## what is ADC (analog to digital convertion)

Adc (analog to digital convertion) is a device used to convert analog signals (continuous signals) into digital signals (1 and 0)

Any analog device that will be processed by a digital tool definitely requires adc

The opposite of adc is dac (digital to analog convertion)

To better understand the of adc and how the adc circuit (analog to digital convertion) then the admin will explain in the article below

## how does adc work (analog to digital convertion)

An example of an adc circuit is on the phone

When you speak or record sound on the phone then the sound signal (analog) buddy must first be converted into digital data

You need to know that analog devices can only process analog data just as well as digital devices can only process digital data only

the voice signal is analog while the phone is a digital device so that the mobile phone can process the analog data must pass through the adc circuit first

## Which affects the speed of adc

The speed of the adc sampling is to say “how often an analog signal is converted to a digital signal form at a certain time interval”.

The sampling rate is usually expressed in the sample per second (sps). The higher the adc sampling, the higher the accuracy you get will be higher

Adc resolution is the adc precision in converting analog signals into digital signals

Examples of 8 bit adc will have as much accuracy as 255 values, 10 bit adc will have as much accuracy as 1024 values

The higher the resolution of adc then the value obtained will be more accurate and vice versa

The core of an adc is the comparator

The comparator function in the adc circuit is to compare the input voltage with the reference voltage

The comparator is basically composed of an operational amplifier

how adc work (analog to digital convertion)

Type of adc that you need to know there are several types of them are simultaneous adc, counter, ram adc, and SAR adc

Well this time admin will only provide a simple example of how the simcard type of simcard works

Suppose you will change the analog signal from 0V-12V to digital data then you can make the following series The simultaneous adc circuit in the picture above has 8 comparators. Each comparator will output 1 if the input voltage of the input into the comparator is greater than the Vref voltage

Once through the comparator the next data will be fed to the encoder and from this encoder output signal will be generated

The lack of a simultaneous decoder is to create an adc with 8 bit resolution should require 255 comparators

To create a 10-bit adc it takes 1024 comparators

For other types of adc will be admin discussed in other posts