If we directly connect this to a digital input, it will register either as a high or a low depending on the input thresholds, which is completely useless. Unfortunately for digital systems, the world we live in is still analog and full of colour, not just black and white.įor example a temperature sensor like the LM35 outputs a voltage dependent on the temperature, in the case of that specific device 10mV per degree rise in temperature. Modern day electronics is purely digital – gone are the good old days of analog computers. ![]() These ADC circuits can be found as an individual ADC ICs by themselves or embedded into a microcontroller. What is an ADC (Analog to Digital Converter)?Īn analog to digital converter is a circuit that converts a continuous voltage value (analog) to a binary value (digital) that can be understood by a digital device which could then be used for digital computation. This something is called the ADC or Analog to Digital Converter and in this ADC article we will learn more about them. So, it is obvious that we need something that could convert these analog parameters to digital value for a microcontroller or micro-processor to understand it. ![]() But most of the electronic devices around us starting from a simple digital watch to a super computer are all digital devices. Everything we see, feel or measure is analog in nature such as light, temperature, speed, pressure etc. We live in an analog world, surrounded by digital devices.
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