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参数资料
型号： STM32F205RFT7XXX
厂商： STMICROELECTRONICS
元件分类： 微控制器/微处理器
英文描述： 32-BIT, FLASH, 120 MHz, RISC MICROCONTROLLER, PQFP64
封装： 10 X 10 MM, ROHS COMPLIANT, LQFP-64
文件页数： 12/163页
文件大小： 2275K
代理商： STM32F205RFT7XXX
STM32F205xx, STM32F207xx
Electrical characteristics
Doc ID 15818 Rev 7
109/163
5.3.20
12-bit ADC characteristics
Unless otherwise specified, the parameters given in Table 61 are derived from tests
performed under the ambient temperature, fPCLK2 frequency and VDDA supply voltage
conditions summarized in Table 10.
Table 61.
ADC characteristics(1)
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VDDA
Power supply
1.8(2)
-3.6
V
VREF+
Positive reference voltage
1.8(2)(3)
-VDDA
V
fADC
ADC clock frequency
VDDA = 1.8
(2) to 2.4 V
0.6
-
15
MHz
VDDA = 2.4 to 3.6 V
0.6
-
30
MHz
fTRIG
(4)
External trigger frequency
fADC = 30 MHz
-
823
kHz
--
17
1/fADC
VAIN
Conversion voltage range(5)
0 (VSSA or VREF-
tied to ground)
-VREF+
V
RAIN
(4)
External input impedance
See Equation 1 for
details
--
50
k
Ω
RADC
(4)(6) Sampling switch resistance
1.5
-
6
k
Ω
CADC
(4)
Internal sample and hold
capacitor
4-
TBD
pF
tlat
(4)
Injection trigger conversion
latency
fADC = 30 MHz
-
0.100
s
--
3(7)
1/fADC
tlatr
(4)
Regular trigger conversion latency
fADC = 30 MHz
-
0.067
s
--
2(7)
1/fADC
tS
(4)
Sampling time
fADC = 30 MHz
0.100
-
16
s
3
-
480
1/fADC
tSTAB
(4)
Power-up time
-
2
3
s
tCONV
(4)
Total conversion time (including
sampling time)
fADC = 30 MHz
12-bit resolution
0.5
-
16.40
s
fADC = 30 MHz
10-bit resolution
0.43
-
16.34
s
fADC = 30 MHz
8-bit resolution
0.37
-
16.27
s
fADC = 30 MHz
6-bit resolution
0.3
-
16.20
s
9 to 492 (tS for sampling +n-bit resolution for successive
approximation)
1/fADC
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