LP-AM243: ADC10B- ALX package-AM243x

Shaoxing Ke

Part Number: LP-AM243

Hi Experts,

I am asking for my customer here.

We found that AM243x-ALX only ADC10Bit. But when we look into the SDK ADC example based on LP-AM243X, all parameter calculations are set with 12 bits.

Is this correct? If yes, Is there any calibration or conversion done inside AM243x-ALX? If it is used normally, should I calculate by 10 Bit or 12 Bit?

over 2 years ago

0 Sri Vidya Gunturi over 2 years ago

TI__Expert 7586 points

We are looking into this.

Regards

Sri Vidya

0 Sri Vidya Gunturi over 2 years ago in reply to Sri Vidya Gunturi

TI__Expert 7586 points

I got the information from the HW Team.

For this you can use the same calculation for 12-bit.

Since ALX didn't have the pins available to support ADC_VREFHI and ADC_VREFLO, it is unable to meet the spec for 12-bit precision, but it's still the same 12-bit IP, so all calculations remain the same and they just get truncated 10-bits from 12-bit result.

You can test it at your end, by giving a constant 3.3V input to ADC Pin and see the debug prints.

I can also check at my end.

Regards

Sri Vidya

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LP-AM243: ADC10B- ALX package-AM243x