LM35DZ + Temp

[Darrel Taylor]

The LM35 puts out 10mv/°C.
1 "Step" of 10-bit A/D is 4.88mv.
So each "step" equals ~0.5°C

If you use a Vref of 2.5V, you could get 0.25°C resolution.

With an op-amp you might get down to 0.1°C res. if you don't need the full +150°C range.

Or you could use a DS18B20. That'll get 0.0625°C.
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[skimask]

The LM35 puts out 10mv/°C.
1 "Step" of 10-bit A/D is 4.88mv.
So each "step" equals ~0.5°C

If you use a Vref of 2.5V, you could get 0.25°C resolution.

With an op-amp you might get down to 0.1°C res. if you don't need the full +150°C range.

Or you could use a DS18B20. That'll get 0.0625°C.
<br>

Good call DT! I thought the datasheet said 1mv/C.

[savnik]

The LM35 puts out 10mv/°C.
1 "Step" of 10-bit A/D is 4.88mv.
So each "step" equals ~0.5°C

If you use a Vref of 2.5V, you could get 0.25°C resolution.

With an op-amp you might get down to 0.1°C res. if you don't need the full +150°C range.

Or you could use a DS18B20. That'll get 0.0625°C.
<br>

Thank you for answer
I have use this schematic

[savnik]

The LM35 puts out 10mv/°C.
1 "Step" of 10-bit A/D is 4.88mv.
So each "step" equals ~0.5°C

If you use a Vref of 2.5V, you could get 0.25°C resolution.

With an op-amp you might get down to 0.1°C res. if you don't need the full +150°C range.

Or you could use a DS18B20. That'll get 0.0625°C.
<br>

I want to measure from 0 - 100C

[skimask]

I want to measure from 0 - 100C

So what's the problem? The answer has already been given to you twice in the posts above, even if other parts of the code were wrong, if you'd take a few seconds to look over the display part of the above code, you'd find your answer, between that and the PBP manual, which does describe what you need...

[savnik]

I want to measure from 0 - 100C

I answer , don't ask