AMC131M01 24-Bit Isolated Delta-Sigma ADC Texas Instruments AMC131M01 24-Bit Isolated Delta-Sigma Analog-to-Digital Converter (ADC) is a precision, single-channel, data- and power-isolated, 24-bit, delta-sigma (ΔΣ) ADC. The AMC131M01 offers a wide dynamic range of energy-measurement-specific and low-power features for power metrology and energy metering applications. The ADC inputs can be directly interfaced with a shunt current sensor or a resistor-divider network because of the device's high input impedance.