ANALOG DEVICES ADE7754 Service Manual

The World Leader in High Performance Signal Processing Solutions

Multi-functional Polyphase

Energy Metering IC with Serial

Port Interface

ADE7754

Energy Measurement Group

Precision Converters (PRC) Division

ADE7754: A programmable solution for Polyphase Energy measurementTransducers

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ADE7754: Technology at a glance

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ADE7754: Overview of Functionalities

• Surpasses IEC1036 requirement. Less than 0.1% error

over wide dynamic range

• Supplies the following information:

 Active energy
 Sign of Reactive energy
 Apparent energy
 Simultaneous RMS calculation on the six analog inputs
 Peak Voltage and Current detection
 SAG Line Voltage detection
 Line Period
 Temperature

• Digital calibration

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ADE7754: Characteristics

• 24-pin SOIC package

• 5V Power Supply

• [-40 C; +85 C] Temperature Operating range

• 500mV maximum analog input range with PGA of 1, 2 or 4

on all channels

• External Clock frequency = 10MHz

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ADE7754: Block Diagram

• Analog Front end

• Current sensor connection

• Digital solution

• Active Energy

• Calibration Mode

• RMS measurements

• Apparent Energy

• Reactive Energy

• Power Line Quality

• Temperature sensor

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ADE7754: A validated Analog front end

• Analog Front end

• Current sensor connection

• Digital solution

• RMS measurements

• Active Energy

• Apparent Energy

• Calibration Mode

• Reactive Energy

• Power Line Quality

• Temperature sensor

• 16-bit accuracy from 2nd order ΣΔ ADCs

• Linearity error < 0.1% over wide dynamic

range (int. reference)

• Measurement Bandwidth 14 kHz

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ADE7754: Easy use of Current sensors

• Analog Front end

• Current sensor connection

• Digital solution

• RMS measurements

• Active Energy

• Apparent Energy

• Calibration Mode

• Input Gain up to 4

• Reactive Energy

• Power Line Quality

• Temperature sensor

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• Phase compensation for CT connection

~ +/-0.5°max in 0.02°increment @ 50Hz

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