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how to convert 0-10v adc signal to 0-3.3v

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raman00084

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my load cell sensor outputs 0-10v, but my dspic controller accepts only 0-3.3v adc signal only, how can i convert using opamp kindly help.


thank you
 

Hi,

No Opamp.

Two resistors as divider 3:1

Klaus
 

using resistor leads to signal loss is there any other method
 

Hi,

What do you mean with "signal loss"?

--> Nothing is lost: 0...10V divided by 3 gives 0...3.3V. Exactely what you asked for

Klaus
 

The resistor value have tolerance and further changes to temperature
 

Hi,

If you don't want to use resistors, then how do you think an Opamp could work? Without resistors?
The opamp has a lot of internal resistors and the circuit needs external resistors to set gain...

--> With an Opamp you definitely have a lot more error sources thanwith the simple two resistor solution.

Maybe you didn't give us the full specification..

Klaus
 

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