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ADBMS6830B Recommended for New Designs
The ADBMS6830B is a multicell battery stack monitor that measures up to 16 series-connected battery cells with a lifetime total measurement error (TME...
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ADBMS6830B on Analog.com

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isoSPI twisted pair reccomendation

		
	
				

			

									
					    EHR
					
							

            
            			
				
									
											
			
			
				
			
			
			    	
			                    
                
				                on May 7, 2026 
				
			
			
		

		
		                    	    

        	    
Thread Summary

                The user inquired about the specifications or recommendations for 22AWG PFA 600V twisted cables for the ADBMS6830B Eval Board and FSAE accumulator. The final answer recommends using CAT 5e cables, which have a characteristic impedance of 100 Ohm (±15 Ohm) and 1.4 to 2 turns per cm (50 to 70 turns per meter).
                        	    

                
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Category: Hardware

    		        		            		    
Product Number:  ADBMS6830  

    		        		    		    

		    		    
		    			

			    
Hi ADI Engineers,




We have received the ADBMS6830B Eval Board along with some 22AWG PFA 600V twisted cables. However, we cannot find the manufacturer’s part number/reference.


We would like to use Molex DuraClik terminals and twisted-pair cables for our FSAE accumulator. Since the datasheets do not specify specific isoSPI cable requirements, we are asking here to benefit the community (and because forum responses are often faster).


Could you provide the specifications or recommendations for these cables?




Thanks for your help!

			

			
									
		                             
                        

    

                                            
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    •  Analog Employees  
    
            
						
                            
            
            				
            
                on May 7, 2026 2:05 PM
            
            
						
			            		
    
		
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    Hi,
    We normally use CAT 5e cable as reference for isoSPI cables, they closely resemble the ones we used in the EV kit and works well with isoSPI. Since CAT 5e twisted pairs exhibit a tolerance of +/-15 Ohm with regards to their typical characteristic impedance of 100 Ohm (between 1 and 100 MHz), we have no concerns with signal reflections even if our termination circuit is not perfectly matched (to the exact Ohm). We normally use 1.4 to 2 turns per cm for our twisted pair, that is between 50 and 70 turns per meter.
    
			
    

		
			
	      

		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
						
						
						
				
				
		
		
    
			
		
    
	
    

    

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