High-integration, single-phase metering SoC

April 15, 2014 // By Graham Prophet
Maxim Integrated’s ZON M3 single-phase energy meter SoC enables ±0.1% accuracy over a 5000:1 dynamic range.

Designed as a highly accurate, low-cost design system for e-meters and solid-state meters, the ZON M3 energy-meter solution 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 (CE) ensures high-accuracy processing of all collected data. Its two touch-switch inputs eliminate mechanical switches, and its infrared (IR) communications interface eliminates the typical extra IR receiver module. All the high integration reduces cost and improves user experience.

The device offers;

Metering accuracy: over ±0.1% over 5000:1 dynamic range

High integration: integrated touch-switch inputs and IR communications; multiple interfaces (SPI, I 2C, and 4 USART) for design versatility; real-time clock (RTC) with temperature compensation and digital temperature sensor for highly accurate temperature compensation; ample Flash and RAM memory for long-term service

In a 100-pin LQFP package, the ZON M3 electricity meter costs $2.81 (1000).

Maxim Integrated; www.maximintegrated.com