The new AVR DA family has a 12 bit differential ADC. My application involves reading small AC (sine-wave) signals from a CT with a burden resistor across it with one leg connected to ground. With a single-ended ADC, the signal gives a reading in the positive half of the sine wave and reads as 0 during the negative half. Does having a differential ADC mean that it can read the negative part of the signal also, the part which is actually a negative voltage w.r.t ground?
Joined: Thu. Nov 29, 2018
Posts: 62 View posts
Last Edited: Wed. Aug 5, 2020 - 02:40 PM