4513 datasheet(181/210 Pages) RENESAS

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3-14

APPENDIX

3.2 Typical characteristics

4513/4514 Group User’s Manual

3.2.5 A-D converter typical characteristics

Fig. 3.2.1 A-D conversion characteristics data

Figure 3.2.1 shows the A-D accuracy measurement data.

(1) Non-linearity error ......................... This means a deviation from the ideal characteristics between V0 to

V1022 of actual A-D conversion characteristics. In Figure 3.2.1, it is

(–)/1LSB.

(2) Differencial non-linearity error .... This means a deviation from the ideal characteristics between the

input voltages V0 to V1022 necessary to change the output data to

“1.” In Figure 3.2.1, this is /1LSB.

(3) Zero transition error ..................... This means a deviation from the ideal characteristics between the

input voltages 0 to VDD when the output data changes from “0” to “1.”

In Figure 3.2.1, this is the value of .

(4) Full-scale transition error ............. This means a deviation from the ideal characteristics between the

input voltages 0 to VDD when the output data changes from “1022”

to “1023.” In Figure 3.2.1, this is the value of .

(5) Absolute accuracy ........................ This menas a deviation from the ideal characteristics between 0 to

VDD of actual A-D conversion characteristics. In Figure 3.2.1, this is

the value of ERROR in each of , , and .

For the A-D converter characteristics, refer to the section 3.1 Electrical characteristics.

+1LSB

-1LSB

1LSB WIDTH

1022 1023

ERROR

-30

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