Microchip Technology, Inc. Energy Metering ATM90E25-YU-R

The ATM90E25-YU-R is a high-performance single-phase energy metering IC designed for applications requiring precise energy measurement. It complies with IEC62052-11 and IEC62053-21 standards, making it suitable for class 1 or class 2 watt-hour meters. The device offers an accuracy of 0.1% for active energy across a dynamic range of 5000:1, with a temperature coefficient of 15 ppm/¬8C for the on-chip reference voltage. This IC features programmable metering modes, including anti-tampering and flexible configurations for L line and N line current sampling. It supports both shunt resistor and current transformer (CT) for current measurement, and voltage measurement can be done using a resistor divider network or potential transformer (PT). The device operates with a single 3.3V power supply and is compatible with 5V digital inputs. The ATM90E25-YU-R includes a four-wire SPI interface for communication, along with built-in diagnostic functions and programmable interrupt outputs. It operates effectively within a temperature range of -40¬8C to +85¬8C and is packaged in a green SSOP28 format, making it suitable for various industrial applications.