参数资料
型号: MB91F346BPFT-GE1
元件分类: 微控制器/微处理器
英文描述: 32-BIT, FLASH, 50 MHz, RISC MICROCONTROLLER, PQFP100
封装: 12 X 12 MM, 1.20 MM HEIGHT, 0.40 MM PITCH, PLASTIC, TQFP-100
文件页数: 61/72页
文件大小: 657K
代理商: MB91F346BPFT-GE1
MB91345 Series
64
A/D Converter Block Electrical Characteristics
Resolution
Analog variations recognized by an A/D converter.
Linearity error
Deviation of actual conversion characteristics from an ideal line, which is across zero-transition point
(“00 0000 0000”
←→ “00 0000 0001”) and full-scale transition point (“11 1111 1110” ←→ “11 1111 1111”).
Differential linearity error
Deviation from ideal value of input voltage, which is required for changing output code by 1 LSB.
Total error
Difference between actual value and ideal value. The error includes zero-transition error, full-scale transition
error, and linearity error.
(Continued)
3FFH
001H
3FDH
004H
003H
002H
3FEH
0.5 LSB'
AVSS
AVRH
{1 LSB'
(N 1) + 0.5 LSB'}
1.5 LSB'
Analog input
Total error
Digital
output
Actual
characteristic
VNT
(Actual measured
value)
Ideal
characteristics
Actual
characteristic
VNT : Transition voltage for digital output to change from (N
+ 1) H to NH.
VOT' (ideal value)
= AVSS + 0.5 LSB' [V]
VFST' (ideal value)
= AVRH 1.5 LSB' [V]
1 LSB' (ideal value)
=
AVRH
AVSS
[V]
1024
Total error of digital output N
=
VNT
{1 LSB' × (N 1) + 0.5 LSB'}
1 LSB'
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