Renesas RL78/G1P Hardware User Manual page 313

RL78/G1P
(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.
Figure 9-40. Zero-Scale Error
111
Ideal line
011
010
001
000
0
1
AV
REF
4096
Figure 9-42. Integral Linearity Error
1 ...... 1
Ideal line
0 ...... 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.
R01UH0895EJ0100 Rev.1.00
Nov 29, 2019
Zero-scale error
AV
2 3
REF
AV
AV
REF REF
4096
4096
Analog input (V)
Integral linearity
error
AV
REF
Analog input
Sampling
time
Figure 9-41. Full-Scale Error
111
110
101
000
0
Figure 9-43. Differential Linearity Error
1 ...... 1
Ideal 1LSB width
0 ...... 0
0
Conversion time
CHAPTER 9 A/D CONVERTER
Full-scale error
Ideal line
4093 4094 4095 AV
AV AV REF
AV
REF REF
REF
4096 4096 4096
Analog input (V)
Differential
linearity error
AV
REF
Analog input
294