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AD8513功耗問題

		
	
				

			

									
					    Yuhung
					
							

            
            			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Mar 20, 2015 
				
			
			
		
    
		
		                     
				
        		
    
		    
		    		    
		    			
    
			    
    Hi,
    
 
    我採用AD8513 14pin封裝
    
 
    以電源供應器兩個channel串聯供電
    
 
    V+為+12V, V-為-12V
    
 

    
 
    上電後, 兩個channel都是8mA
    
 
    回頭看了datasheet寫到~~
    
 
    POWER SUPPLY
    
 
    Supply Current/Amplifier (ISY)
    
 
    AD8513      2.75mA
    
 
    這是為什麼差這麼多阿? (線路只插了V+及V-, 其餘浮接)
    
 
    請先進們指導, 謝謝
    
			
    
			
									
		                             
                        

    
    
                                            
                 Operational Amplifiers (Op Amps)
                
                                                    
                 ad8513
                
                                                    
                 amplifiers
                
                                                    
                 Low Input Bias Current Op Amps (≤100 pA)