upd78f0114m6gb-8es Renesas Electronics Corporation., upd78f0114m6gb-8es Datasheet - Page 239

• Manufacturer Part Number: upd78f0114m6gb-8es
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

(4) Zero-scale error
(5) Full-scale error
(6) Integral linearity error
(7) Differential linearity error
This shows the difference between the actual measurement value of the analog input voltage and the theoretical
value (1/2LSB) when the digital output changes from 0......000 to 0......001.
If the actual measurement value is greater than the theoretical value, it shows the difference between the actual
measurement value of the analog input voltage and the theoretical value (3/2LSB) when the digital output
changes from 0……001 to 0……010.
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.
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.
While the ideal width of code output is 1LSB, this indicates the difference between the actual measurement value
and the ideal value.
1 …… 1
0 …… 0
Figure 11-17. Integral Linearity Error
111
011
010
001
000
Figure 11-15. Zero-Scale Error
0
0
Ideal line
Ideal line
1
Analog input (LSB)
2
Analog input
Zero-scale error
Integral linearity
error
3
CHAPTER 11 A/D CONVERTER
AV
AV
User’s Manual U16227EJ3V0UD
REF
REF
Figure 11-18. Differential Linearity Error
1 …… 1
0 …… 0
111
110
000
101
Figure 11-16. Full-Scale Error
0
0
Ideal 1LSB width
AV
Analog input (LSB)
REF
Analog input
–3
Full-scale error
AV
REF
linearity error
Differential
–2
Ideal line
AV
REF
–1
AV
AV
REF
REF
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