ADS1292R: Offset in output

Vala

Other Parts Discussed in Thread: ADS1292R

Hi,

Attached is an image of output of my circuit with the internal test signal of ADS1292R. Shouldn't the mean value be zeros? Where am I making a mistake? Do you think that can be due to the algorithm I wrote to convert the values to voltage?

Any help would be appreciated

Regards

over 8 years ago

0 Brian Pisani over 8 years ago

TI__Mastermind 38745 points

Hey V324O,

If you look at Figure 14 of the ADS1292R datasheet, you'll see that the offset is generally higher at low PGA gain. I looked at this on the EVM to verify this phenomenon. If you increase the PGA gain and divide your output by the gain, you'll see that the output stays much closer to a zero offset signal.

Regards,
Brian Pisani

0 Vala over 8 years ago in reply to Brian Pisani

Expert 1110 points

Hi Brian,

Thanks for the answer.

Regards

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ADS1292R: Offset in output