3.4 Hardware Setup

Hardware connections are as follows:

• The DAC0OUT pin of the device (PD6 on AVR EA) must be connected to the VREF pin of the device (PD7 on AVR EA) so the DAC output provides the reference voltage for the ADC
• The 1.8 kΩ fixed resistor must be connected from the DAC0OUT pin (PD6 on AVR EA) to the ADC0 AIN0 pin (PD0 on AVR EA)
• The RTD must be connected from the ADC0 AIN0 pin (PD0 on AVR EA) to ground
• The ADC0 AIN1 pin (PD1 on AVR EA) must be connected directly to ground