Demonstration Circuit - Analog Devices MICROCONVERTER ADUC7020 Reference Manual

ADuC7020 Evaluation Board Reference Guide
(5) RTD Temperature Demonstration Circuit
(5) P D C
OTENTIOMETER EMONSTRATION IRCUIT
AV
DD
AV
DD
ADC DAC
Application
Code
Figure 2: Circuit diagram of the RTD Circuit
Using the sample code pot.c in the code example folder, the variation in the potentiometer resistance can
be seen on the output LED.
Note that the internal and external reference are 2.5V, which gives an ADC input range of 0V to 2.5V in
single-ended mode. The potentiometer can give a voltage between 0V and AV = 3.3V.
DD
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Rev. 1.0 Analog Devices Inc., MicroConverter
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