What is accuracy in adc

The accuracy of a converter refers to how many bits, from conversion to conversion, are repeatable. That is, accuracy reflects how true the ADC's output reflects the actual input. Accuracy is determined by the DC specifications for gain, offset, and linearity (integral nonlinearity and differential nonlinearity).

1. What is meant by accuracy of ADC?
2. What is accuracy of DA converter?
3. What is accuracy in DAC?
4. How the accuracy of ADC can be improved?

What is meant by accuracy of ADC?

The ADC resolution is defined as the smallest incremental voltage that can be recognized and thus causes a change in the digital output. It is expressed as the number of bits output by the ADC. Therefore, an ADC which converts the analog signal to a 12-bit digital value has a resolution of 12 bits.

What is accuracy of DA converter?

Accuracy specifies the maximum difference between the actual analog value compared with the value measured. If you feed a 2.5 volt signal to an A/D input, the accuracy is a measure of how closely the A/D indicates the applied voltage is actually 2.5 volts.

What is accuracy in DAC?

Resolution for an 8 – bit DAC for example is said to have : 8 – bit resolution : A resolution of 0.392 of full-Scale (1/255) : A resolution of 1 part in 255. Accuracy: Absolute accuracy is the maximum deviation between the actual converter output and the ideal converter output.

How the accuracy of ADC can be improved?

High CEXT Capacitance. The measured accuracy error of the device improved tremendously to -0.04% as if the input had a low-impedance source (Figure 6) by installing a high external capacitance at channel 2 (CEXT = 0.1µF) at the analog input of the MAX11613 ADC.