Hmm something must be wrong then, because according to the adafruit library, the default mode is single shot, and my input is only to A0 and GND, so I am not using the differential, and my input range measured with a DVM is +0.3 to +1.4v, but I am getting a -6000 to +6000 output.Maybe I misunderstand you.
Yup, connecting A1 to GND now gives me a 4000 - 29000 count range for my 0.3 -1.4v input which is the expected 15-bits. This is good for me.Thanks for your pointers.Much appreciated.
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