Contents
What are the factors affecting the accuracy of ADC explain any two?
The ADC errors related to the whole system includes: reference-voltage noise, analog-input signal noise, ADC dynamic range, analog-signal source resistance, and temperature influence. The ADC output is the ratio between the analog-signal voltage and the reference voltage.
Which is fastest type of ADC converter?
flash ADC
The flash ADC is the fastest type available. A flash ADC uses comparators, one per voltage step, and a string of resistors. A 4-bit ADC will have 16 comparators, an 8-bit ADC will have 256 comparators.
How does ADC work what are the ADC types?
ADCs follow a sequence when converting analog signals to digital. They first sample the signal, then quantify it to determine the resolution of the signal, and finally set binary values and send it to the system to read the digital signal. Two important aspects of the ADC are its sampling rate and resolution.
What kind of voltage supply does the ADC use?
AVCC is the analog voltage supply used internally by the ADC and is most commonly internally connected to the AREF pin, used directly as the reference for ADC readings. You can either filter and decouple AREF, or VCC, but the one that matters most depends on what you actually want for your ADC.
Why do you need 3 wires for 2 ( 2 )?
Two conductors are used to carry the RS485 Differential voltage signal. The Shield is connected to earth/ground at one end only and provides shielding against induced noise. So why the 3rd conductor ? The driver sends data by modulating the differential voltage. The receiver must sense and decode the differential.
Why do you need 2 wires for RS485?
Many people say its a two wire network but it is not. Two conductors are used to carry the RS485 Differential voltage signal. The Shield is connected to earth/ground at one end only and provides shielding against induced noise.
Is the atmel328p an ADC capacitor For exampl?
You can either filter and decouple AREF, or VCC, but the one that matters most depends on what you actually want for your ADC. The Atmel328P has internal Vref (2.56V or other ones) you can select, for exampl.