M I K R O E L E K T R O N I K A S O F T W A R E A N D H A R D W A R E S O L U T I O N S F O R T H E E M B E D D E D W O R L D
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33
3
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dsPICPRO
USB
3
dsPICPRO3 User
’
s Manual
MikroElektronika
Development tools
DD
//AA
CC
OO
NN
VV
EE
RR
TT
EE
RR
D/A CONVERTER
Figure 40b.
D/A Converter back
Digital-to-analog converter is a semiconductor device used to convert a digital code into an
analog signal. A typical digital-to-analog converter outputs an analog signal, which is usu-
ally voltage or current, and proportional to the value of digital code provided to its inputs.
dsPICPRO3 has 12-bit output D/A converter MCP3204 with serial interface. In order to
enable D/A converter, switches 7 and 8 on SW3 have to be turned on, as well as switches
4, and 6 on SW4, which role is to enable SPI communication between microcontroller and
D/A converter. D/A converter is schematically shown in Fig. 41.
VREF
4.096V
ON-BOARD
VREF
4.096V
ON-BOARD
Figure 40a.
D/A Converter front
