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Maintaining Accuracy with Small Magnitude Signals | Cypress Semiconductor

Maintaining Accuracy with Small Magnitude Signals

Last Updated: 
Jan 31, 2011

In today’s embedded system applications, whenever data is read from an interfacing device, somewhere in the data path processing of analog signals certainly comes into picture. Perhaps there is a touch interface detecting changes in current because of variation in the capacitance of the panel.  For an industrial application, there may be a need to control the temperature by measuring voltage due to change in thermal or transducer’s resistance or by detecting the position of a metal and measuring the EMF because of changing magnetic fields or inductance. The underlying principle in each of these examples is to detect/measure a change in the electrical quantity because of the varying electrical properties like the R, L, or C of transducers.