This white paper outlines the fundamental role of a measurement chain, tracing the journey from physical variables to a digital signal suitable for input into a PC or microcontroller for visualization or further analysis. It provides a simplified explanation of how analog-to-digital (A/D) converters work, focusing on the general function and common types. Additionally, it covers the essential signal pre-processing steps required to ensure accurate digital conversion, along with potential errors that can arise throughout the process.

Key topics include the function of a measurement chain, the importance of sample-and-hold circuits, aliasing effects, and the differences between SAR and ΣΔ ADCs. Additionally, DEWETRON’s approach to A/D conversion is highlighted.