MB89656AR FUJITSU [Fujitsu Component Limited.], MB89656AR Datasheet - Page 38

• Manufacturer Part Number: MB89656AR
• Description: 8-bit Proprietary Microcontroller
• Manufacturer: FUJITSU [Fujitsu Component Limited.]

38
MB89650AR Series
(1) A/D Glossary
• Resolution
• Linearity error (unit: LSB)
• Differential linearity error (unit: LSB)
• Total error (unit: LSB)
Analog changes that are identifiable with the A/D converter.
When the number of bits is 8, analog voltage can be divided into 2
The deviation of the straight line connecting the zero transition point (“0000 0000”
full-scale transition point (“1111 1111”
The deviation of input voltage needed to change the output code by 1 LSB from the theoretical value
The difference between theoretical and actual conversion values
1111
1111
0000
0000
0000
1111
1110
0010
0001
0000
Digital output
(1 LSB
V
Actual conversion value
OT
Theoretical conversion value
N + V
V
OT
NT
)
V
(N + 1)T
Linearity error
“1111 1110”) from actual conversion characteristics
V
FST
Analog input
Differential linearity error =
1 LSB =
Linearity error =
8
Total error =
= 256.
AVR
256
V
V
( N + 1 ) T
V
NT
NT
1 LSB
– (1 LSB
– (1 LSB
– V
“0000 0001”) with the
1 LSB
1 LSB
NT
– 1
N + 1 LSB)
N + V
OT
)