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ADE7757:  Single Phase Energy Metering IC with Integrated Oscillator

The ADE7757 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 ADE7757 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 ...More

ADE7757:  Single Phase Energy Metering IC with Integrated Oscillator

Product Description

The ADE7757 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 ADE7757 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 ADE7757 provides instantaneous and average real power based on line current and voltage. The part specifications surpass the accuracy requirements as quoted in the IEC1036 standard. The only analog circuitry used in the ADE7757 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 ADE7757 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.

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  • Exceeds IEC61036/60687
  • Less than 0.1% Active Energy Error Over Dynamic Range of 1000:1
  • Active Energy Measurement
  • High Frequency Pulse Output
  • Voltage SAG and Zero-crossing Detection
  • Current sensor interface for current transformers or shunts
  • On-chip Temperature Sensor and Voltage Reference (2.4 V)
  • Low Power (25 mW typical)
  • Meter Type: Single Phase
  • Supply Current : 5mA
  • Package: 16-Lead SOIC
  • Active Energy Accuracy: 0.1% over 500:1 @25°C
  • Active Energy Bandwidth : 14kHz
  • Analog input range: +/-32mV or +/-500mV peak
  • Power Consumption : 20mW Typical
  • Reference Tempco : 20ppm/°C Typical

Functional Block Diagram for ADE7757

Similar Products

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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 $3.46
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 $3.66
ADE5566 Single Phase Irms, VA, Vrms, Watt Current Transformer, Shunt 8,052 I2C, Pulsed, SPI, UART Missing Neutral 64-Lead LQFP $3.34
ADE5569 Single Phase Irms, VA, Vrms, Watt Current Transformer, Rogowski Coil, Shunt 8,052 I2C, Pulsed, SPI, UART Missing Neutral 64-Lead LQFP $3.59
ADE7116 Single Phase Irms, VA, Vrms, Watt Current Transformer, Shunt 8,052 I2C, Pulsed, SPI, UART Current Fault, Missing Neutral 64-Lead LQFP $2.60
ADE7156 Single Phase Irms, VA, Vrms, Watt Current Transformer, Shunt 8,052 I2C, Pulsed, SPI, UART Current Fault, Missing Neutral 64-Lead LQFP $2.69
ADE7166 Single Phase Irms, VA, Vrms, Watt Current Transformer, Shunt 8,052 I2C, Pulsed, SPI, UART Current Fault, Missing Neutral 64-Lead LQFP $2.99
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 $3.37
ADE7518 Single Phase Irms, VA, VAR, Vrms, Watt Current Transformer, Shunt 8,052 I2C, Pulsed, SPI, UART - 64-Lead LQFP $2.82
ADE7566 Single Phase Irms, VA, Vrms, Watt Current Transformer, Shunt 8,052 I2C, Pulsed, SPI, UART Missing Neutral 64-Lead LQFP $2.87
ADE7569 Single Phase Irms, VA, VAR, Vrms, Watt Current Transformer, Rogowski Coil, Shunt 8,052 I2C, Pulsed, SPI, UART Missing Neutral 64-Lead LQFP $3.29
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 $2.00
ADE7761B Single Phase Watt Current Transformer, Shunt - Pulsed Current Fault, Missing Neutral 20-Lead SSOP $1.38
ADE7762 Polyphase Watt Current Transformer, Shunt - Pulsed - 24-Lead SOIC $4.70
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 -
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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.