Sigma-Delta modulator

A Sigma-Delta modulator is a type of electronic device that converts analog signals into digital form with high accuracy. It works by continuously measuring the input signal and comparing it to a precise internal reference. Instead of recording the exact value, it keeps track of the difference or error, which is then converted into a digital bitstream. This approach allows the system to focus on small changes in the input, resulting in very precise digital data. Sigma-Delta modulators are commonly used in high-fidelity audio and data acquisition systems due to their ability to produce accurate digital representations of analog signals with minimal noise.