reply as following chart if you have.
    
 
    Thanks Kaos
    
			
    
			
									
		                             
                        

    
    
                                            
                 Supervisory Circuits
                
                                                    
                 Single-Supply Monitors
                
                                                    
                 adm693
                
                                
            
    
    
    
		
    

				
				        
        		
    
			
						
									
												
			
			
                        
                                    
                        
                                                    
                        
            
			            
						
						
			
			
			
			
		
    

        
        
        
    
					
    
			
    


    
















    
	
    
	
    
					



			








	
	
	
	



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                on Oct 15, 2015 2:01 PM
            
            
						
			            		
        
		
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        Hi Ren,
        
 
        I explained your answer to our customer.
        
 
        But he could not satisfy your answer.
        
 
        Again The info Customer want to know
        
 
        1)the value of design WD-timeout
        
 
        Not only one sample, he needs the design value that was brought from a lot of samples.
        
 
        The value needs to include the individual variation of ADM693.
        
 
        Do you have this value?
        
 
        2)failed ADM693
        
 
        Customer met one failed ADM693 that was 2.28sec/4.5V at 25C tempereture WD timeout.
        
 
        So he needs the design data that this failed is real fail or not.
        
 
        Any comment?
        
 
        Thanks Kaos
        
			
        

		
			
	      

		
		
	
        
	
        
		
        
			
		
        
	
        
	
        
		
						
						
				
				
				
				
		
		
        
			
		
        
	
        

        

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                on Oct 15, 2015 2:01 PM
            
            
						
			            		
          
		
										0
					
	
          

		
		
          
		
          
                                
                                                            
          
					
          Hi Ren,
          
 
          I explained your answer to our customer.
          
 
          But he could not satisfy your answer.
          
 
          Again The info Customer want to know
          
 
          1)the value of design WD-timeout
          
 
          Not only one sample, he needs the design value that was brought from a lot of samples.
          
 
          The value needs to include the individual variation of ADM693.
          
 
          Do you have this value?
          
 
          2)failed ADM693
          
 
          Customer met one failed ADM693 that was 2.28sec/4.5V at 25C tempereture WD timeout.
          
 
          So he needs the design data that this failed is real fail or not.
          
 
          Any comment?
          
 
          Thanks Kaos
          
			
          

		
			
	      

		
		
	
          
	
          
		
          
			
		
          
	
          
	
          
		
						
						
				
				
				
				
		
		
          
			
		
          
	
          

          

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