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What does accuracy of a DAC mean?

The accuracy of a Digital-to-Analog Converter (DAC) refers to how closely the output voltage or current matches the digital input code it receives. It is typically measured in terms of the percentage error between the actual output and the ideal output. Higher accuracy indicates that the DAC can faithfully reproduce the analog signal from the digital input without introducing significant errors or distortions. This is crucial in applications where precise analog signal reproduction is required, such as in audio equipment or instrumentation.


How is digital audio decoded?

To have digital to audio played back it has to be changed back to analog with the use of a DAC or digital to analog converter. The DAC will take the digital signal and try to recreate it as a analog signal.


What is step size of a DAC?

A: A DAC and ADC will have by design a certain assignment of bits or steps each step or bit value is dependent o the total number of bits available 12 bit dac assuming 10v reference its LSB value will be 4.08 mv minimum 10V/2048=4.08 mv 2048 is 2 raised 12 times


State three advantages of over-sampling?

1) It greatly simplifies the design of the low pass filter which follows the DAC, which has to attenuate the aliasing noise but not the signal. Oversampling increases the gap between these, simplifying the low pass filter. 2) It allows for interpolation and thus much lower sine wave distortion figures. 3) It allows for superior DAC architectures such as delta-sigma and 1 bit DACs.


A 12-bit DAC has a step size of 8 mvDetermine the full scale output voltage and percentage resolutionAlso find the output voltage for the input of 010101101101?

Assuming the zero state output of the DAC is 0 volts, then 4095 steps of 8mv would yield a full scale output of 32.76 volts. The resolution is one part in 4096, or 2.44 percent. An input of 010101101101 is 1389. Multiply that by 8mv, and you get 11.11 volts.