In my circuit i would like to monitor also the negative voltage. from what i understand (correct me if I'm wrong) the AD7291 range is between 0 to 2.5V . i mean that if i want to sample -1V i need to invert the voltage to positive.
My question is if you have any similar component that can sample the negative.
Please post your query on precision ADC subspace. https://ez.analog.com/data_converters/precision_adcs/