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Analog Input Value (LSB)
At Transition
011/100
(ć 1/2 LSB)
End-Point Lin. Error
At Transition
001/010 (ć 1/4 LSB)
Ideal
Transition
Actual
Transition
0 ... 101
0 ... 100
0 ... 011
0 ... 010
0 ... 001
0 ... 111
0 ... 110
0 ... 000
TMS470R1B1M
16/32-Bit RISC Flash Microcontroller
SPNS109A – SEPTEMBER 2005 – REVISED AUGUST 2006
The integral nonlinearity error shown in Figure 24 (sometimes referred to as linearity error) is the deviation of the
values on the actual transfer function from a straight line.
A. 1 LSB = (AD
REFHI
- AD
REFLO
)/2
10
Figure 24. Integral Nonlinearity (INL) Error
The absolute accuracy or total error of an MibADC as shown in Figure 25 is the maximum value of the
difference between an analog value and the ideal midstep value.
A. 1 LSB = (AD
REFHI
- AD
REFLO
)/2
10
Figure 25. Absolute Accuracy (Total) Error
55
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