Figure 6. Location Of Adc Input Connector Cn2; Figure 7. Provision For Filter Implementation - ST STM32L073Z-EVAL User Manual

UM1878 Hardware layout and configuration

Figure 6. Location of ADC input connector CN2

A low pass filter can be implemented for the ADC input by replacing R7 and C2 by
appropriate values depending on the application.

Figure 7. Provision for filter implementation

As the port PA5 can be used also a DAC output, the STM32L073Z-EVAL evaluation board
gives also provision to build an output filter structure by replacing R8 and C2 by appropriate
values.
Note that V pin must be connected to a reference voltage to allow a proper conversion
REF+
by the ADC. In general case, V is connected to V , then jumper JP5 should be
REF DD_MCU
closed.
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