# What is 2 bit flash ADC?

## What is 2 bit flash ADC?

2-bit Flash ADC uses -1 TIQ comparators which generate reference voltages internally to compare the input voltage and generates thermometer code for each combination of analog input. This thermometer code is then converted to 2-bit binary code using a thermometer-binary encoder.

## What is the number of comparators required to design a 2 bit flash ADC?

1) It is the fastest ADC among all the ADC types. 2) An n-bit flash type ADC requires: 2n -1 comparators, 2n resistors and one 2n × n priority encoder.

What is the resolution of 2 bit ADC?

What is resolution? So in this example, the 2-bit digital value can represent 4 different numbers, and the voltage input range of 0 to 10 volts is divided into 4 pieces giving a voltage resolution of 2.5 volts per bit.

### What are flash ADCs used for?

Abstract: Flash analog-to-digital converters, also known as parallel ADCs, are the fastest way to convert an analog signal to a digital signal. Flash ADCs are ideal for applications requiring very large bandwidth, but they consume more power than other ADC architectures and are generally limited to 8-bit resolution.

### How many comparators are used in flash ADC?

Flash ADC architecture uses 2 N resistors and 2 N -1 comparators to convert an N-bit data. In traditional flash ADC architecture 2 N -1 comparators will work in parallel, which will cause high power consumption.

What is the main component in the flash ADC?

A 3-bit Flash ADC consists of seven comparators, a resistive voltage divider circuit that contains 8 series resistors, and a priority encoder. The input analog voltage is applied to the positive terminal of the comparator while the reference voltage is applied to the negative end of the comparator.

## What are the limitations of flash ADC?

The disadvantage of the Flash ADC is the area and power requirements of the 2 N-1 comparators. The speed is limited by the switching of the comparators and the digital logic.