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MAX31855 EMI\ESD issue tracking



		

			

									
					    Alex_chang
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Apr 15, 2014 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    Hi,Sir:
    
 
    MAX31855 EMI\ESD issue tracking as below description.
    
 
    1. The oscilloscope show sawtooth wave between GND and T+.
    
 
    2. The oscilloscope show   pulse wave between GND and T-.
    
 
    3. OS output display abnormal temperature reading when the figure touch the end of thermo couple . 
    
 
    How to solve the question?(by IC 、 OPA or other method)
    
 
    We are look forward to anyone reply.
    
 
    Many thanks and wish you all the best!!
    
								
    

				
							MAX31855.pdf