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ADE7953 28-Lead LFCSP (5mm x 5mm x 0.75mm w/ EP)
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ADE7953

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Single Phase Multifunction Metering IC With Neutral Current Measurement

Manufacturer :
Analog Devices, Inc
Package/Case :
28-Lead LFCSP (5mm x 5mm x 0.75mm w/ EP)
Product Categories :
Data Conversion , ADC (Analog to Digital Converters)
Datasheet:
ADE7953 PDF
RoHs Status:
Lead free / RoHS Compliant
In-stock:
1258

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ADE7953 Product Details

Single Phase Multifunction Metering IC With Neutral Current Measurement The ADE7953 is a high accuracy electrical energy measurement IC intended for single phase applications. It measures line voltage and current and calculates active, reactive, apparent energy and instantaneous RMS voltage and current. The device incorporates three sigma delta ADCs with a high accuracy energy measurement core. The third input channel simultaneously measures neutral current and

FEATURES
Single Phase, Multifunction Metering IC with Neutral Current Measurement ADE7953

The device incorporates three - ADCs with a high accuracy energy measurement core. The second input channel simultaneously measures neutral current and enables tamper detection and neutral current billing. The additional channel incorporates a complete signal path that allows a full range of measurements. Each input channel supports independent and flexible gain stages, making the device suitable for use with a variety of current sensors such as current transformers (CTs) and low value shunt resistors. Two on-chip integrators facilitate the use of Rogowski coil sensors. The ADE7953 provides access to on-chip meter registers via a variety of communication interfaces, including SPI, I2C, and UART. Two configurable low jitter pulse output pins provide outputs that are proportional to active, reactive, or apparent energy, as well as current and voltage rms. A full range of power quality information such as overcurrent, overvoltage, peak, and sag detection are accessible via the external IRQ pin. Independent active, reactive, and apparent no-load detections are included to prevent "meter creep." Dedicated reverse power (REVP), zerocrossing voltage (ZX), and zero-crossing current (ZX_I) pins are also provided. The ADE7953 energy metering IC operates from 3.3 V supply voltage and is available a 28-lead LFCSP.

Measures active, reactive, and apparent energy; sampled waveform; current and voltage rms Provides a second current input for neutral current measurement Less than 0.1% error in active and reactive energy measurement over a dynamic range of 3000:1 Less than 0.2% error in instantaneous IRMS and VRMS measurements over a dynamic range of 500:1 Provides apparent energy measurement and instantaneous power readings 1.5 kHz bandwidth operation Flexible PGA gain stage (up to �22) Includes internal integrator for use with Rogowski coil sensors SPI, I2C, or UART communication

The is a high accuracy electrical energy measurement IC intended for single phase applications. It measures line voltage and current and calculates active, reactive, and apparent energy, as well as instantaneous rms voltage and current.

REF LOW NOISE PRE-AMP IAP PGA IAN VP PGA VN IBP IBN CONFIGURATION AND CONTROL PGA ADC SINC AND DECIMATION FILTER ADC DSP ENERGY METERING PROCESSOR ZX_I PEAK ANGLE POWER FACTOR SAG ZX_I RESET VDD VINTA VINTD

AWATTHR BWATTHR AVARHR AVAHR BVARHR BVAHR

Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 �2010 Analog Devices, Inc. All rights reserved.

Features.............................................................................................. 1 General Description......................................................................... 1 Functional Block Diagram.............................................................. 1 Specifications..................................................................................... 4 Timing Characteristics................................................................ 6 Absolute Maximum Ratings............................................................ 8 ESD Caution.................................................................................. 8 Pin Configuration and Function Descriptions............................. 9 Typical Performance Characteristics........................................... 11 Test Circuit...................................................................................... 12 Terminology.................................................................................... 13 Theory of Operation...................................................................... 14 Analog Inputs.............................................................................. 14 Analog-to-Digital Conversion.................................................. 14 Current Channel ADCs............................................................. 16 Voltage Channel ADC............................................................... 17 Reference Circuit........................................................................ 17 Root Mean Square Measurement................................................. 18 Current Channel RMS Calculation.......................................... 18 Voltage Channel RMS Calculation........................................... 18 Active Power Calculation.............................................................. 19 Sign of Active Power Calculation............................................. 19 Active Energy Calculation......................................................... 20 Active Energy Accumulation Modes....................................... 22 Reactive Power Calculation........................................................... 23 Sign of Reactive Power Calculation......................................... 23 Reactive Energy Calculation..................................................... 24 Reactive Energy Accumulation Modes................................... 25 Apparent Power Calculation......................................................... 26 Apparent Energy Calculation................................................... 26 Ampere-Hour Accumulation.................................................... 27 Energy-to-Frequency Conversion................................................ 28 Energy Calibration......................................................................... 29 Gain Calibration......................................................................... 29 Phase Calibration....................................................................... 29 Offset Calibration....................................................................... 30 Period Measurement...................................................................... 31 Instantaneous Powers and Waveform Sampling........................ 32 Power Factor.................................................................................... 33

