Single-chip energy metering devices

28 May 2008 Power Electronics / Power Management

Analog Devices is expanding its portfolio of energy metering solutions with the ADE51xx and ADE55xx single-chip metering devices, which are designed for the increasingly sophisticated communications networks used by today's energy markets.

Globally, solid-state energy meters are replacing failure-prone electromechanical systems, which are subject to meter tampering and cannot easily support new features such as remote meter-reading and time-of-use billing. These new features and the more robust metering networks they enable are demanding greater memory density to handle the energy industry's growing data volume. Analog Devices' new SoC (system-on-chip) energy meter devices feature 62 KBytes of on-chip Flash memory and 2 KBytes of RAM.

The single-chip ADE51xx and ADE55xx integrate a proven energy measurement core, an 8051 microcontroller, an LCD driver with contrast control, a full hardware RTC (realtime clock), two UARTs and intelligent battery management technology.

In battery mode, current consumption of the devices is reduced to 1,5 microamps. The ADE51xx differs from the ADE55xx by offering two current inputs for anti-tampering detection and billing.

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