Analog Devices Debuts ADE7754 Energy Metering IC
Analog Devices Inc. (Wilmington, MA) announced its new ADE7754 energy metering IC, which targets the demands of the high-end, three-phase, multi-function, electricity metering market. The ADE7754 includes digital power, phase and offset calibration registers for all three-phases. The registers are adjustable through the serial interface and allow the manufacturer to quickly calibrate errors introduced by external components. The ADE7754 deletes the use of large voltage divider networks and swapping resistors to calibrate the meter.
The ADE7754 is an extension of the ADE product family, and features excellent accuracy with less than 0.1 percent linearity error over a dynamic range of 1,000 to 1, operating on a single 5V power supply. The analog front-end includes on-chip phase compensation, which is optimized for direct interface with current transformers. The ADE7754 is compatible with three-wire and four-wire distribution systems and can be used in three-phase commercial and industrial revenue meters or sub-meters, three-phase motors or generators, and industrial control applications. Additional features of the ADE7754 include no-load threshold; power supervisory circuitry; on-chip temperature sensor; line period measurement; negative power flow indication; peak voltage and current measurement; and high-frequency calibration output.
The ADE7754 is priced at $5.30 per unit in 1,000-piece quantities, and is offered in a 24-lead SOIC package. An evaluation board and software is available to facilitate performance and functionality verification.
