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    Hi basheersubei, Looking through the stuff...

    Hi basheersubei,

    Looking through the stuff that Digikey offers, the LM4040AIZ-2.5/NOPB seems like a good candidate for you - through-hole, TO-92, etc. - and it's 0.1%, i.e. a whole order of...
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    You can use the ADC in single-ended mode - no...

    You can use the ADC in single-ended mode - no need for differential operation - in order to achieve 16 bits. You will have to be careful in the wiring, however, to achieve good results in order to...
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    No need to drop the IDE, you just have to start...

    No need to drop the IDE, you just have to start addressing the pins in a more direct fashion. On another page here I have started a thread re: how to get to differential measurements - I have yet to...
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    As a start, I would suggest a dedicated voltage...

    As a start, I would suggest a dedicated voltage source for the AREF pin and setup() to include a external setting for the AREF source. I would include plenty of external capacitors, a minimum of 10uF...
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    I'll let the more knowledgeable pipe up, but here...

    I'll let the more knowledgeable pipe up, but here is my first stab at answering your question:

    Since the Teensy 3 ADC uses a SAR circuit, you need to ensure that the input impedance isn't too high...
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    Thanks for the kind words but also allow some...

    Thanks for the kind words but also allow some time for the more qualified to respond. I'm just a ME that happens to enjoy this topic but there is a lot yet for me to learn about these wonderful...
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    The advantage of an external regulator and a...

    The advantage of an external regulator and a large capacitor is that spikes in power demand due to the ADC or other operations have less of an impact - the capacitors soak up the excess demand before...
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    Couple of thoughts...

    When you say you ran it off battery power - was that using the internal Voltage regulator via the VIN pin or were you supplying power to the 3.3V terminal directly? I ask as one potential source of...
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    How about a dedicated AREF?

    Depends on the rate of change, no? I thought the Atmel paper on oversampling and decimation was pretty interesting. But in general, this approach seems limited to slow-moving measurements.


    I...
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