The 71M6531D-IM/F is an energy meter IC in 68 pin QFN package. This highly integrated systems-on-chip (SOC) with an MPU core, RTC, FLASH and LCD driver. The patented Single Converter Technology with a 22bit delta-sigma ADC, four analogue inputs, digital temperature compensation, precision voltage reference, battery voltage monitor and 32bit computation engine (CE) supports a wide range of residential metering applications with very few low cost external components. A 32KHz crystal time base for the entire system and internal battery backup support for RAM and RTC further reduce system cost. The IC supports 2-wire, 3-wire single phase and dual phase residential metering along with tamper detection mechanisms. It offers single ended inputs for two current channels and two single ended voltage inputs.
Supply voltage range is 3V to 3.6V
Operating temperature range from -40°C to 85°C
Wh accuracy < 0.1% over 2000:1 current range, exceeds IEC62053/ANSI C12.20 standards
Four sensor inputs, four-quadrant metering & energy display during mains power failure
Low-jitter Wh & VARh plus 2 additional pulse test outputs (4 total, 10KHz maximum) with pulse count
Line frequency count for RTC, digital temperature compensation & independent 32bit CE
46Hz-64Hz line frequency range with same calibration, phase compensation (± 7°)
