What is DNL (differential nonlinearity)?
The error in each code step width of an ADC relative to the ideal 1 LSB. When it reaches −1 LSB, a missing code occurs.
Field: AD/DA conversion
DNL (differential nonlinearity) in the explanations
DNL measures how far each code's input width (step width) deviates from the ideal 1 LSB; a width of 1.5 LSB means DNL = +0.5 LSB.
Which correctly describes the differential nonlinearity (DN…A code whose DNL reaches −1 LSB has no input width and never appears at the output—a missing code.
What is the AD converter defect called in which a certain o…Coding the upper bits as thermometer code with equal-weight sources reduces glitches and DNL.
Which is a characteristic of the current-steering architect…
Questions that mention DNL (differential nonlinearity) (7)
- Which correctly describes the differential nonlinearity (DNL) of an AD converter?
- What is the AD converter defect called in which a certain output code never appears no matter how the input changes?
- Which is a characteristic of the current-steering architecture often used in high-speed DA converters?
- In the transfer characteristic of an AD converter, what is the error called when the output deviates from 0 at zero input?
- Which correctly describes the integral nonlinearity (INL) of an AD converter?
- What does it mean for a DA converter to be monotonic?
- In AD converter testing, what is the main purpose of inputting a slowly varying sine wave or similar and counting how often each output code appears (a histogram)?
Related terms
INL (integral nonlinearity) Missing code Comparator Aliasing Delta-sigma ADC ENOB (effective number of bits) Flash ADC Jitter Noise shaping Nyquist frequency