ATTINY261_14 Datasheet, PDF (141/206 Pages) ATMEL Corporation – High Performance, Low Power AVR

● Integral non-linearity (INL): After adjusting for offset and gain error, the INL is the maximum deviation of an actual
transition compared to an ideal transition for any code. Ideal value: 0 LSB.
Figure 19-11. Integral Non-linearity (INL)
Output Code
Ideal ADC
Actual ADC
V_REF Input Voltage
● Differential non-linearity (DNL): The maximum deviation of the actual code width (the interval between two adjacent
transitions) from the ideal code width (1 LSB). Ideal value: 0 LSB.
Figure 19-12. Differential Non-linearity (DNL)
Output Code
0x3FF
1 LSB
DNL
0x000
0
V_REF Input Voltage
● Quantization error: Due to the quantization of the input voltage into a finite number of codes, a range of input voltages
(1 LSB wide) will code to the same value. Always ±0.5 LSB.
● Absolute accuracy: The maximum deviation of an actual (unadjusted) transition compared to an ideal transition for
any code. This is the compound effect of offset, gain error, differential error, non-linearity, and quantization error. Ideal
value: ±0.5 LSB.
ATtiny261/ATtiny461/ATtiny861/ATtiny461 [DATASHEET] 141
7753G–AVR–06/14