Analog Input; Potentiometer; Figure 6. Stm32373C-Eval Potentiometer - ST STM32373C-EVAL User Manual

Hardware layout and configuration
2.20

Analog input

Three 2-pin connectors, CN9, CN10 and CN11, are connected to STM32F373VCT6 as
external analog inputs or DAC outputs.
CN9 connected to Sigma Delta ADC through PE11: a low-pass filter can be implemented for
the 2-pin connector by replacing R212 and C118 for ADC input with the right values of the
resistor and capacitor as required by end user's application.
CN10 connected to ADC SAR input and DAC output through PA5: a low-pass filter can be
implemented for the 2-pin connector by replacing R42 and C21 for ADC input or replacing
R40 and C21 for DAC output with the right values of the resistor and capacitor as required
by end user's application.
CN11 connected to ADC SAR input and DAC output through PA4: a low-pass filter can be
implemented for the 2-pin connector by replacing R45 and C26 for ADC input or replacing
R43 and C26 for DAC output with the right values of the resistor and capacitor as required
by end user's application.
2.21

Potentiometer

A 10K ohm potentiometer RV3 is connected to comparator 2 through PA3 and ADC through
PB1 (default connection), as shown in
Figure 6.
VDDA
GND
28/66
STM32373C-EVAL potentiometer
PB1
0
0
RV3 PA3
NC
Doc ID 023566 Rev 1
Figure 6.
ADC_SAR_AIN9
ADC_SD1_AIN3P-AIN2M
GP comparator
GPCOMP2_IN+
GPCOMP2_IN-
Band gap 1.2 V
UM1564
+
OUT
-
MS30943V1