Analog to Digital Converter (ADC)

An analog to digital converter is a device that converts continuous analog signals into discrete digital signals. A 12-bit analog to digital converter has a resolution of 4096, meaning it can take analog input values from 0 to 4095 and convert them to digital values. A 115200 baud rate means that the converter can take up to 115200 samples per second. The converter converts the analog signal into a digital signal by measuring the amplitude of the signal at regular intervals and encoding it as a binary number. The analog to digital converter will be used to convert the analog signal from the optical reciever into a digital, which will be used to compute the FFT.

This is a link to a reference document for the ADC-4U12 Analog to Digital Converter (12 bit).