MAX71071 Dual-Channel Isolated Metrology ADCs - Maxim
MAX71071, MAX71071H
Dual-Channel Isolated Metrology ADCs
Eliminate Current Transformers with Isolated ADC
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OVERVIEW
Description
The MAX71071/MAX71071H are dual-channel isolated
analog-to-digital converters (ADCs) for use with a
compatible MAX71xxx host. The device provides current
and voltage measurements to the host while the host
provides control, command, and power to the
MAX71071/MAX71071H. A pulse transformer provides
the isolated data, clock, and power path between the
device and host, eliminating the need for additional
isolation components in the measurement subsystem.
MAX71071, MAX71071H:
Block Diagram
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Key Features
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0.1% Accuracy Over 2000:1 Current Range
Exceeds IEC 62053/ANSI C12.20 Standards
Compatible with Shunt Resistors as Low as 50µΩ
On-Chip Temperature Sensor Enables Localized
Digital Temperature Compensation by the
MAX71xxx
Dual 24-Bit ADC
Powered from the MAX71xxx Using Pulses Sent
Through the Transformer
1.4mA Typical Consumption
On-Chip Power Monitoring
Industrial Temperature Range
Small 10-Pin µMAX
®
Package
Applications/Uses
• Industrial Energy
Meters
• Residential Energy
Meters
• Smart Grid
Monitoring
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7/11/2014
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