mb95f204h Fujitsu Microelectronics, Inc., mb95f204h Datasheet - Page 56

• Manufacturer Part Number: mb95f204h
• Description: F2mc-8fx Mb95200h/210h Series
• Manufacturer: Fujitsu Microelectronics, Inc.

56
MB95200H/210H Series
(3) Definitions of A/D Converter Terms
• Resolution
• Linearity error (unit : LSB)
• Differential linear error (unit : LSB)
• Total error (unit: LSB)
It indicates 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
It indicates how much an actual conversion value deviates from the straight line connecting
the zero transition point (“00 0000 0000” ← → “00 0000 0001”) of a device to
the full-scale transition point (“11 1111 1111” ← → “11 1111 1110”) of the same device.
It indicates how much the input voltage required to change the output code by 1 LSB deviates from an ideal
value.
It indicates the difference between an actual value and a theoretical value. The error can be caused by a zero
transition error, a full-scale transition errors, a linearity error, a quantum error, or noise.
3FD
3FF
3FE
004
003
002
001
V
SS
V
OT
0.5 LSB
N
V
NT
Ideal I/O characteristics
: A/D converter digital output value
: Voltage at which the digital output transits from (N - 1) to N
1 LSB =
1 LSB
Analog input
V
CC
1024
- V
SS
V
(V)
FST
1.5 LSB
V
CC
3FD
3FE
digital output N
3FF
004
003
002
001
Total error of
V
SS
{1 LSB x (N-1) + 0.5 LSB}
Actual conversion
characteristic
=
10
V
= 1024.
NT
Ideal characteristic
- {1 LSB x (N - 1) + 0.5 LSB}
Analog input
Total error
Actual conversion
characteristic
1 LSB
V
NT
DS07-12623-1E
V
CC
[LSB]
(Continued)