参数资料
型号: STM32F105VCT7TR
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 32-BIT, FLASH, 72 MHz, RISC MICROCONTROLLER, PQFP100
封装: 14 X 14 MM, ROHS COMPLIANT, LQFP-100
文件页数: 69/95页
文件大小: 1007K
代理商: STM32F105VCT7TR
STM32F105xx, STM32F107xx
Electrical characteristics
Doc ID 15274 Rev 4
71/95
Figure 29.
ADC accuracy characteristics
Figure 30.
Typical connection diagram using the ADC
1. Refer to Table 51 for the values of RAIN, RADC and CADC.
2. Cparasitic represents the capacitance of the PCB (dependent on soldering and PCB layout quality) plus the
pad capacitance (roughly 7 pF). A high Cparasitic value will downgrade conversion accuracy. To remedy
this, fADC should be reduced.
EO
EG
1LSBIDEAL
(1) Example of an actual transfer curve
(2) The ideal transfer curve
(3) End point correlation line
ET=Total Unadjusted Error: maximum deviation
between the actual and the ideal transfer curves.
EO=Offset Error: deviation between the first actual
transition and the first ideal one.
EG=Gain Error: deviation between the last ideal
transition and the last actual one.
ED=Differential Linearity Error: maximum deviation
between actual steps and the ideal one.
EL=Integral Linearity Error: maximum deviation
between any actual transition and the end point
correlation line.
4095
4094
4093
5
4
3
2
1
0
7
6
1
23
456
7
4093 4094 4095 4096
(1)
(2)
ET
ED
EL
(3)
VDDA
VSSA
ai14395b
VREF+
4096
(or
depending on package)]
VDDA
4096
[1LSBIDEAL =
ai14139d
STM32F10xxx
VDD
AINx
IL±1 A
0.6 V
VT
RAIN(1)
Cparasitic
VAIN
0.6 V
VT
RADC(1)
CADC(1)
12-bit
converter
Sample and hold ADC
converter
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