2.1.1 in 2/3 gain mode, values loose resolution

adafruit / Adafruit_ADS1X15

Driver for TI's ADS1015: 12-bit Differential or Single-Ended ADC with PGA and Comparator

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2.1.1 in 2/3 gain mode, values loose resolution #65

Closed OZ2CPU-thomas closed 3 years ago

OZ2CPU-thomas commented 3 years ago

at voltages over 5.7V to 6.1V the values loose the last digit of analog resolution tha tlast value become 0 it is supposed to handle 0-6,1V in a smooth full resolution way, at input voltages under 5.7V the data do contail values in the last digit my IC is ADS1115 so it is 16 bit

caternuson commented 3 years ago

The 6.144V FS range is for scaling only. The actual input range should not exceed VDD+0.3V. VDD absolute max is 5.5V.

OZ2CPU-thomas commented 3 years ago

THANKS !! this could explain it.. still a quite odd error, since it handle +/- voltages too ??