ADE7751:  Single Phase Energy Metering IC with On-Chip Fault Detection

The ADE7751 is an accurate fault tolerant electrical energy measurement IC intended for use in two-wire distribution systems. It provides instantaneous and average real power based on line voltage and ...More

You may notice that Evaluation Tools, Application Notes and other supporting documents may refer to the AD7751. This material is still applicable to the ADE7751 because of the similarity between the two products.

ADE7751:  Single Phase Energy Metering IC with On-Chip Fault Detection

Product Description

The ADE7751 is an accurate fault tolerant electrical energy measurement IC intended for use in two-wire distribution systems. It provides instantaneous and average real power based on line voltage and current. The part specifications surpass the accuracy requirements as quoted in the IEC1036 standard. The only analog circuitry used on the ADE7751 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 ADE7751 incorporates a novel fault detection scheme, which both warns of fault conditions and allows the ADE7751 to continue accurate billing during a fault event. The ADE7751 does this by continuously monitoring both the phase and neutral (return) currents. A fault is indicated when these currents differ by more than 12.5%, and billing is continued using the larger of the two currents. Gain calibration between channels is adjusted external to this device. The ADE7751, available in SSOP packages, is pin compatible with the AD7751. It has the same functionalities as the AD7751. The only difference is that its low frequency (F1/F2) and high frequency (CF) outputs are synchronized under all load conditions.

Features

  • Exceeds IEC61036 with less than 0.1% active energy error over dynamic range of 500:1 at 25ºC
  • Continuous monitoring of Phase and Neutral
  • Fault and Reverse Power Outputs Indicate Potential Miswiring
  • Pulse Output for Direct Interface to Stepper Motor Counter
  • Additional High Frequency Pulse Output for Fast Calibration
  • On chip Voltage Reference (2.4 V)
  • Low Power (15 mW typical)

Diagram

ADE7751 Diagram
Functional Block Diagram for ADE7751

Specifications

Meter Type Single Phase
Supply Current 5.5mA
Package 24-Lead SSOP
Active Energy Accuracy 0.1% over 500:1 @25°C
Active Energy Bandwidth 14kHz
Analog input range +/-62.5mV to +/-1V peak
Power Consumption 15mW Typical
Reference Tempco 30ppm/°C Typical

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Part# Meter Type Measurement Parameters Current Sensor Interface On-Chip MCU Output Interface Anti-Tamper Support Package Price* (1000-4999)
ADE5166 Single Phase Irms, VA, Vrms, Watt Current Transformer, Shunt 8,052 I2C, Pulsed, SPI, UART Current Fault, Missing Neutral 64-Lead LQFP $3.29
ADE5169 Single Phase Irms, VA, VAR, Vrms, Watt Current Transformer, Rogowski Coil, Shunt 8,052 I2C, Pulsed, SPI, UART Current Fault, Missing Neutral 64-Lead LQFP $3.49
ADE5566 Single Phase Irms, VA, Vrms, Watt Current Transformer, Shunt 8,052 I2C, Pulsed, SPI, UART Missing Neutral 64-Lead LQFP $3.17
ADE5569 Single Phase Irms, VA, Vrms, Watt Current Transformer, Rogowski Coil, Shunt 8,052 I2C, Pulsed, SPI, UART Missing Neutral 64-Lead LQFP $3.41
ADE7116 Single Phase Irms, VA, Vrms, Watt Current Transformer, Shunt 8,052 I2C, Pulsed, SPI, UART Current Fault, Missing Neutral 64-Lead LQFP $2.48
ADE7156 Single Phase Irms, VA, Vrms, Watt Current Transformer, Shunt 8,052 I2C, Pulsed, SPI, UART Current Fault, Missing Neutral 64-Lead LQFP $2.56
ADE7166 Single Phase Irms, VA, Vrms, Watt Current Transformer, Shunt 8,052 I2C, Pulsed, SPI, UART Current Fault, Missing Neutral 64-Lead LQFP $2.84
ADE7169 Single Phase Irms, VA, VAR, Vrms, Watt Current Transformer, Rogowski Coil, Shunt 8,052 I2C, Pulsed, SPI, UART Current Fault, Missing Neutral 64-Lead LQFP $3.22
ADE7518 Single Phase Irms, VA, VAR, Vrms, Watt Current Transformer, Shunt 8,052 I2C, Pulsed, SPI, UART - 64-Lead LQFP $2.69
ADE7566 Single Phase Irms, VA, Vrms, Watt Current Transformer, Shunt 8,052 I2C, Pulsed, SPI, UART Missing Neutral 64-Lead LQFP $2.73
ADE7569 Single Phase Irms, VA, VAR, Vrms, Watt Current Transformer, Rogowski Coil, Shunt 8,052 I2C, Pulsed, SPI, UART Missing Neutral 64-Lead LQFP $3.14
ADE7751 Single Phase Watt Current Transformer, Shunt - Pulsed Current Fault 24-Lead SSOP $1.64
ADE7752A Polyphase Watt Current Transformer, Shunt - Pulsed - 24-Lead SOIC $4.35
ADE7752B Polyphase Watt Current Transformer, Shunt - Pulsed - 24-Lead SOIC $4.35
ADE7753 Single Phase Irms, VA, VAR, Vrms, Watt Current Transformer, Rogowski Coil, Shunt - Pulsed, SPI - 20-Lead SSOP $2.05
ADE7754 Polyphase Irms, VA, Vrms, Watt Current Transformer, Shunt - Pulsed, SPI - 24-Lead SOIC $5.06
ADE7755 Single Phase Watt Current Transformer, Shunt - Pulsed - 24-Lead PDIP, 24-Lead SSOP $1.55
ADE7757A Single Phase Watt Current Transformer, Shunt - Pulsed - 16-Lead SOIC $1.17
ADE7758 Polyphase Irms, VA, VAR, Vrms, Watt Current Transformer, Rogowski Coil, Shunt - Pulsed, SPI - 24-Lead SOIC $6.73
ADE7759 Single Phase Watt Current Transformer, Rogowski Coil, Shunt - Pulsed, SPI - 20-Lead SSOP $1.83
ADE7761B Single Phase Watt Current Transformer, Shunt - Pulsed Current Fault, Missing Neutral 20-Lead SSOP $1.32
ADE7762 Polyphase Watt Current Transformer, Shunt - Pulsed - 24-Lead SOIC $4.47
ADE7763 Single Phase Irms, VA, Vrms, Watt Current Transformer, Rogowski Coil, Shunt - Pulsed, SPI - 20-Lead SSOP $1.61
ADE7768 Single Phase Watt Current Transformer, Shunt - Pulsed - 16-Lead SOIC $1.17
ADE7769 Single Phase Watt Current Transformer, Shunt - Pulsed - 16-Lead SOIC $1.17
ADE7854 Polyphase Irms, VA, Vrms, Watt Current Transformer, Rogowski Coil, Shunt - HSDC, I2C, Pulsed, SPI - 40-Lead LFCSP -
ADE7878 Polyphase Irms, VA, VAR, Vrms, Watt Current Transformer, Rogowski Coil, Shunt - HSDC, I2C, Pulsed, SPI - 40-Lead LFCSP -

* The pricing listed here is provided only for budgetary purposes as recommended list price in U.S. Dollars in the United States ex factor per unit for the stated volume. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
** Pricing is currently unavailable. Click on the product number to see the Product Page for additional information.

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*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.
**Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.

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