Circuit Design About PT100

Hello all,

I want to utilize a PT100 to test an object's temperature. i have read a lot of materails about the PT100. however i just cann't draw a circuit i want. the requirements of the circuit are as follows:

My temperature range is 0 to 100C, which means PT100 resistance of 100ohm at minimum and 138.4ohm at maximum.
The output of the circuit is 1.0000V to 1.9999V. that'ss to say: when the temperature is 0C, the circuit should output 1.0000V voltage. and when 100C, 1.9999V output. the resolution of the temperature could be 1C,0.1C,0.01C. of course, the higher resolution, the better.
it's an one-off project, the simpler of the circuit, the better.

I would love some suggestions.

Read this.

and This

For simlicity I would use an LM35 (if it fits)

canadaelk said:

For simlicity I would use an LM35 (if it fits)

Click to expand...

i use the PT100 to measure the lipuid's temperature. it seems that the LM35 ia not appropriate. anyway, thank for your reply.