Precision measurement MCU with three 24-bit sigma-delta ADCs
Its defining feature is the three integrated 24-bit sigma-delta analog-to-digital converters, which target precision measurement applications such as energy metering, flow sensing, and industrial instrumentation.
The three 24-bit sigma-delta ADCs are the headline differentiator of the I2xx family. For a design that needs simultaneous sampling of multiple low-level sensor signals — such as voltage and current in a single-phase energy meter — these converters eliminate the need for an external ADC or a separate analog front-end. The 24-bit resolution provides the dynamic range for shunt-based current sensing without a programmable gain amplifier in many cases. This integration directly reduces BOM count and board area compared to pairing a general-purpose MCU with an external sigma-delta converter.
The 28-TSSOP package (0.173" body width, 4.40 mm) is a fine-pitch surface-mount footprint that suits automated assembly lines.