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Multiplexer for Thermocouple-to-Digital Converter



		

			

									
						cdubs1495
					
							

			
				
									
											
							 		
		        	            							
			
			    	
			                    
                
				                on Jan 31, 2021 
				
			
			
		


				
		

		    		    
		    
		    	
			
Hi,




I’m looking for an analog switch/multiplexer to read 8 thermocouple channels with the Microchip MCP9600 thermocouple to digital converter. I’m already using the ADG714 in a variable gain amplifier on my PCB, so it’d be very convenient to order a 2nd one for multiplexing the thermocouple input. 




Before I do so I wanted to check on this forum: is the ADG714 good for multiplexing thermocouples, or would a different Analog Devices switch do a better job?


Thanks!

								


				
				
		

			
						
									
									
						
						
			
			
			
			
		


					

			





	










	

	

					



			








	
	
	
	



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                                 Analog Employees 
                                
                            
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                on Feb 1, 2021 4:49 PM
            
            
					
    
	
    

		
		
    
					
    Hi Collin,
    

    Looking at our product portfolio, ADG714 would be the best option in an 8 x SPST, single supply 5V range / dual supply ±2.5V switch application.
    

    There is also an ADG1414, that could be suitable for your application (8 x SPST) and has a wider voltage supply range (±15V, +12V), but has a larger Ron compared to the ADG714.
    

    Therefore I think the ADG714 you have selected is the right choice.
    

    Regards,
    

    Kevin
    
			
    

		
		
		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
				
						
						
				
				
		
		
    
			
		
    
	
    

    

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													+1
							
			
				
									
							        
            
                                                                                    
      
                            
    • 
                                 Analog Employees 
                                
                            
      • 
                        
     
                                                            			
			                            
                        
                on Feb 1, 2021 4:49 PM
            
            
					
    
	
    

		
		
    
					
    Hi Collin,
    

    Looking at our product portfolio, ADG714 would be the best option in an 8 x SPST, single supply 5V range / dual supply ±2.5V switch application.
    

    There is also an ADG1414, that could be suitable for your application (8 x SPST) and has a wider voltage supply range (±15V, +12V), but has a larger Ron compared to the ADG714.
    

    Therefore I think the ADG714 you have selected is the right choice.
    

    Regards,
    

    Kevin
    
			
    

		
		
		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
				
						
						
				
				
		
		
    
			
		
    
	
    

    

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