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Check for analogue IC sensitivity

Posted: 16 Jun 2008     Print Version  Bookmark and Share

Keywords:analogue  IC design  circuit sensitivity 

All circuits, analogue or digital, have characteristics dependent on the values of their component parts. Invariably, these parts are non-ideal in many ways. Even their most fundamental characteristics (e.g. a resistor's resistance) will be at least slightly different than the specified value. These characteristics can also vary over time and environmental conditions.

The wise circuit designer learns how to analyse the sensitivities of circuits' critical characteristics to the variations in the components. With this knowledge, the designer can make better decisions on how to best trade off performance and cost. Deeper use of sensitivity analysis can lead designers to modify circuit topologies, or make completely different choices to optimise these trade-offs.

Generally, circuit sensitivity analysis is not part of a university EE program. Fortunately, this important topic is easy to learn and use and is covered in circuit design books, especially those focusing on filter design.

View the PDF document for more information.

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