UPD78F0078GK-9ET-A Renesas Electronics America, UPD78F0078GK-9ET-A Datasheet - Page 241

• Manufacturer Part Number: UPD78F0078GK-9ET-A
• Manufacturer: Renesas Electronics America

Specifications of UPD78F0078GK-9ET-A

• Lead Free Status / Rohs Status: Supplier Unconfirmed

(4) Zero-scale error
(5) Full-scale error
(6) Integral linearity error
(7) Differential linearity error
This shows the difference between the actual measured value of the analog input voltage and the theoretical
value (1/2 LSB) when the digital output changes from 0……000 to 0……001. If the actual measured value is
greater than the theoretical value, it shows the difference between the actual measured value of the analog input
voltage and the theoretical value (3/2 LSB) when the digital output changes from 0……001 to 0……010.
This shows the difference between the actual measured value of the analog input voltage and the theoretical
value (full scale – 3/2 LSB) when the digital output changes from 1……110 to 1……111.
This shows the degree to which the conversion characteristics deviate from the ideal linear relationship. It
expresses the maximum value of the difference between the actual measured value and the ideal straight line
when the zero-scale error and full-scale error are 0.
Although the ideal output width for a given code is 1 LSB, this value shows the difference between the actual
measured value and the ideal value of the width when outputting a particular code.
1 …… 1
0 …… 0
Figure 13-15. Integral Linearity Error
Figure 13-13. Zero-Scale Error
111
011
010
001
000
0
0
Ideal line
Ideal line
1
Analog input (LSB)
Analog input
2
Zero-scale error
3
Integral
linearity
error
CHAPTER 13 A/D CONVERTER
AV
User’s Manual U14260EJ4V0UD
AV
REF
REF
Figure 13-16. Differential Linearity Error
1 ...... 1
0 ...... 0
111
110
000
101
Figure 13-14. Full-Scale Error
0
0
Ideal width of 1 LSB
AV
Analog input (LSB)
REF
–3
Full-scale error
Analog input
AV
REF
Differential
linearity error
–2
AV
Ideal line
REF
–1
AV
REF
AV
REF
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