UG-669
EVAL-ADuC7026 User Guide
Rev. B | Page 10 of 16
POTENTIOMETER DEMONSTRATION CIRCUIT
By using the sample code in pot.c located in the code example
folder on the accompanying CD, the variation in the
potentiometer resistance can be seen on the output LED.
Note that the internal and external reference are 2.5 V,
which gives an ADC input range of 0 V to 2.5 V in single-ended
mode. The potentiometer can give a voltage between 0 V and
AV
DD
= 3.3 V.
AVDD
AVDD
APPLICATION
CODE
DAC
ADC
05032-
003
Figure 4. Circuit Diagram of the RTD Circuit
