What is DNL and INL in DAC?
Linearity of a DAC DNL is the maximum deviation of an actual analog output step, between adjacent input codes, from the ideal step value (Δ). INL is the maximum deviation, at any point in the transfer function, of the actual output level from its ideal value.
What is DAC INL?
Integral nonlinearity (acronym INL) is a commonly used measure of performance in digital-to-analog (DAC) and analog-to-digital (ADC) converters. In DACs, it is a measure of the deviation between the ideal output value and the actual measured output value for a certain input code.
How to check DNL and INL of DAC converter?
DAC_OUT=VS (“/DAC_OUT”) “output of my DAC (voltage or current) used further in the expressions” With this expressions I’m able to check the DNL and INL of typical run (which is typically quite good 🙂 Now I would like to run 200 Monte Carlo simulations so I will have 200 waves of DNL and INL with DAC input code on X axis.
Which is an example of an INL for a DAC?
The INL for each output level is defined as the deviation of the actual input–output characteristic from the ideal transfer curve. For example, the INL of the output for code 100 is -1.5 LSb in Figure 2 (the ideal output should be 4 LSb but the actual output is 2.5 LSb).
Which is the largest possible step at a DAC?
Therefore, the largest possible step at the DAC output will be 2 LSb, which gives a DNL of 1 LSb. Hence, if the INL is less than ±0.5 LSb, the DNL is no more than ±1 LSb. To summarize our discussion so far, if the INL of a DAC is less than ±0.5 LSb, the input–output characteristic is monotonic and the DNL is no more than ±1 LSb.
What is the DNL of a DAC transition?
The DNL is the maximum deviation of the output steps from the ideal analog LSb value. For example, considering the transition from 001 to 010, we get an output step of 2.5I ✖ R L.