Products Mentioned

AD5933 Production
The AD5933 is a high precision impedance converter system solution that combines an on-board frequency generator with a 12-bit, 1 MSPS, analog-to-digital...
Datasheet
AD5933 on Analog.com

Associated Drivers

AD5399 Obsolete
The AD5399 is a serial-input, dual 12-bit digital-to-analog converter that accepts two's complement digital coding. An internal voltage reference generates...
Datasheet
AD5399 on Analog.com

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EVAL-AD5933EBZ setup for four electrodes

		
	
				

			

									
					    juditaf
					
							

            
            			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Oct 3, 2016 
				
			
			
		
    
		
		                    	    
    
        	    
    Thread Summary
    
                The user is trying to expand the EVAL-AD5933EBZ to use a tetrapolar electrode system for in vitro bio-impedance measurements of human blood. The final answer suggests that the question has been resolved offline or through a multi-part answer, and the user is advised to post a new question if further assistance is needed. For in vitro measurements, an external AFE is recommended to limit current or DC voltage to minimize cell degradation, and a relevant Analog Dialogue paper is suggested for additional guidance.
                        	    
    
                
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    Hi,
    
 
    I am working with EVAL-AD5933EBZ, and I am trying to expand it as to use tetrapolar electrode system for bio-impedance measurement. Can anyone help me with that?
    
 
    As far as I have read, the setup to expand the AD5933 should be something like the picture I am attaching.
    
 
    I do not know if there is an easier setup using evaluation board.
    
 
    In case that it has to be like the picture, any suggestions on the values for resistances?
    
 
    Thanks for your help!
    
			
    
			
									
		                             
                        

    
    
                                            
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