h8s-2628 Renesas Electronics Corporation., h8s-2628 Datasheet - Page 500

• Manufacturer Part Number: h8s-2628
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 17 A/D Converter
17.6
This LSI’s A/D conversion accuracy definitions are given below.
Rev. 3.00 Oct 04, 2005 page 460 of 598
REJ09B0155-0300
Resolution
The number of A/D converter digital output codes
Quantization error
The deviation inherent in the A/D converter, given by 1/2 LSB (see figure 17.4).
Offset error
The deviation of the analog input voltage value from the ideal A/D conversion characteristic
when the digital output changes from the minimum voltage value B'0000000000 (H'000) to
B'0000000001 (H'001) (see figure 17.5).
Full-scale error
The deviation of the analog input voltage value from the ideal A/D conversion characteristic
when the digital output changes from B'1111111110 (H'3FE) to B'1111111111 (H'3FF) (see
figure 17.5).
Nonlinearity error
The error with respect to the ideal A/D conversion characteristic between zero voltage and full-
scale voltage. Does not include offset error, full-scale error, or quantization error (see figure
17.5).
Absolute accuracy
The deviation between the digital value and the analog input value. Includes offset error, full-
scale error, quantization error, and nonlinearity error.
A/D Conversion Accuracy Definitions