i.MX RT1020 16-bit resolution PWM

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i.MX RT1020 16-bit resolution PWM

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614678489
Contributor I

I wanna use the 16-bit resolution PWM output as a Digital-to-Analog Converter.

Compared with the conventional 16-bit resolution DAC, is there any difference in terms of the "accuracy" ?

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igorpadykov
NXP TechSupport
NXP TechSupport

Hi Fun

in conventional DAC "accuracy" is defined by precision reference voltage,

while using pwm one need take into account stability pwm frequency or

filtering components.

Best regards
igor
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614678489
Contributor I

Thanks, assume that the PWM frequency stability and the filtering components have been adjusted very well, can the PWM output achieve the same "accurary" with the conventional DAC ?

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igorpadykov
NXP TechSupport
NXP TechSupport

in general, yes.

Best regards
igor

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614678489
Contributor I

Gentleman, are you still there ? as to the filtering components, do you refer to the filters inside RT1020, or,  we should design the filtering circuits outside RT1020 ?

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igorpadykov
NXP TechSupport
NXP TechSupport

seems better to design the filtering circuits outside RT1020.

Best regards
igor

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400 Views
614678489
Contributor I

Thanks, as to the filtering components, do you refer to the filters inside RT1020, or,  we should design the filtering circuits outside RT1020 ?

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