The 8-bit analog-to-digital converter is a digital signal processing component that converts an analog input into a digital output. This specific device is referred to as the 8 Bit Analog to Digital Converter 2, and it has two or four input channels depending on the model. The conversion process is based on Successive Approximation Register (SAR) architecture. It comes in a 16-pin Dual In-Line Package (PDIP) format.