參數(shù)資料
型號(hào): MB89675RPFM
廠商: FUJITSU LTD
元件分類: 微控制器/微處理器
英文描述: Hex Schmitt-trigger Inverters 14-CDIP -55 to 125
中文描述: 8-BIT, MROM, 10 MHz, MICROCONTROLLER, PQFP80
封裝: PLASTIC, LQFP-80
文件頁數(shù): 45/59頁
文件大?。?/td> 795K
代理商: MB89675RPFM
45
MB89670R/670AR Series
Since the A/D converter contains a sample hold circuit, the level of the analog input pin might not stabilize within
the sampling period after starting A/D, resulting in inaccurate A/D conversion values, if the input impedance to the
analog pin is too high. Be sure to maintain an appropriate input impedance to the analog pin.
It is recommended to keep the input impedance to the analog pin from exceeding 10 k
. If it exceeds 10 k
, it is
recommended to connect a capacitor of approx. 0.1
μ
F to the analog input pin.
Except for the sampling period after starting A/D, the input leakage current of the analog input pin is less than 10
μ
A.
7. A/D Converter Glossary
Resolution
Analog-change that are identifiable with the A/D converter.
Linearity error
The deviation of the straight line connecting the zero transition point (“00 0000 0000”
“00 0000 0001”) with
the full-scale transition point (“11 1111 1111”
“11 1111 1110”) from actual conversion characteristics
Differential linearity error
The deviation of the input voltage needed to change the output code by 1 LSB from the theoretical voltage
Total error
The difference between theoretical and actual conversion values, caused by the zero transition error, full-scale
transition error, linearity error, quantization error, and noise.
(Continued)
3FF
3FE
3FD
004
003
002
001
V
OT
0.5 LSB
AV
SS
1 LSB
1.5 LSB
V
FST
AVR
3FF
3FE
3FD
004
003
002
001
AV
SS
V
NT
AVR
{1 LSB
×
N + 0.5 LSB}
1 LSB =
V
FST
– V
OT
1022
(V)
V
NT
{1 LSB
×
N + 0.5 LSB }
1 LSB
Theoreticall I/O characteristics
D
Analog input
D
Total error
Actual conversion
value
Actual conversion
value
Theoretical value
Analog input
Total error of digital output N =
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參數(shù)描述
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