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DAC and AD8137

		
	
				

			

									
					    lzhang791
					
							

            
            			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Apr 2, 2019 
				
			
			
		
    
		
		                     
				
        		
    
		    
		    		    
		    			
    
			    
    DAC5672A的差分输出是-1V到+1V，希望放大到-5V到+5V。问一下后面放大的问题：如附件
    1.DAC和差分运放的匹配正确吗？R45需要吗？
    2.R46和R47的阻值怎么选？是1V除以20mA吗？放大5倍，R49是500欧？
    3.后端R56和R55是不是50欧啊?如果需要低通，再接C77和C78？
    谢谢 
    
			
    
			
									
		                             
                        

    
    
                                            
                 amplifiers
                
                                                    
                 Differential Amplifiers and ADC Drivers
                
                                                    
                 ad8137
                
                                                    
                 Single-Ended to Differential Amplifiers