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ADUM3190 Production
The ADuM3190 is an isolated error amplifier based on Analog Devices, Inc., iCoupler® technology. The ADuM3190 is ideal for linear feedback power supplies...
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ADUM3190 on Analog.com

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ADUM3190's output  linearies change board by board

		            
		

			

									
					    ABAYAR436
					
							


			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Apr 8, 2024 
				
			
			
		
    
		
     
				
		
    
		    		    
		    
		    		      		            		        
    Category: Hardware
    
    		        		            		    
    Product Number:  ADUM3190  
    
    		        		    		    	
			
    Hi,
    

    We are using ADUM3190 isolated amplifier for High voltage sensing but we are facing non lienar outputs board by board.
    

    Here is our schematic design and our output results.
    

    Can you please review desing and give us feedback ?
    

     
    

    


    

BOARD_3 HIGH VOLTAGE
BOARD_4 HIGH VOLTAGE

    

    
INPUT
DIVIDE
COMP
EOUT
DIVIDE
COMP
EOUT

    

    
0
0
0
0.036
0
0
0

    

    
10
0.030
0.058
0.090
0.030
0.058
0.044

    

    
20
0.060
0.119
0.149
0.060
0.118
0.105

    

    
30
0.090
0.179
0.209
0.090
0.178
0.167

    

    
40
0.120
0.240
0.269
0.121
0.238
0.228

    

    
50
0.151
0.300
0.330
0.151
0.299
0.290

    

    
60
0.181
0.360
0.390
0.181
0.359
0.352

    

    
70
0.211
0.420
0.451
0.211
0.419
0.414

    

    
80
0.241
0.485
0.512
0.241
0.480
0.476

    

    
90
0.272
0.541
0.572
0.271
0.540
0.537

    

    
100
0.302
0.602
0.633
0.302
0.600
0.600

    

    
110
0.332
0.662
0.694
0.332
0.661
0.661

    

    
120
0.362
0.722
0.755
0.362
0.721
0.724

    

    
130
0.392
0.783
0.816
0.392
0.781
0.785

    

    
140
0.423
0.843
0.877
0.422
0.842
0.848

    

    
150
0.453
0.904
0.937
0.453
0.902
0.910

    

    
160
0.483
0.964
0.999
0.483
0.963
0.972

    

    
170
0.513
1.025
1.059
0.513
1.023
1.035

    

    
180
0.543
1.085
1.120
0.543
1.083
1.096

    

    
190
0.574
1.145
1.181
0.573
1.144
1.158

    

    
200
0.604
1.206
1.242
0.603
1.204
1.220

    

    
210
0.634
1.266
1.302
0.634
1.265
1.283

    

    
220
0.664
1.327
1.363
0.664
1.325
1.345

    

    
230
0.694
1.387
1.424
0.694
1.385
1.406

    

    
240
0.724
1.448
1.485
0.725
1.446
1.469

    

    
250
0.755
1.508
1.546
0.755
1.506
1.530

    

    
260
0.786
1.569
1.607
0.785
1.567
1.593

    

    
270
0.816
1.629
1.668
0.815
1.627
1.654

    

    
275
0.831
1.660
1.698
0.831
1.658
1.686

    

    
280
0.846
1.690
1.728
0.846
1.688
1.716

    

    
290
0.876
1.750
1.789
0.876
1.748
1.779

    

    
300
0.908
1.811
1.850
0.907
1.809
1.840

    

    
310
0.937
1.872
1.911
0.937
1.869
1.903

    

    
320
1.067
1.932
1.972
0.967
1.930
1.965

    

    
330
1.097
1.993
2.032
0.997
1.990
2.026

    
    

    

    

    

    

    
									
			                
    Thread Notes   
    
        
    
        
            
		
    

				
						
        

    
    Tags: 
                                            
                 amplifiers
                
                                                    
                 hardware
                
                                                    
                 adum3190
                
                                                    
                 isolation amplifiers
                
                                
            
    
    
    

		
    
			
						
									
												
			
			
                        
                                    
                        
                        
                        
            
			            
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    
















    
	
    
	
    
					



			








	
	
	
	



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													0
							
			
				
									
							        
			
			
			
        
            
						
                            
            
            				
            
                on Apr 15, 2024 2:30 PM
            
                                    
												
						in reply to AAlessandro
					
									
        
	
        

		
		
        
					
        Hi Alessandro,
        

        Actually we have six different board which have these IC's. IC's analog values have been reading by Microcontroller. All of IC's show different characteristics at different voltage levels. In this situation every board has different calibration data and different codes. We were expecting all IC's have same characteristics but they are not.
        

        Is it about this output gain characteristic?
        

         
        

        Thanks for your interests.
        
			
        

		
			
	      

		
		
	
        
	
        
		
        
			
		
        
	
        
	
        
		
						
						
				
						
				
				
		
		
        
			
		
        
	
        

        

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