STM32F102RB STMicroelectronics, STM32F102RB Datasheet - Page 60

• Manufacturer Part Number: STM32F102RB
• Description: Mainstream USB Access line, ARM Cortex-M3 MCU with 128 Kbytes Flash, 48 MHz CPU, USB FS
• Manufacturer: STMicroelectronics

Specifications of STM32F102RB

• Core: ARM 32-bit Cortex™-M3 CPU
• Peripherals Supported: timers, ADC, SPIs, I2Cs and USARTs
• Conversion Range: 0 to 3.6 V
• Systick Timer: 24-bit downcounter

Electrical characteristics
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Figure 27. ADC accuracy characteristics
Figure 28. Typical connection diagram using the ADC
1. Refer to
2. C
4095
4094
4093
pad capacitance (roughly 7 pF). A high C
this, f
7
6
5
4
3
2
1
parasitic
0
V
SSA
[1LSB
ADC
V AIN
1
Table 44
represents the capacitance of the PCB (dependent on soldering and PCB layout quality) plus the
E
should be reduced.
IDEAL
O
R AIN (1)
2
=
3
V
for the values of R
4096
DDA
C parasitic
4
AINx
5
1 LSB
E
6
T
IDEAL
Doc ID 15056 Rev 3
E
7
AIN
L
V DD
(2)
, R
parasitic
0.6 V
0.6 V
ADC
V T
V T
E
D
4093 4094 4095 4096
and C
(3)
value will downgrade conversion accuracy. To remedy
ADC
I L ±1 µA
(1)
.
E
G
V
DDA
R ADC (1)
Sample and hold ADC
converter
(1) Example of an actual transfer curve
(2) The ideal transfer curve
(3) End point correlation line
E
between the actual and the ideal transfer curves.
E
transition and the first ideal one.
E
transition and the last actual one.
E
between actual steps and the ideal one.
E
between any actual transition and the end point
correlation line.
T
O
G
D
L
=Total u nadjusted er ror: maximum deviation
=Integral linearity error:
=Offset e rror: deviation between the first actual
=Gain er ror: deviation between the last ideal
=Differential linearity error: maximum deviation
STM32F102x8, STM32F102xB
C ADC (1)
STM32F102
converter
12-bit
maximum deviation
ai14974b
ai15497