參數(shù)資料
型號： ST72F324B
廠商： 意法半導體
英文描述： 5V Range 8-Bit MCU With 8 TO 32K FLASH/ROM, 10-Bit ADC, 4 Timers, SPI, SCI Interface(具有ICP,IAP,Nested Interrupt,TLI,ROP的8位MCU)
中文描述： 5V范圍內(nèi)的8位8到32K閃存/ ROM，10位ADC，4個計時器，SPI和SCI接口（具有比較方案，國際檢察官聯(lián)合會，嵌套中斷，中華語文研習所，人事登記的8位微控制器）
文件頁數(shù)： 146/167頁
文件大?。?/td> 1641K
代理商： ST72F324B
ST72324B
146/167
1
10-BIT ADC CHARACTERISTICS
(Cont’d)
12.13.3 ADC Accuracy
Conditions: V
DD
=5V
1)
Notes:
1. ADC Accuracy vs. Negative Injection Current: Injecting negative current may reduce the accuracy of the conversion
being performed on another analog input. The effect of negative injection current on robust pins is specified in
Section
12.13
.
Any positive injection current within the limits specified for I
INJ(PIN)
and
Σ
I
INJ(PIN)
in
Section 12.9
does not affect the ADC
accuracy.
2. Data based on characterization results, monitored in production to guarantee 99.73% within ± max value from -40°C
to 125°C ( ± 3
σ
distribution limits).
Figure 84. ADC Accuracy Characteristics
Symbol
Parameter
Conditions
Typ
Max
2)
Unit
|E
T
|
|E
O
|
|E
G
|
Total unadjusted error
1)
Offset error
1)
Gain Error
1)
3
2
4
3
3
LSB
0.5
|E
D
|
Differential linearity error
1)
CPU in run mode
@ f
ADC
2 MHz.
CPU in run mode
@ f
ADC
2 MHz.
1
2
|E
L
|
Integral linearity error
1)
1
2
E
O
E
G
1 LSB
IDEAL
1LSBIDEAL
VAREF
VSSA
–
=
V
in
(LSB
IDEAL
)
(1) Example of an actual transfer curve
(2) The ideal transfer curve
(3) End point correlation line
E
=Total Unadjusted Error: maximum deviation
between the actual and the ideal transfer curves.
E
=Offset Error: deviation between the first actual
transition and the first ideal one.
E
=Gain Error: deviation between the last ideal
transition and the last actual one.
E
=Differential Linearity Error: maximum deviation
between actual steps and the ideal one.
E
=Integral Linearity Error: maximum deviation
between any actual transition and the end point
correlation line.
Digital Result ADCDR
1023
1022
1021
5
4
3
2
1
0
V
SSA
7
6
1
2
3
4
5
6
7
1021 10221023 1024
(1)
(2)
E
T
E
D
E
L
(3)
V
AREF
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ST72F324BJ4B6 功能描述:8位微控制器 -MCU 5V RANGE 8B MCU RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT
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