This document describes how to convert the AD7400A into an isolated amplifier using a simple RC filter or more sophisticated active filters. The AD7400A is an isolated ΣΔ modulator typically used to measure current or monitor DC bus voltage in motor drives.
The AD74xx family of isolated ADCs is typically used with FPGAs or DSPs in motor drives. However, this document explains a straightforward method to convert the AD7400A into an isolated amplifier using a simple RC filter, suitable for use with less capable microcontrollers.
The usable linear input range is +250mV.
The typical output data rate is 10 MHz.
Yes, a simple RC filter has been shown to provide bandwidths up to 100 kHz.