RL78/G15 CHAPTER 10 A/D CONVERTER
R01UH0959EJ0110 Rev.1.10 Page 338 of 765
Mar 7, 2023
10.8 How to Read A/D Converter Characteristics Table
Here, special terms unique to the A/D converter are explained.
10.8.1 Resolution
This is the minimum analog input voltage that can be identified. That is, the percentage of the analog input voltage per bit
of digital output is called 1LSB (Least Significant Bit). The percentage of 1LSB relative to the full scale is expressed
by %FSR (Full Scale Range).
1LSB is as follows when the resolution is 10 bits.
1/2
10
= 1/1024
The accuracy is determined by overall error, regardless of the resolution.
10.8.2 Overall error
This shows the maximum error value between the actual measurement value and the theoretical value.
Zero-scale error, full-scale error, integral linearity error, and differential linearity errors that are combinations of these
express the overall error.
Note that the quantization error is not included in the overall error in the characteristics table.
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