Using fully differential op amps as attenuators, Part 1: Differential bipolar input signals
Conditioning high-voltage input signals to drive ADCs from high-voltage sources can be challenging. How can a higher voltage signal like ±10 V be attenuated and level-shifted to match the significantly lower differential and common mode- voltage input required by the ADC? In this article, Part 1 of a three-part series, we consider a balanced, differential bipolar input signal and propose an architecture utilizing a fully differential operational amplifier (FDA) to accomplish the task.
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