MAX78700 Datasheet, PDF (1/6 Pages) Maxim Integrated Products – Multichannel, Isolated, Precision ADC

MAX78700
Multichannel, Isolated, Precision ADC
General Description
The MAX78700 is an isolated analog-to-digital converter
(ADC) for use with a compatible MAX78xxx energy mea-
surement processor. The device provides current and
voltage measurements to the host while the host pro-
vides 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
Block Diagram
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 μMAX® Package
Ordering Information appears at end of data sheet.
For related parts and recommended products to use with this part, refer
to www.maximintegrated.com/MAX78700.related.
SYSTEM POWER
HOST INTERFACE
ENERGY
MEASUREMENT
PROCESSOR
“HOST”
POWER, TIMING,
CONTROL
ADC DATA
INAP
ISOP
INAN
ADC ^MUX
INBP
ISON
INBN
MAX78700
RESISTIVE
SENSORS
µMAX is a registered trademark of Maxim Integrated Products, Inc.
19-6565; Rev 0; 12/12