mb90f352espmc1 Fujitsu Microelectronics, Inc., mb90f352espmc1 Datasheet - Page 77

• Manufacturer Part Number: mb90f352espmc1
• Description: 16-bit Proprietary Microcontrollers
• Manufacturer: Fujitsu Microelectronics, Inc.

6. Definition of A/D Converter Terms
Resolution
Non linearity
error
Differential
linearity error
Total error
Total error of digital output “N” =
N
V
V
V
OT
FST
NT
: Analog variation that is recognized by an A/D converter.
: Deviation between a line across zero-transition line ( “00 0000 0000” ← → “00 0000 0001” )
: Deviation of input voltage, which is required for changing output code by 1 LSB, from an ideal
: Difference between an actual value and a theoretical value. A total error includes zero
and full-scale transition line ( “11 1111 1110” ← → “11 1111 1111” ) and actual conversion
characteristics.
value.
transition error, full-scale transition error, and linear error.
(Ideal value) = AV
(Ideal value) = AVRH − 1.5 LSB [V]
: A/D converter digital output value
: A voltage at which digital output transits from (N − 1) to N.
1 LSB (Ideal value) =
3FD
3FF
3FE
004
003
002
001
H
H
H
H
H
H
H
AV
SS
Actual conversion
characteristics
SS
0.5 LSB
+ 0.5 LSB [V]
Analog input
Ideal characteristics
Total error
V
AVRH − AV
NT
− {1 LSB × (N − 1) + 0.5 LSB}
1024
Actual conversion
characteristics
{1 LSB × (N − 1) + 0.5 LSB}
SS
(Actual measurement value)
1 LSB
V
[V]
NT
1.5 LSB
AVRH
MB90350E Series
[LSB]
(Continued)
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