Features and Benefits
- Exceeds IEC61036 with less than 0.1% active energy error over dynamic range of 500:1 at 25ºC
- Pulse Output for Direct Interface to Stepper Motor Counter
- Additional High Frequency Pulse Output for Fast Calibration
- On chip Temperature Sensor and Voltage Reference (2.4 V)
- Selectable Absolute Value or Arithmetic Sum of Phase Energies
- Very Low Power
The ADE7752A is an accurate active energy measurement IC intended for use in any 3-phase distribution system. It provides instantaneous and average real power based on line current and voltage. The part specifications surpass the accuracy requirements as quoted in the IEC61036 standard. The only analog circuitry used in the ADE7752A 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.
Gain calibration between channels is adjusted external to this device. The ADE7752A is available in 24-lead SOIC package. The power consumption of ADE7752A is lower than ADE7752. ADE7752A is recommended for all new designs and may be used as a direct replacement for ADE7752. The parts are functionality and pin compatible.
For additional technical information on your ADE7752A meter design, see AN-641: A 3-Phase Power Meter Based on the ADE7752 (pdf, 507,533 bytes).
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
NOTE: With lower power consumption than the ADE7752, the ADE7752A is recommended for all new designs. The parts are pin and functionality compatible.
This documentation describes the ADE7752A (ADE7752) evaluation kit hardware functionality. The ADE7752A (ADE7752) evaluation board, together with the ADE7752A (ADE7752) datasheet provides a complete evaluation platform for the ADE7752A (ADE7752). The evaluation board has been designed so that the ADE7752A (ADE7752) can be evaluated in the end application, i.e., Watt-Hour Meter. Using the appropriate transducers on the current channel (e.g., CT), the evaluation board can be connected to a test bench or high voltage (240V rms) test circuit. On-board resistor dividers networks provide the attenuation for the line voltages. This application note also describes how the current transducers should be connected for the best performance. The evaluation board requires two external 5V power supplies (one is required for isolation purposes) and the appropriate current transducers.
Circuit Notes (1)
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
Sample & Buy
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.