Where I can get the diagram of connection of a thermal sensor TC1047AVNBTR to the ADC of microcontroller MSP430F4618 ? Also interestingly, on what formulas it calculate ? Thank you.
Well the data for the sensor is all over the internet, and its output characteristics?
You require an analogue input that reads the from .1 (-40°c) to 1.75v (+125°c), and higher?.
Max.
Vadc - tension measured ADC in volts
Radc - input resistance
Cadc - input capacity
Rt - thermoresistor
Vsrc - power supply output
R1 - the termination resistor
ADC - analog digitizer inputs
I have documents on the microcontroller: http://www.ti.com/lit/ug/slau213a/slau213a.pdf http://www.ti.com.cn/cn/lit/ds/slas675/slas675.pdf
Thank you. How to me to adapt this diagram for my sensor?
Alex: the first schematic fragment is all you need do. "ADC" connects to the A2D input and return of your micro.
Adding a Ct as in the 2nd figure is a good idea if you are reading noise. The exact value will depend on the resistors and the noise source, but something around 0.01 to 0.1 uF should do more good then harm.
I am limited in connection by RF1 and RF2 connectors of the experimental board. It isn't possible to find their characteristic to select to itself the necessary 2 outputs for my sensor (ground and power). Can you help me ? I looked for information in board and microcontroller documentation. I entered into search the words signed at pinches of these connectors on the diagram of a board. The power supply range of my sensor is from 2.5V
to 5.5V (there is a built-in stabilizator) and supply current 35-60 μA. I read this docs http://www.ti.com/tool/msp-exp430fg4618. Thank you.