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App Report

Understanding operational amplifier specifications: Selecting the right operational amplifier for a specific application requires having design goals clearly in mind along with a firm understanding of what the published specifications mean. This application report assists designers with interpreting data sheet specifications for this type of activity.

The report opens with background information. First, introductory topics on the basic principles of amplifiers are presented, including the ideal op amp model. As an example, two simple amplifier circuits are analyzed using the ideal model. Second, a simplified circuit of an operational amplifier is discussed to show how parameters arise that limit the ideal functioning of the operational amplifier.

The report then focuses on op amp specifications. Texas Instruments' data book, Amplifiers, Comparators, and Special Functions, is the basis for the discussion on op amp specifications. Information is presented about how TI defines and tests operational amplifier parameters.

For complete information, order: Data Book (SLYD011A and SLYD012A). See Related Product Information