CHAPTER 12 A/D CONVERTER
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User’s Manual U14359EJ4V0UM
(5) Full-scale error
This is a difference between the actually measured analog input voltage and its theoretical value when digital
output changes from 1…110 to 0…111 (full scale
−
3/2 LSB).
Figure 12-21. Full-Scale Error
AV
REF
Analog input (LSB)
Digital output (lo
w
er 3 bits)
111
AV
REF
−
3
0
AV
REF
−
2 AV
REF
−
1
100
011
010
000
Full-scale errors
(6) Differential linearity error
Ideally, the width to output a specific code is 1 LSB. This error indicates the difference between the actually
measured value and its theoretical value when a specific code is output.
Figure 12-22. Differential Linearity Error
Ideal widths of 1 LSB
Differential
linearity error
1......1
0......0
AV
REF
Analog input
Digital output