参数资料
型号: STM32F103VCT7XXX
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, 0.50 MM PITCH, ROHS COMPLIANT, LQFP-100
文件页数: 120/122页
文件大小: 1599K
代理商: STM32F103VCT7XXX
STM32F103xC, STM32F103xD, STM32F103xE
Electrical characteristics
Doc ID 14611 Rev 6
5.3.18
12-bit ADC characteristics
Unless otherwise specified, the parameters given in Table 58 are derived from tests
performed under ambient temperature, fPCLK2 frequency and VDDA supply voltage
conditions summarized in Table 10.
Note:
It is recommended to perform a calibration after each power-up.
Table 58.
ADC characteristics
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VDDA
Power supply
2.4
3.6
V
VREF+
Positive reference voltage
2.4
VDDA
V
IVREF
Current on the VREF input
pin
160(1)
A
fADC
ADC clock frequency
0.6
14
MHz
fS
(2)
Sampling rate
0.05
1
MHz
fTRIG
External trigger frequency
fADC = 14 MHz
823
kHz
17
1/fADC
VAIN
Conversion voltage range(3)
0 (VSSA or VREF-
tied to ground)
VREF+
V
RAIN
External input impedance
Table 59 for details
50
k
Sampling switch resistance
1
k
Internal sample and hold
capacitor
8pF
Calibration time
fADC = 14 MHz
5.9
s
83
1/fADC
tlat
Injection trigger conversion
latency
fADC = 14 MHz
0.214
s
3(4)
1/fADC
tlatr
Regular trigger conversion
latency
fADC = 14 MHz
0.143
s
1/fADC
tS
Sampling time
fADC = 14 MHz
0.107
17.1
s
1.5
239.5
1/fADC
tSTAB
Power-up time
0
1
s
tCONV
Total conversion time
(including sampling time)
fADC = 14 MHz
1
18
s
14 to 252 (tS for sampling +12.5 for
successive approximation)
1/fADC
1.
Based on characterization results, not tested in production.
2.
Guaranteed by design, not tested in production.
3.
VREF+ can be internally connected to VDDA and VREF- can be internally connected to VSSA, depending on the package.
Refer to Section 3: Pinouts and pin descriptions for further details.
4.
For external triggers, a delay of 1/fPCLK2 must be added to the latency specified in Table 58.
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