How to calibrate the dac on KL25z?

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How to calibrate the dac on KL25z?

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royal_agha
Contributor I

is there an automatic calibration function for the DAC? I know there is a calibration function for the ADC where the processor calculates the necessary calibration values. Is there something similar for the DAC? if not what is the best way to calibrate it especially with the non-linear behavior at very low voltage outputs(0.02 volts is the lowest I need )?

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jeremyzhou
NXP TechSupport
NXP TechSupport

Hi Royal,

For the better performance of DAC, I'd like to suggest refer for design as below to improve the bandwidth preformance.

And please place this capacitance as close as the corresponding DACx_OUT pin as possible on the layout.

Untitled.jpg

Hope it helps.
Have a great day,
Ping

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