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How to overwrite the MSPAN HW setting?

		
	
				

			

									
					    DACs
					
							

            
            			
				
									
											
			
			
				
			
			
			    	
			                    
                
				                on Mar 23, 2026 
				
			
			
		

		
		                     
				
        		

		    
		    		    

		      		            		        
Category: Hardware

    		        		            		    
Product Number:  LTC2664  

    		        		    		    

		    		    
		    			

			    
Hi


In the schematic the MSP0,1,2 Pins are connected to 5V-0V-0V, which represents a configuration of +/-5V o/p range with mid-scale Reset Code. 


Now based on the application change, we would like to change the o/p range to 0V to 5V with Zero-scale reset code.


Can this be done without changing (through rework) the HW setting of the MSP0,1,2 Pins at the board?


I am trying to understand whether the the Hard wired MSPN setting be overwritten by the Software? if so how?


I think driving the CLR/  would help to get the scale as per the reset code given in Table:4 in that particular MSPAN setting and this is not to change the MSPAN setting?


Looking forward some clarity here on this need.




Regards,


Felix.

			

			
									
		                             
                        

    

                                            
                 D/A Converters (DAC)
                
                                                    
                 hardware
                
                                                    
                 ltc2664
                
                                                    
                 LTC2664HUH-16#PBF
                
                                
            

    
    
		


				
				        
        		

			
						
									
												
			
			
                        
                                    
                        
                        
                        
            
			            
						
						
			
			
			
			
		


        
        
        
    
					

			





















	

	

					



			








	
	
	
	



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    •  Analog Employees  
    
            
						
                            
            
            				
            
                on May 14, 2026 2:22 AM
            
            
						
			            		
    
		
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    Hi  
    

    You can change the output range by sending the write span sytax (page 18 of the datasheet).
    The MSPx pins define the span and output upon reset but you can configure it after.
    The MSPx pin setting will be overwritten by the software. You can view it such that the MSPx pins, (connected to the Power-On-Reset in the block diagram) will only be sampled on power-up.
    

    Hope this helps.

    Regards,
    Flynn
    
			
    

		
			
	      

		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
						
						
						
				
				
		
		
    
			
		
    
	
    

    

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    •  Analog Employees  
    
            
						
                            
            
            				
            
                on May 14, 2026 2:22 AM
            
            
						
			            		
    
		
										0
					
	
    

		
		
    
		
    
                                
                                                            
    
					
    Hi  
    

    You can change the output range by sending the write span sytax (page 18 of the datasheet).
    The MSPx pins define the span and output upon reset but you can configure it after.
    The MSPx pin setting will be overwritten by the software. You can view it such that the MSPx pins, (connected to the Power-On-Reset in the block diagram) will only be sampled on power-up.
    

    Hope this helps.

    Regards,
    Flynn
    
			
    

		
			
	      

		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
						
						
						
				
				
		
		
    
			
		
    
	
    

    

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