RA4W1 datasheet(81/105 Pages) RENESAS

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R01DS0359EJ0100 Rev.1.00

Page 81 of 105

Mar 31, 2020

RA4W1 Datasheet

2. Electrical Characteristics

Figure 2.66

Illustration of D/A converter characteristic terms

Integral nonlinearity error (INL)

Integral nonlinearity error is the maximum deviation between the ideal output voltage based on the ideal conversion

characteristic when the measured offset and full-scale errors are zeroed, and the actual output voltage.

Differential nonlinearity error (DNL)

Differential nonlinearity error is the difference between 1-LSB voltage width based on the ideal D/A conversion

characteristics and the width of the actual output voltage.

Offset error

Offset error is the difference between the highest actual output voltage that falls below the lower output limit and the

ideal output voltage based on the input code.

Full-scale error

Full-scale error is the difference between the lowest actual output voltage that exceeds the upper output limit and the

ideal output voltage based on the input code.

000h

D/A converter input code

FFFh

Output analog voltage

Upper output limit

Lower output limit

Offset error

Ideal output voltage

1-LSB width for ideal D/A conversion

characteristic

Differential nonlinearity error

(DNL)

Actual D/A conversion characteristic

Integral nonlinearity error (INL)

Full-scale error

Gain error

Offset error

Ideal output voltage

Note 1.

Ideal D/A conversion output voltage that is adjusted so that offset and full scale errors are zeroed.

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