# Blog

## What is flash type ADC and how does it work? ## How does a 3-bit ADC work?

• It is formed of a series of comparators, each one comparing the input signal to a unique reference voltage. The comparator outputs connect to the inputs of a priority encoder circuit, which then produces a binary output. The following illustration shows a 3-bit flash ADC circuit:

## What is 2-bit parallel or flash analog to digital converter?

• 2-Bit Parallel or Flash Analog to Digital Converter Abstract -A 2 bit parallel analog to digital converter using comparators and priority encoder giving digital output is proposed, designed, and implemented using transistor-transistor logic. The circuit is found to be working satisfactorily. this is also called as flash ADC.

## Do I need a comparator for a flash ADC?

• This is needed for many ADC types (like successive approximation ADC ), but for flash ADCs there is no real need for this, because the comparators are the sampling devices. A flash converter requires a huge number of comparators compared to other ADCs, especially as the precision increases.

## What is flash type ADC and how does it work?What is flash type ADC and how does it work?

Flash Type ADC is based on the principle of comparing analog input voltage with a set of reference voltages. To convert the analog input voltage into a digital signal of n-bit output, (2 n – 1) comparators are required. The following figure shows 2- bit flash type ADC. The three op-amps are used as comparators.  ### How does a 3-bit ADC work?How does a 3-bit ADC work?

It is formed of a series of comparators, each one comparing the input signal to a unique reference voltage. The comparator outputs connect to the inputs of a priority encoder circuit, which then produces a binary output. The following illustration shows a 3-bit flash ADC circuit:

### Do I need a comparator for a flash ADC?Do I need a comparator for a flash ADC?

This is needed for many ADC types (like successive approximation ADC ), but for flash ADCs there is no real need for this, because the comparators are the sampling devices. A flash converter requires a huge number of comparators compared to other ADCs, especially as the precision increases.

### What is 2-bit parallel or flash analog to digital converter?What is 2-bit parallel or flash analog to digital converter?

2-Bit Parallel or Flash Analog to Digital Converter Abstract -A 2 bit parallel analog to digital converter using comparators and priority encoder giving digital output is proposed, designed, and implemented using transistor-transistor logic. The circuit is found to be working satisfactorily. this is also called as flash ADC.