Superior metering metrology is essential for accurate monitoring and billing. Additionally, meter manufacturers must consider cost in their designs, as millions of meters are being deployed throughout the globe.

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 improve user experience, and its infrared (IR) communications interface eliminates the typical extra IR receiver module. All the high integration reduces cost and improves user experience.

Features:

• Four Independent Metrology Channels

• 0.1% Accuracy Over 5000:1 Current Range with Integrated Metrology ADCs

• Two Remote ADC Interfaces

• Support Current Transformers, Rogowski Coils, and Shunts

• Four Pulse Outputs from the CE

• Digital Temperature Compensation for Metrology

• 45Hz to 65Hz Line Frequency Range with the Same Calibration

• Phase Compensation (±10°)

• 256kB Flash, 12kB SRAM (MAX71315)

• 128kB Flash, 12kB SRAM (MAX71314)

• Single-Cycle 32 x 32 + 64 Multiply-Accumulate Unit

• Low-Power 5ksps ADC for Environmental Monitoring

• RTC with Temperature Compensation

• On-Chip Digital Temperature Sensor

• LCD Controller Supporting Up to Eight Common Planes

• Two PWM Relay Control Channels with Programmable Frequency, Duty Cycle, and Ramp Time

• Two Touch Switch Inputs

• 1.75µA Sleep Mode

• SPI (Master and Slave), Master I2C, 4 x UARTs

• Two Smart Card Ports

• 38kHz IR Encoder/Decoder

• Up to 10 MIPS (at 10MHz)

• 100-Pin LQFP