In the new ZON M3 (MAX71315) single-phase electricity meter system-on-chip (SoC), Maxim Integrated has introduced a highly accurate, low-cost design system for e-meters and solid-state meters.
The chip integrates four 24-bit ADCs for 4-channel data collection and ±0,1% measurement accuracy over 5000:1 dynamic range. A 32-bit metrology compute engine ensures high-accuracy processing of all collected data. Its two touch-switch inputs eliminate mechanical switches and improve user experience, and its infrared communications interface eliminates the typical extra IR receiver module.
Also included on the device are multiple interfaces (SPI, I2C and 4 x USART), real-time clock (RTC) with temperature compensation and digital temperature sensor for highly accurate temperature compensation, and ample Flash and RAM memory for long-term service.
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