M90E26
Description
The M90E26 is a high-performance wide-span energy metering chip.
Key Features
- Metering Features
- Accuracy of 0.1% for active energy and 0.2% for reactive energy over a dynamic range of 5000:1
- Temperature coefficient is 15 ppm/ ℃ (typical) for on-chip reference voltage
- Single-point calibration over a dynamic range of 5000:1 for active energy; no cali- bration needed for reactive energy
- Energy Meter Constant doubling at low current to save verification time
- Programmable startup and no-load power threshold
- Programmable L line and N line power difference threshold in anti-tampering mode. Other Features
- Built-in hysteresis for power-on reset
- Parameter diagnosis function and programmable interrupt output of the IRQ inter- rupt signal and the WarnOut signal
- Programmable voltage sag detection and zero-crossing output
