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113200493ADE7754_Features_March2003New
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
2 a
ADE7754: A programmable solution for Polyphase
Energy measurementTransducers
3 a
ADE7754: Technology at a glance
4 a
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
5 a
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
6 a
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
7 a
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
8 a
ADE7754: Easy use of Current sensors
? Input Gain up to 4
? Phase compensation for CT connection
~ +/-0.5°max in 0.02°increment @ 50Hz
? Analog Front end
? Current sensor connection
? Digital solution
? RMS measurements
? Active Energy
? Apparent Energy
? Calibration Mode
? Reactive Energy
? Power Line Quality
? Temperature sensor
9 a
ADE7754: A Digital solution
? Configuration done by writing ADE7754 registers at power up
? Only one point calibration to reac
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