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AD22105 Production
The AD22105 is a solid state thermostatic switch. Requiring only one external programming resistor, the AD22105 can be set to switch accurately at any...
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AD22105 on Analog.com

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AD22105 Simple temperature control



		

			

									
					    bpack
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Sep 26, 2016 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    I have recently been developing electric heating pad. My product is a very simple, I run 5v through a circuit to generate heat. Currently I am using a bimetallic switch that opens when temperatures exceed 45C.  I am currently looking for alternative methods that will be low cost but provide higher levels of accuracy and reliability.  I was thinking surface mounting AD22105  my heating pad and use that as a temperature controller.  A concern of mine is that it wont provide adequate output voltage/current.  I was wondering if I could get your feedback on if the  AD22105 would work for my application or perhaps you have another product/products that would help provide me with a low cost temperature controller.
    
 
     
 
    
 
    
  Thanks,
 
    
									
			        
		
    

				
						
        

    
    Tags: 
                                            
                 Temperature Sensor and Control Devices
                
                                                    
                 ad22105
                
                                                    
                 Temperature Switches
                
                                
            
    
    
    

		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    


	
    
		
	
    















    
	
    
	
    
					



			








	
	
	
	



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      •  Analog Employees  
      
            
			                            
                                                                                                                        
            
				
			
            
					
      
	
      

		
		
      
					
      Hi,
      
 
      Apologies for the delayed response. The rest of our Temperature Switches offerings can be found here. You might want to look at the ADT6401/ADT6402, it's cheaper than the AD22105 but the AD22105 is still more accurate. The trip point setting for the ADT6401/ADT6402 is easier; it is pin-selectable, no need for external resistor. The overtemp outputs are usually in the order of a few mAs, with the AD22105 capable of pulling down with 10 mA at a voltage of about 375 mV.
      
 
      The E grade of the TMP01 has better accuracy, can sink 20mA with at a voltage of about 600mV (typical). You might want to check on Figure 7 of the TMP01 TPCs. It is more expensive than the other 2 options above.
      
 
      Hope this helps.
      
 
      Regards,
      
 
      Karen
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
				
						
						
				
				
		
		
      
			
		
      
	
      

      

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Reply

      


    • 
	
      



	
			
		
	



      
	
      
		
      
							
					
      
		
      
			
													0
							
			
				
									
							        
			
			
			
      •  Analog Employees  
      
            
			                            
                                                                                                                        
            
				
			
            
					
      
	
      

		
		
      
					
      Hi,
      
 
      Apologies for the delayed response. The rest of our Temperature Switches offerings can be found here. You might want to look at the ADT6401/ADT6402, it's cheaper than the AD22105 but the AD22105 is still more accurate. The trip point setting for the ADT6401/ADT6402 is easier; it is pin-selectable, no need for external resistor. The overtemp outputs are usually in the order of a few mAs, with the AD22105 capable of pulling down with 10 mA at a voltage of about 375 mV.
      
 
      The E grade of the TMP01 has better accuracy, can sink 20mA with at a voltage of about 600mV (typical). You might want to check on Figure 7 of the TMP01 TPCs. It is more expensive than the other 2 options above.
      
 
      Hope this helps.
      
 
      Regards,
      
 
      Karen
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
				
						
						
				
				
		
		
      
			
		
      
	
      

      

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