SM470R1B1M-HT Datasheet, PDF (63/67 Pages) Texas Instruments – 16/32-BIT RISC FLASH MICROCONTROLLER

SM470R1B1M-HT
www.ti.com
SPNS155F – SEPTEMBER 2009 – REVISED AUGUST 2012
The integral nonlinearity error shown in Figure 26 (sometimes referred to as linearity error) is the deviation of the
values on the actual transfer function from a straight line.
0 ... 111
0 ... 110
0 ... 101
0 ... 100
0 ... 011
Ideal
Transition
Actual
Transition
At Transition
011/100
(ć 1/2 LSB)
0 ... 010
End-Point Lin. Error
0 ... 001
At Transition
001/010 (ć 1/4 LSB)
0 ... 000
01 2
3
4
5
6
7
Analog Input Value (LSB)
A. 1 LSB = (AD_REFHI - AD_REFLO)/2¹⁰
Figure 26. Integral Nonlinearity (INL) Error
The absolute accuracy or total error of an MibADC as shown in Figure 27 is the maximum value of the difference
between an analog value and the ideal midstep value.
0 ... 111
0 ... 110
0 ... 101
0 ... 100
0 ... 011
Total Error
At Step 0 ... 101
(-1 1/4 LSB)
0 ... 010
0 ... 001
Total Error
At Step 0 ... 001
(1/2 LSB)
0 ... 000
0
1
2
3
4
5
6
7
Analog Input Value (LSB)
A. 1 LSB = (AD_REFHI - AD_REFLO)/2¹⁰
Figure 27. Absolute Accuracy (Total) Error
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