TDK Semiconductor Corp. unveiled a new member of its power meter system-on-chip (SoC) product line. The new TDK 71M6511 integrates a 21 bit delta-sigma converter with three sensor channels, 32-bit compute engine, MCU, RTC, LCD driver, and precision voltage reference and is ideal for tamper resistant residential time-of-use (TOU) and pre-payment metering.

The device delivers linearity over 2000:1 current range, and under adverse environmental conditions. Requiring a single 3.3V capacitive supply circuit, the 71M6511 consumes less than 9 mA in mission and 4 micro Amps in battery backup modes, and it includes 64KB of FLASH, 7KB RAM, Real Time Clock (RTC), 5V LCD boost, 2+ UARTs, and an I²C interface.

Pricing for the new 71M6511 power meter IC starts at $2.60 in 10,000 unit quantities. The device can be produced in FLASH and ROM versions as well as 0.5% and 0.1% accuracy options and is now available for sampling in a 64-pin LQFP package.