Using the Line Cycle Accumulation Mode to Determine the Power Factor............................................................................... 33 Power Factor with No-Load Detection................................... 33 Angle Measurement................................................................... 34 No-Load Detection........................................................................ 35 Setting the No-Load Thresholds.............................................. 35 Active Energy No-Load Detection........................................... 35 Reactive Energy No-Load Detection....................................... 36 Apparent Energy No-Load Detection..................................... 36 Zero-Crossing Detection............................................................... 37 Zero-Crossing Output Pins....................................................... 37 Zero-Crossing Interrupts.......................................................... 37 Zero-Crossing Timeout............................................................. 38 Zero-Crossing Threshold.......................................................... 38 Voltage Sag Detection.................................................................... 39 Setting the SAGCYC Register................................................... 39 Setting the SAGLVL Register.................................................... 39 Voltage Sag Interrupt................................................................. 39 Peak Detection................................................................................ 40 Indication of Power Direction...................................................... 41 Reverse Power............................................................................. 41 Sign Indication............................................................................ 41 Overcurrent and Overvoltage Detection..................................... 42 Setting the OVLVL and OILVL Registers............................... 42 Overvoltage and Overcurrent Interrupts................................ 42 Alternative Output Functions....................................................... 43 ADE7953 Interrupts....................................................................... 44 Primary Interrupts (Voltage Channel and Current Channel A).................................................................................. 44 Current Channel B Interrupts.................................................. 44 Communicating with the ADE7953............................................ 45 Communication Autodetection............................................... 45 Locking the Communication Interface................................... 45 SPI Interface................................................................................ 46 I2C Interface................................................................................ 47 UART Interface........................................................................... 49 Communication Verification and Security................................. 51 Write Protection......................................................................... 51 Communication Verification.................................................... 51 Checksum Register..................................................................... 52


Feature

  • Highly accurate; supports EN 50470-1, EN 50470-3, IEC 62053-21, IEC 62053-22, and IEC 62053-23 standards
  • Measures active, reactive, and apparent energy; sampled waveform; current and voltage rms
  • Provides a second current input for neutral current measurement
  • Less than 0.1% error in active and reactive energy
  • measurements over a dynamic range of 3000:1
  • Less than 0.2% error in instantaneous IRMS measurement over a dynamic range of 1000:1
  • Provides apparent energy measurement and instantaneous power readings
  • 1.23 kHz bandwidth operation
  • Flexible PGA gain stage (up to ×22)
  • Includes internal integrators for use with Rogowski coil sensors
  • SPI, I2C, or UART communication

ADE7953 Pinout
(Picture: Pinout)

ADE7953 Block Diagram
(Picture: Diagram)

Technical Parameters

Device Primary Function Single Phase Energy Metering IC Tamper Proof Support Yes
Measurements Available Apparent Power, Irms, Neutral Measurement, Total Active Power, Total Reactive Power, Vrms Special Features Waveform Sampling
Isense Type Current Transformer, Rogowski Coil, Shunt Data Output Interface CF Pulses, Serial I2C, Serial SPI, UART
Active Energy Accuracy% 0.1 Vs+min | V 3
MCU Core on chip No Vs+max | V 3.6

ADE7953 Documents

  • ADE7953 Technical Documentation/Data sheet

ADE7953 Related Products

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Analog Devices, Inc

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Analog Devices, Inc. was founded by two MIT graduates, Ray Stata and Matthew Lorber in 1965. The same year, the company released its first product, the model 101 op amp, which was a hockey-puck sized...
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