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UNI-DS3 Development System
MikroElektronika
page
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A digital-to-analog converter is a module used to convert a digital code into an analog voltage signal. The
UNI-DS3
development
system is equipped with the MCP4921 circuit which acts as a 12-bit digital-to-analog converter. This circuit provides a high accuracy
of conversion as well as a high-quality signal despite noises occuring when it is used in industrial applications. It communicates with
the microcontroller via SPI serial communication. In order to establish connection between these two circuits, it is necessary to set
switches 3 and 4 on the DIP switch SW3 to the ON position. It is also necessary to enable serial communication by setting switches 4
and 6 on the DIP switch SW4 to the ON position.
The function of jumper J15 is to determine voltage reference to be used in digital-to-analog conversion. By setting jumper to the 4.096
position, the MCP4921 circuit will be powered with the 4.096V voltage. By setting jumper J15 to the VCC position, the MCP4921 circuit
will be powered with the 5V power supply voltage.
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: DAC module connection schematic
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: DAC module
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: DAC connector
Connector for digital-
to-analog converter
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