ADS131M04/ADS131M04-Q1 4-Channel ADC Texas Instruments ADS131M04/ADS131M04-Q1 4-Channel Analog-to-Digital Converter (ADC) is a 24-bit delta-sigma (ΔΣ) ADC that offers a wide dynamic range, low power, and energy-measurement-specific features. This feature makes these devices excellent for energy metering, power metrology, and circuit breaker applications. The ADC inputs can be directly interfaced to a resistor-divider network or a power transformer to measure voltage or to a current transformer or a Rogowski coil to measure current.