The single-chip ADE51xx and ADE55xx metring devices integrate a energy measurement core, an 8051 microcontroller, a LCD driver with contrast control, a full hardware RTC (real-time clock), two UARTs (universal asynchronous receivers-transmitters) and intelligent battery management technology.
In addition to replacing six discrete ICs with a single SoC, the metring solutions maintain accurate time, sense temperature changes, run the LCD read-out and perform other critical system functions. In battery mode, current consumption is reduced to 1.5 microamps. ADE51xx differs from ADE55xx by offering two current inputs for anti-tampering detection and billing.
According to M. Lu, chief engineer, Chinese energy metre manufacturer, Linyang Electronics, “Analog Devices’ ADE55xx and ADE51xx devices not only increase the usable programme size above the current standard, they also push battery-mode functionality to new heights with an internal battery switch, a full RTC with automatic temperature curvature compensation and four LCD screen memories with automatic scrolling. These features make ADE55xx and ADE51xx a unique match to our metring needs.”
The ADE5169 and ADE5569 energy metres are sampling now, with full production scheduled for September 2008. The devices are available in 64-lead low-profile quad flat-pack packages and are priced at $3.49 per unit in 1,000-piece quantities. |
