Energy Measurement AFE

The MAX71020A is a single-chip analog front-end (AFE) for use in embedded energy measurement applications. It contains the compute engine (CE) found in Maxim Integrated’s fourth-generation meter system-on-chip (SoC) and an improved analog-to-digital converter (ADC). It interfaces to a host controller of choice over a SPI interface.

The MAX71020A comes in a 28-pin TQFN package.

Applications

* Building Automation Systems * Grid-Friendly Appliances and Smart Plugs * Power Distribution Units

* Best-in-Class Embedded Algorithms Support Highly Accurate Electricity Measurements

* Voltage, Current, and Frequency

* Active, Reactive, and Apparent Power/Energy

* Digital Temperature Compensation

* 40Hz–70Hz Line Frequency Range and Phase Compensation (±10°)

* Advanced AFE with Exceptional Accuracy and Temperature Stability

* Voltage Reference Temperature Coefficient: 40ppm/°C (max)

* On-Chip Digital Temperature Sensor

* 24-Bit 2nd Order Delta-Sigma ADCs with Differential and Single-Ended Inputs

* ±0.1% Wh Accuracy over 2000:1 Current Range

* Highly Integrated Features Support Compact Design Cycles and Reduced Bill of Materials

* Small, 28-Pin TQFN Package

* Digital Temperature Compensation

* Low Power Consumption

* Less Than 5mA (typ) Consumption at 3.3V

* Simple Host Interface

* SPI Slave

* Atomic Measurements Outputs

* DIO or SPI-Based Status Signals