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ADR827中运算放大器是什么型号  如果要芯片直接产生负电压要换成什么型号放大器


		

			

									
						z15822944358@163.com
					
							

			
				
									
											
							 		
		        	            							
			
			    	
			                    
                
				                on Apr 3, 2014 
				
			
			
		


				
		

			
如题   新手完全不明白啊