KL15 ADC VREF Current

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KL15 ADC VREF Current

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RussellPead
Contributor II

I want to verify the TI REF3033 does not exceed the current or voltage tolerance specs.

1) For the KL15, what is the ADC VREF current min/max and voltage tolerance?

2) Are there any recommend external voltage references to use for the ADC?

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Hui_Ma
NXP TechSupport
NXP TechSupport

HI,

1> KL15 ADC VREFH voltage could up to 3.6V, same with VDDA voltage level. VREFL is same with VSSA. There is no ADC VREF pins current data.

2> In general, we recommend to use VREFH = VDDA, VREFL = VSSA.

Customer could check below link about how to design KL15 ADC module hardware and software to get more accuracy performance:

http://cache.freescale.com/files/microcontrollers/doc/app_note/AN4373.pdf


Wish it helps.
best regards
Ma Hui

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