An analog-to-digital converter (ADC) is a device that converts an input signal from an analog domain into a digital format. The ADC is used in various applications, including data acquisition systems, embedded systems, and telecommunications. Its primary function is to capture the amplitude of an analog input signal and represent it as a numerical value. In the context of bit-accurate ADCs, the term "bit" refers to the resolution or precision with which the analog signal is converted into digital form. The more bits used in the conversion process, the higher the resolution and the larger the range of values that can be represented.