UCD3138A: UCD3138ARGCR

LITHIYASHREE KANNAN

Prodigy 50 points

Part Number: UCD3138A

How the ADC error is calculated in this microcontroller.

I need to calculate the overall error from the current sensor to the microcontroller differential ADC pin

The current sensor i was using TMCS1123C1AQDVGR this part

For microcontroller i was using the UCD3138ARGCR this part.

Is there any calculation sheet available. Please kindly share.

1 month ago

0 Sean Xu 1 month ago

TI__Genius 14480 points

I guess you need understand how to translate adc result to real voltage. is this your question? Then you can calculate the error.

0 LITHIYASHREE KANNAN 27 days ago in reply to Sean Xu

Prodigy 50 points

Yes i need to know the ADC error calculation of these MCU UCD3138ARGCR when i connect the current sensor differential output to the differential pin of the MCU.

0 Sean Xu 26 days ago in reply to LITHIYASHREE KANNAN

TI__Genius 14480 points

Here is the formula to calculate sensed voltage : sensed voltage = ADCRESULT/4096 *2.5V. The error = Real voltage - sensed voltage.

**Attention** This is a public forum

MSP low-power microcontrollers

MSP low-power microcontroller forum

UCD3138A: UCD3138ARGCR