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  • JBeale's Avatar
    03-16-2019, 07:42 PM
    Curious if you find this ADS1256 chip occasionally resets when you didn't want it to. Among other things, the reset means it returns to its default of 30 kHz sampling rate, so that can be a problem if you were using a...
    2 replies | 2151 view(s)
  • JBeale's Avatar
    02-20-2019, 03:04 AM
    If you care about precision, an old-fashioned resistive divider can be made quite accurate if you use precision resistors, they don't notice ESD and are probably OK with brief overvoltage. I don't know the specifics of...
    5 replies | 162 view(s)
  • JBeale's Avatar
    02-18-2019, 03:41 AM
    @mjs513 I don't know the best way to implement turning off the keeper. I think the default should be no keeper when a pin is used as analog input. I suppose there might be cases where you might want it on even when...
    2013 replies | 295380 view(s)
  • JBeale's Avatar
    02-16-2019, 06:46 PM
    You can use a built-in pullup or pulldown to keep an input from floating near Vdd/2 where MOS gates have excess power dissipation. A "keeper" automatically switches between pullup or pulldown depending if the pin is...
    2013 replies | 295380 view(s)
  • JBeale's Avatar
    02-16-2019, 05:27 PM
    Yes! Thank you, I can confirm that adding this line to my setup removed the glitch around count 2078 that I found earlier. Now when you look at the standard deviation along the curve you see only the typical...
    2013 replies | 295380 view(s)
  • JBeale's Avatar
    02-16-2019, 01:01 AM
    Just accepted my invite to the T4 Beta1 testers and got the hardware; thanks Paul & Robin! I tried measuring a slowly changing voltage using the ADC A0 input. My voltage source was 4300 uF of capacitance charged to...
    2013 replies | 295380 view(s)
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About JBeale

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TI ADS1256 8 CH, 24 bit A/D 03-16-2019 07:42 PM
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10-25-2012