MAX78700

MAX78700 Multichannel, Isolated, Precision ADC General Description The MAX78700 is an isolated analog-to-digital converter (ADC) for use with a compatible MAX78xxx energy measurement processor. The device provides current and voltage measurements to the host while the host provides control, command, and power to the MAX78700. A pulse transformer provides the isolated data and power path between the device and host, eliminating the need for additional isolation components in the measurement subsystem. Applications ● Smart Grid-Friendly Equipment ● Lighting Control Systems ● Commercial and Industrial Automation ● Renewable Energy Systems ● Electric Vehicle Charging Systems Benefits and Features ● Better Than 0.5% Watt-Hour Accuracy Over Wide Dynamic Range Using a Single Calibration Point High-Resolution Delta-Sigma ADC Factory-Trimmed Voltage Reference and Die Temperature Sensor ● Simplified System Architecture No Power Supply Required Fully Powered by the Host with the Isolation Transformer Eliminates Data Isolation Components Reduced Form Factor and Bill of Materials ● Small 10-Pin μSOP Package Ordering Information appears at end of data sheet. Block Diagram SYSTEM POWER HOST INTERFACE ENERGY MEASUREMENT PROCESSOR “HOST” POWER, TIMING, CONTROL ADC DATA ISOP ADC MUX ISON MAX78700 INAP INAN INBP INBN RESISTIVE SENSORS Rev 1; 4/16 MAX78700 Multichannel, Isolated, Precision ADC Absolute Maximum Ratings (All voltages with respect to ...