Metering

• Dual-channel Σ-Δ ADC.

• Active energy error < 0.1% within 5000:1 dynamic range, compliant with IEC62053-22:2003.

• Measures voltage RMS, current RMS, active power, and line frequency.

• Adjustable creep threshold.

• Reverse power indication.

• Reference voltage monitoring function.

Software Calibration

• Adjustable meter constant (HFConst).

• Gain and phase correction.

• Active energy offset calibration.

• Accelerated small-signal calibration.

• Automatic configuration verification.

Features

• SPI/UART interface.

• Power supply monitoring.

• Single +5V supply, typical power consumption 14mW.

• Internal 2.5V±1% reference, typical tempco 5ppm/℃.

• Green SOP24 package, pin-compatible with RN8209G; no neutral ADC input.

RN8208G measures active power, active energy, voltage RMS, current RMS, and line frequency.RN8208G supports fully digital gain, phase, and offset calibration. Active energy pulse is output from the PF pin.RN8208G provides an SPI/UART interface for easy communication with external MCUs.The internal power monitoring circuit ensures reliable operation during power-up and power-down.