Microcontroller sensor interfacing exercises

---

K thermocouple temperature sensor

• sensitivity: 40 uV/C, offset: 0V at 0C
• output voltage range: -0.008 V to 0.024 V

ADC

• Voltage reference: 2.048 V
• Number of bits: 16
• Jusfitication: right

Signal conditioning

• amplifier
• amplification: 42
• offset: 1.024 V

To do:

• Write a function that calculates the sensed value as a function of the ADC code!

Test data:

sensor input	sensor output	ADC input	ADC output	calculated sensor input
67 C	0.00268 V	1.13656 V	36370	67.0015 C
243 C	0.00972 V	1.43224 V	45832	243.006 C
388 C	0.01552 V	1.67584 V	53627	388.002 C