NEC 78K0S/KA1+ Preliminary User's Manual page 168

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(5) Full-scale error
This shows the difference between the actual measurement value of the analog input voltage and the theoretical
value (Full-scale − 3/2LSB) when the digital output changes from 1......110 to 1......111.
(6) Integral linearity error
This shows the degree to which the conversion characteristics deviate from the ideal linear relationship. It
expresses the maximum value of the difference between the actual measurement value and the ideal straight line
when the zero-scale error and full-scale error are 0.
(7) Differential linearity error
While the ideal width of code output is 1LSB, this indicates the difference between the actual measurement value
and the ideal value.
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Figure 10-16. Zero-Scale Error
111
011
010
001
000
Figure 10-18. Integral Linearity Error
1 ...... 1
0 ...... 0
(8) Conversion time
This expresses the time from the start of sampling to when the digital output is obtained.
The sampling time is included in the conversion time in the characteristics table.
(9) Sampling time
This is the time the analog switch is turned on for the analog voltage to be sampled by the sample & hold circuit.
168
CHAPTER 10 A/D CONVERTER
Ideal line
Zero-scale error
0 1 2 3 AV
Analog input (LSB)
Ideal line
Integral linearity
error
AV
0
Analog input
Sampling
time
Preliminary User's Manual U16898EJ1V0UD
Figure 10-17. Full-Scale Error
111
110
101
000
0
REF
Figure 10-19. Differential Linearity Error
1 ...... 1
0 ...... 0
0
REF
Conversion time
Full-scale error
Ideal line
−3 −2 −1
AV AV AV AV
REF REF REF REF
Analog input (LSB)
Ideal 1LSB width
Differential
linearity error
AV
REF
Analog input