Introduce offset

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OsFe_2822791
Level 3
Level 3
25 replies posted 10 replies posted 10 questions asked

Hello,

I´m measuring an analog signal which has a negative part but the ADC just convert among 0 and 1.024V, is possible in PSoC 4 (kit CY8CKIT044) introduce a kind of offset to adjust the signal between the interval that can convert the SAR?

Thank you!

Regards.

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1 Solution
VenkataD_41
Moderator
Moderator
Moderator
750 replies posted 500 replies posted 250 solutions authored

Hi,

What is the range of output voltages of your sensor?

You can use a resistor divider network/potentiometer and connect one end of resistor divider to +5V on the kit and second end of the resistor divider to your sensor signal.

Connect the potentiometer output to ADC. Please ensure that the voltage on the PSoC pin must not be less than 0volts.

Please refer the following discussion:

https://electronics.stackexchange.com/questions/3105/how-do-i-measure-a-negative-voltage-with-a-adc

Thanks

Ganesh

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1 Reply
VenkataD_41
Moderator
Moderator
Moderator
750 replies posted 500 replies posted 250 solutions authored

Hi,

What is the range of output voltages of your sensor?

You can use a resistor divider network/potentiometer and connect one end of resistor divider to +5V on the kit and second end of the resistor divider to your sensor signal.

Connect the potentiometer output to ADC. Please ensure that the voltage on the PSoC pin must not be less than 0volts.

Please refer the following discussion:

https://electronics.stackexchange.com/questions/3105/how-do-i-measure-a-negative-voltage-with-a-adc

Thanks

Ganesh

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