The AMC0x11S-Q1 is a precision, galvanically isolated amplifier with a 2.25V, high impedance input and single-ended output. The input stage of the device drives a second-order, delta-sigma (ΔΣ) modulator. The modulator converts the analog input signal into a digital bitstream that is transferred across the isolation barrier that separates the high side from the low side.

On the low-side, the received bitstream is processed by an analog filter that outputs a GND2-referenced, single-ended signal at the OUT pin. This single-ended output signal is proportional to the input signal. The output voltage at 0V input is set by the voltage applied to the REFIN pin.

The SiO₂-based, capacitive isolation barrier supports a high level of magnetic field immunity, as described in the ISO72x Digital Isolator Magnetic-Field Immunity application note. The digital modulation used in the AMC0x11S-Q1 transmits data across the isolation barrier. This modulation, and the isolation barrier characteristics, result in high reliability and high common-mode transient immunity.