M-V850E-IA4 Renesas Electronics America, M-V850E-IA4 Datasheet - Page 547

• Manufacturer Part Number: M-V850E-IA4
• Description: KIT EVAL V850E IA4 UPD70F3186
• Manufacturer: Renesas Electronics America

Specifications of M-V850E-IA4

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

(3) Quantization error
(4) Zero-scale error
When analog values are converted to digital values, a ±1/2 LSB error naturally occurs. In an A/D converter, an
analog input voltage in a range of ±1/2 LSB is converted to the same digital code, so a quantization error
cannot be avoided.
Note that the quantization error is not included in the overall error, zero-scale error, full-scale error, integral
linearity error, and differential linearity error in the characteristics table.
This shows the difference between the actual measurement value of the analog input voltage and the
theoretical value (1/2 LSB) when the digital output changes from 0……000 to 0……001.
100
010
001
000
011
111
CHAPTER 12 A/D CONVERTERS 0 AND 1
1 ...... 1
0 ...... 0
−1
Figure 12-26. Quantization Error
Figure 12-27. Zero-Scale Error
Zero-scale error
0
User’s Manual U16543EJ4V0UD
1/2 LSB
0
1
Analog input (LSB)
Ideal line
Analog input
2
1/2 LSB
Quantization error
3
AV
DD
AV
DD
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