The AMC3301QDWERQ1 is an AEC-Q100 automotive-qualified isolated delta-sigma modulator in VSSOP-8 with 7000Vpk reinforced galvanic isolation. The high-side (isolated) circuit contains a second-order delta-sigma modulator that continuously samples the differential analog input (AINP-AINN, +/-250mV range) at an internal 21MHz rate. The modulator produces a 1-bit data stream whose duty cycle is proportional to the input voltage, using a 2nd-order noise-shaping loop that pushes quantization noise to high frequencies. This bitstream crosses the isolation barrier via integrated capacitive coupling elements. The low-side circuit outputs the 1-bit stream on DOUT synchronized to CLKOUT (21MHz). An external digital filter (sinc3, typically implemented in MCU/CPLD) decimates the bitstream into a 16-bit result. The reinforced isolation is rated at 7000Vpk surge per IEC 60747-5-5.