Hi,
I'm planning to measure temperature using a LM35 temperature sensor and a 8bit AD card.
https://www.electro-tech-online.com/custompdfs/2011/01/LM35-1.pdf
I want to have good precision in the measurement which only need to be in a narrow temperature interval, say 30C +/-5C
The lm35 sensor gives 10 mV/C. The AD measure device have 8bit resolution in the range 0-5V.
If I want to look at the above range, the voltage change will be 100 mV.
My question is, how to make an electronic circuit that can 'zoom' up the x to 100mV to be in the range of the AD, 0-5V? x would be a offset voltage that depends on where the temperature range 'starts'.
Thanks,
Totte
ps: also, if I want more precision than what the lm35 can give, what should one use?