mb95r203a Fujitsu Microelectronics, Inc., mb95r203a Datasheet - Page 41

• Manufacturer Part Number: mb95r203a
• Description: 8-bit Proprietary Microcontrollers
• Manufacturer: Fujitsu Microelectronics, Inc.

DS07-12630-1E
(3) Definition of A/D Converter Terms
• Resolution
• Linearity error (unit : LSB)
• Differential linear error (Unit : LSB)
• Total error (unit : LSB)
The level of analog variation that can be distinguished by the A/D converter.
When the number of bits is 10, analog voltage can be divided into 2
The deviation between the value along a straight line connecting the zero transition point
Deviation of input voltage, which is required for changing output code by 1 LSB, from an ideal value.
Difference between actual and theoretical values, caused by a zero transition error, full-scale transition error,
linearity error, quantum error, and noise.
(“00 0000 0000” ←→ “00 0000 0001”) of a device and the full-scale transition point
(“11 1111 1111” ←→ “11 1111 1110”) compared with the actual conversion values obtained.
1 LSB =
3FF
3FE
3FD
004
003
002
001
N
V
NT
V
SS
: A/D converter digital output value
: A voltage at which digital output transits from (N - 1) to N
V
OT
V
0.5 LSB
CC
Ideal I/O characteristics
1024
− V
Analog input
1 LSB
SS
(V)
V
FST
1.5 LSB
digital output N
V
Total error of
CC
3FF
3FE
3FD
004
003
002
001
V
SS
{1 LSB × (N − 1) + 0.5 LSB}
=
Actual conversion
characteristic
V
NT
− {1 LSB × (N − 1) + 0.5 LSB}
10
= 1024.
Ideal characteristics
Analog input
Total error
1 LSB
Actual conversion
characteristic
MB95R203A
V
NT
V
CC
(Continued)
[LSB]
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