In the analog domain, where data acquisition is performed, a small amount of external noise can cause significant interference. For instance, a difference of 10mV of noise in the analog ground between a 12-bit A/D converter and the converter's driver amplifier can cause an 8LSB error. In contrast, digital systems can tolerate hundreds of millivolts of this type of error before intermittent problems start to occur. Finding the origin and then eliminating interfering noise in the analog systems such as the pressure sensor system discussed here or audio and video systems is a unique challenge. Of particular interest is the "slow" system, such as sensors or audio, where designers are easily tempted to ignore problematic, high frequency, noise issues. This course delves into hardware and firmware noise reduction strategies for signal conditioning paths that have sensors. Noise topics such as conducted noise, device noise and radiated noise will be explored from the analog perspective. All these concepts can be immediately applied to Audio and Video systems as well.
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