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ADA4945-1 Recommended for New Designs
The ADA4945-1 is a low-noise, low-distortion, fully differential amplifier with two selectable power modes. The device operates over a broad power supply...
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ADA4945-1 on Analog.com

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Design Inquiry

		
	
				

			

									
					    AbhishekManoj
					
							

            
            			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Nov 6, 2025 
				
			
			
		
    
		
		                    	    
    
        	    
    Thread Summary
    
                The user inquired about using the ADA4945-1ACPZ-R2 as an input amplifier for the AD7768 ADC to achieve a +/-4V output range with single-ended input and differential output. The final answer indicated that the query was a duplicate and directed the user to another thread for the solution. No specific gain or supply voltage configuration was provided in the final answer.
                        	    
    
                
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    Category: Hardware
    
    		        		            		    
    Product Number:  ADA4945-1ACPZ-R2, ADA4945-1 
    
    		        		    		    
    
		    		    
		    			
    
			    
    Hi Team,
    

    I'm planning to use ADA4945-1ACPZ-R2 as input amplifier for my ADC AD7768.
    

    My requirement output range of the Amplifier is +/-4V as it our requirement of the ADC.
    

    For the above input voltage range can i use the  AVDD1 - 5V, AVDD2 - 5V, IOVDD - 1.8V for ADC with amplifier supply voltages +5V for Vs+ & -5V for Vs-.
    

    Also want should be gain should i provide to the amplifier for getting +/-4V output range. I requirement is that input will be singled ended signals and output needs to be differential.
    

    Please provide a suggestion for my design.
    

    

    Regards,
    

    Abhishek
    
			
    
			
									
		                             
                        

    
    
                                            
                 hardware
                
                                                    
                 ADA4945-1
                
                                                    
                 Fully Differential Amplifiers
                
                                                    
                 Differential Amplifiers and ADC Drivers
                
                                                    
                 ADA4945-1ACPZ-R2
                
                                
            
    
    
    
		
    

				
				        
        		
    
			
						
									
												
			
			
                        
                                    
                        
                        
                        
            
			            
						
						
			
			
			
			
		
    

        
        
        
    
					
    
			
    


    
















    
	
    
	
    
					



			








	
	
	
	



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