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Products Mentioned

AD5940 Recommended for New Designs
The AD5940 and AD5941 are high precision, low power analog front ends (AFEs) designed for portable applications that require high precision, electrochemical...
Datasheet
AD5940 on Analog.com

Associated Drivers

AD8233 Recommended for New Designs
The AD8233 is an integrated signal conditioning block for electrocardiogram (ECG) and other biopotential measurement applications. It is designed to extract...
Datasheet
AD8233 on Analog.com

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AD5940 custom pcb

		
	
				

			

									
					    tshivam
					
							

            
            			
				
									
											
			
			
				
			
			
			    	
			                    
                
				                on Apr 1, 2026 
				
			
			
		

		
		                     
				
        		

		    
		    		    

		      		            		        
Category: Hardware

    		        		            		    
Product Number:  AD5940  

    		        		    		    

		    		    
		    			

			    
We wish to develop a custom pcb using AD5940, our aim is just to reproduce the AD5940 EVAL BIOZ development board. Please tell me how to proceed about it? We followed the same schematic available on analog devices website and developed a baord removing the ECG AD8233 chip and rest everything is same like AD5940 evaluation board, still the board is not working. Can you what we shall do to troubleshoot the issue.

			

			
									
		                             
                        

    

                                            
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                on Apr 7, 2026 3:01 AM
            
            
						
			            		
    
		
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    Please help in this matter i am getting following results using our developed custom board.

    For 1Kohm i did 3 runs of 50 samples each at 100 Hz. I am sharing the results as below: Run 1 : 936 ohm and phase -74.0261 Run 2: 937.757 and phase -74.0053 Run 3: 938.261 and -73.9971. For 1Kohm at 1000 Hz. I am sharing the results as below: 1465.65 ohm and phase 17.0411 For 1Kohm at 10000 Hz. I am sharing the results as below: 5227.35 ohm and phase 73.6968 For 1Kohm at 100000 Hz. I am sharing the results as below: 53177.7 ohm and phase 84.3228 For 4.6 Kohm i did 2 runs of 50 samples each at 100 Hz. I am sharing the results as below: Run 1 : 6060.08 ohm and phase -5.73 Run 2: 6041.67 and phase -6.34892 For 4.6 Kohm at 1000 Hz. I am sharing the results as below: Run 1 : 6167.08 ohm and phase 21.8409 For 4.6 Kohm at 10000 Hz. I am sharing the results as below: Run 1 : 24098.159 ohm and phase 75.549 Run 1 : 24046.6 ohm and phase 75.5263 For 4.6 Kohm at 100000 Hz. I am sharing the results as below: Run 1 : 296028 ohm and phase 83.9565
    
			
    

		
			
	      

		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
						
				
						
				
				
		
		
    
			
		
    
	
    

    

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    •  Analog Employees  
    
            
						
                            
            
            				
            
                on May 4, 2026 9:15 AM
            
            
						
			            		
    
		
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    Mentioning   and   for assistance.  Thank you, Geneva
    
			
    

		
			
	      

		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
						
				
						
				
				
		
		
    
			
		
    
	
    

    

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