Input range digital analog converter. Is the 1.8V adjustable?

Ricardo Andres Gomez

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Sep 13, 2017, 4:49:47 PM9/13/17

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I want to connect an analog output sensor from 0 to 5 volts. The adc by specifications has a range of 0 1.8V. Is it possible to change this range?

Gerald Coley

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Sep 13, 2017, 5:06:00 PM9/13/17

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No. It is fixed at 1.8V.

Gerald

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John Syne

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Sep 15, 2017, 3:31:39 PM9/15/17

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Geralds answer wasn’t complete. It is true that you cannot exceed the 1v8 input range of the ADC, but you can add a circuit before the ADC input that will convert the range from 0 to 5 volts -> 0 to 1v8. I would recommend that you ask a hardware engineer to assist you with this task as it is difficult to get this right if you have no experience in this area. Search Google for “ADC range opamp” for circuit examples.

Regards,

John

On Sep 13, 2017, at 8:53 AM, Ricardo Andres Gomez <ricardo.g...@gmail.com> wrote:

I want to connect an analog output sensor from 0 to 5 volts. The adc by specifications has a range of 0 1.8V. Is it possible to change this range?

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