STM32F103R4 STMicroelectronics, STM32F103R4 Datasheet - Page 72

• Manufacturer Part Number: STM32F103R4
• Description: Mainstream Performance line, ARM Cortex-M3 MCU with 16 Kbytes Flash, 72 MHz CPU, motor control, USB and CAN
• Manufacturer: STMicroelectronics

Specifications of STM32F103R4

• Conversion Range: 0 to 3.6 V
• Peripherals Supported: timers, ADC, SPIs, I2Cs and USARTs

Electrical characteristics
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Figure 35. Typical connection diagram using the ADC
1. Refer to
2. C
General PCB design guidelines
Power supply decoupling should be performed as shown
depending on whether V
ceramic (good quality). They should be placed them as close as possible to the chip.
Figure 36. Power supply and reference decoupling (V
1. The V
pad capacitance (roughly 7 pF). A high C
this, f
parasitic
ADC
V AIN
REF+
Table 46
represents the capacitance of the PCB (dependent on soldering and PCB layout quality) plus the
should be reduced.
R AIN (1)
input is available only on the TFBGA64 package.
for the values of R
C parasitic
AINx
REF+
is connected to V
Doc ID 15060 Rev 5
AIN
V DD
, R
parasitic
ADC
0.6 V
0.6 V
V T
V T
and C
value will downgrade conversion accuracy. To remedy
ADC
I L ±1 µA
DDA
.
or not. The 10 nF capacitors should be
R ADC (1)
Sample and hold ADC
converter
inFigure 36
REF+
STM32F103x4, STM32F103x6
C ADC (1)
STM32F103xx
converter
not connected to
12-bit
or
Figure
37,
ai14150c
V
DDA
)