MAX71020A

Energy Measurement AFE

Data Sheet (Rev. 0)

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Part Details

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

Evaluation Kits

Evaluation Kit for MAX71020A

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Features and Benefits

Allows Evaluation of the MAX71020A Embedded Energy Measurement Device in a Safe and Simple Manner
- Isolated SPI/USB for User Safety
- Windows Graphical User Interface (GUI) Handles All Common Tasks
- Easy Hook Up to Test Equipment or Other Test Environments
- Fully Assembled and Tested
- Precalibrated with Utility Meter Grade Equipment
Highly Accurate AFE for Testing
- AC 2000:1 Dynamic Current Range at 0.5% Accuracy
- DC Voltage and/or Current Measurement

Product Details

The MAX71020AEVK1# evaluation kit (EV kit) demon- strates the capabilities of the MAX71020A embedded energy measurement (EM) device. The EVK can measure AC and/or DC current and voltage utilizing a surface mount resistive shunt and resistive voltage divider.

The EV kit provides an isolated SPI interface to the device over USB. A provided Windows^® graphical user interface (GUI) handles translation from the USB to device-specific SPI protocols.

Applications