ADS1299: GPIO Output Current

Barrett Bryan

Part Number: ADS1299

What's the max current that the four digital IO / GPIO can source and sink? Is there characterization data for the GPIO at other datapoints (V_O at various I_O)?

over 6 years ago

0 Ryan Andrews over 6 years ago

TI__Guru 66186 points

Hello Barrett,

Thanks for your post.

Looks like this has come up before and we did not provide such data (https://e2e.ti.com/support/data-converters/f/73/p/330406/1151211 ). This spec is only meant to indicate that if you draw +/- 500 uA from the GPIO pin, then we guarentee a min/max voltag level with respect to DVDD. I would not expect to drive much more current than the 500 uA used in the test conditions. If more current is desired, I recommend bufffering the GPIO output.

Best Regards,

Data converters

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ADS1299: GPIO Output Current