ADE7768 Single Phase Energy Metering IC with Integrated Oscillator and Positive Only Accumulation

The small analog input full-scale allows the chip to interface to low value shunt resistances without losing dynamic range. The ADE7768 is available in 16-lead SOIC narrow-body package. The Application Note AN-679 can be used as a basis for a description of an IEC61036 low cost, watt-hour meter reference design. NOTE: For polyphase system designs, the ADE7752A is recommended.

The ADE7768 is an accurate electrical energy measurement integrated circuit. It is a pin reduction version of ADE7755 with an enhancement of a precise oscillator circuit that serves as a clock source to the chip. The ADE7768 eliminates the cost of an external crystal or resonator, thus reducing the overall cost of a meter built with this IC. The chip directly interfaces with shunt resistor.

The ADE7768 provides instantaneous and average real power based on line current and voltage, and only accumulates when the power is positive – ignoring negative power. The part specifications surpass the accuracy requirements as quoted in the IEC61036 standard. The only analog circuitry used in the ADE7768 is in the ADCs and reference circuit. All other signal processing (e.g., multiplication and filtering) is carried out in the digital domain. This approach provides superior stability and accuracy over extremes in environmental conditions and over time.

The small analog input full-scale allows the chip to interface to low value shunt resistances without losing dynamic range. The ADE7768 is available in 16-lead SOIC narrow-body package.

The Application Note AN-679 can be used as a basis for a description of an IEC61036 low cost, watt-hour meter reference design.

NOTE: For polyphase system designs, the ADE7752A is recommended.

Features and Benefits
  • Exceeds IEC61036/60687
  • Less than 0.1% Active Energy Error Over Dynamic Range of 500:1
  • Active Energy Measurement
  • High Frequency Pulse Output
  • Current sensor interface for current transformers or shunts
  • On-chip Temperature Sensor and Voltage Reference (2.5 V)
  • Low Power (20 mW typical)
  • Reverse Power Indication (REVP)
Analog to Digital Converters
Data Sheets
Documentnote
ADE7768: Energy Metering IC with Integrated Oscillator and Positive Power Accumulation Data Sheet (Rev. A)PDF 398 kB
Product Highlight
Documentnote
ADE Product Family OverviewPDF 1.39 M
Energy Measurement SolutionsPDF 2 M
Frequently Asked Questions
Documentnote
Order Information
Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
ADE7768ARZ Last Time Buy16 ld SOICOTH 48-40 to 85C1.171.17Y
ADE7768ARZ-RL Last Time Buy16 ld SOICREEL 2500-40 to 85C01.17Y
Reference Materials
ADE7768: Energy Metering IC with Integrated Oscillator and Positive Power Accumulation Data Sheet (Rev. A) ade7768
ADE Product Family Overview ade7768
Energy Measurement Solutions ade7768
IC Technology and Failure Mechanisms - Understanding Reliability Standards... ade7755
Measuring Harmonic Energy with a Solid State Energy Meter ade7755