AD71056AR
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Analog Devices Inc. AD71056AR

Manufacturer No:
AD71056AR
Manufacturer:
Analog Devices Inc.
Package:
Tube
Description:
IC ENERGY METER W/OSC 16-SOIC
Delivery:
Payment:
iso14001
iso45001
iso9001
iso13485

Product Introduction

Overview

The AD71056AR, produced by Analog Devices Inc., is a high-accuracy electrical energy metering IC designed to provide precise measurements in various energy metering applications. This IC integrates an on-chip oscillator, eliminating the need for an external crystal or resonator, which reduces the overall system cost. The AD71056AR supports direct interface with shunt resistors and complies with the accuracy requirements of the IEC62053-21 standard. It utilizes proprietary ADCs and DSP to ensure high accuracy over a wide range of environmental conditions and time.

Key Specifications

Parameter Value Unit Test Conditions/Comments
VDD (Supply Voltage) 4.75 V min, 5 V ± 5%, 5.25 V max V For specified performance
IDD (Supply Current) 5 mA max, Typically 4 mA mA VDD = 5 V ± 5%
Output High Voltage (VOH) 4 V min V ISOURCE = 5 mA, VDD = 5 V
Output Low Voltage (VOL) 0.5 V max V ISINK = 5 mA, VDD = 5 V
Frequency Output Error (CF) ±10 % ideal typ % External 2.5 V reference, V1 = 21.2 mV rms, V2 = 116.7 mV rms
ADC Resolution 16-bit Σ-Δ Oversampling rate of 450 kHz
Package Type 16-SOIC

Key Features

  • On-chip oscillator as clock source, eliminating the need for an external crystal or resonator.
  • High accuracy, supports 50 Hz and 60 Hz systems, and complies with IEC62053-21 standard.
  • Direct drive for electromechanical counters and 2-phase stepper motors (F1, F2).
  • Proprietary ADCs and DSP for high accuracy over large variations in environmental conditions and time.
  • On-chip power supply monitoring and creep protection (no load threshold).
  • On-chip reference 2.45 V (20 ppm/°C typical) with external overdrive capability.
  • Single 5 V supply, low power consumption (20 mW typical).
  • Internal phase matching circuitry and high-pass filter in the current channel to eliminate dc offsets.

Applications

  • Electrical energy metering systems requiring high accuracy and reliability.
  • Smart meters and advanced metering infrastructure (AMI).
  • Industrial power monitoring and control systems.
  • Residential and commercial energy measurement solutions.

Q & A

  1. What is the primary function of the AD71056AR IC?

    The AD71056AR is an energy metering IC designed for high-accuracy electrical energy measurement.

  2. Does the AD71056AR require an external oscillator?

    No, the AD71056AR has an on-chip oscillator, eliminating the need for an external crystal or resonator.

  3. What is the typical supply voltage for the AD71056AR?

    The typical supply voltage is 5 V, with a range of 4.75 V to 5.25 V.

  4. What type of ADCs are used in the AD71056AR?

    The AD71056AR uses 16-bit Σ-Δ ADCs with an oversampling rate of 450 kHz.

  5. How does the AD71056AR handle power supply monitoring?

    The IC includes an on-chip power supply monitoring circuit that keeps the device inactive if the supply voltage falls below approximately 4 V.

  6. What are the key outputs of the AD71056AR?

    The key outputs include F1 and F2 for average real power information and CF for instantaneous real power information.

  7. Does the AD71056AR support phase matching between voltage and current channels?

    Yes, the IC includes internal phase matching circuitry to ensure phase alignment between the voltage and current channels.

  8. What is the purpose of the high-pass filter in the current channel?

    The high-pass filter removes any dc component from the current signal, eliminating inaccuracies in real power calculations due to offsets.

  9. Is the AD71056AR suitable for use in extreme environmental conditions?

    Yes, the IC is designed to provide superior stability and accuracy over time and in extreme environmental conditions.

  10. What standard does the AD71056AR comply with?

    The AD71056AR complies with the IEC62053-21 standard for energy metering accuracy.

Product Attributes

Input Impedance:320kOhm
Measurement Error:0.1%
Voltage - I/O High:2.4V
Voltage - I/O Low:0.8V
Current - Supply:5mA
Voltage - Supply:4.75 V ~ 5.25 V
Meter Type:Single Phase
Operating Temperature:-40°C ~ 85°C
Mounting Type:Surface Mount
Package / Case:16-SOIC (0.154", 3.90mm Width)
Supplier Device Package:16-SOIC
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Similar Products

Part Number AD71056AR AD71056ARZ
Manufacturer Analog Devices Inc. Analog Devices Inc.
Product Status Obsolete Active
Input Impedance 320kOhm 320kOhm
Measurement Error 0.1% 0.1%
Voltage - I/O High 2.4V 2.4V
Voltage - I/O Low 0.8V 0.8V
Current - Supply 5mA 5mA
Voltage - Supply 4.75 V ~ 5.25 V 4.75 V ~ 5.25 V
Meter Type Single Phase Single Phase
Operating Temperature -40°C ~ 85°C -40°C ~ 85°C
Mounting Type Surface Mount Surface Mount
Package / Case 16-SOIC (0.154", 3.90mm Width) 16-SOIC (0.154", 3.90mm Width)
Supplier Device Package 16-SOIC 16-SOIC

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