TMS470R1VF48C Datasheet, PDF (61/67 Pages) Texas Instruments – 16/32-BIT RISC FLASH MICROCONTROLLERS

TMS470R1VF48C/VF48B
16/32-BIT RISC FLASH MICROCONTROLLERS
SPNS093D – MAY 2004 – REVISED FEBRUARY 2006
multi-buffered A-to-D converter (MibADC) (continued)
The differential nonlinearity error shown in Figure 23 (sometimes referred to as differential linearity) is the
difference between an actual step width and the ideal value of 1 LSB.
0 ... 110
0 ... 101
0.... 100
0.... 011
0.... 010
1 LSB
Differential
Linearity Error (1/2 LSB)
0.... 001
0.... 000
0
1 LSB
Differential Linearity
Error (–1/2 LSB)
1
2
3
4
5
Analog Input Value (LSB)
NOTE:.1 LSB = (AD_REFHI – AD_REFLO)/
Figure 23. Differential Nonlinearity (DNL)
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.
0 ... 111
0 ... 110
0 ... 101
0 ... 100
0 ... 011
Ideal
Transition
Actual
Transition
At Transition
011/100
(– 1/2 LSB)
0 ... 010
0 ... 001
0 ... 000
0
End-Point Lin. Error
At Transition
001/010 (– 1/4 LSB)
12
3
4
5
6
7
Analog Input Value (LSB)
NOTE:.1 LSB = (AD_REFHI – AD_REFLO)/
Figure 24. Integral Nonlinearity (INL) Error
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