TMS470R1A256_09 Datasheet, PDF (43/48 Pages) Texas Instruments – 16/32-Bit RISC Flash Microcontroller

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TMS470R1A256
16/32-Bit RISC Flash Microcontroller
SPNS100B – NOVEMBER 2004 – REVISED AUGUST 2006
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 20. Integral Nonlinearity (INL) Error
The absolute accuracy or total error of an MibADC as shown in Figure 21 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 21. Absolute Accuracy (Total) Error
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