Overview
The AD71056ARZ is a precision energy metering IC designed by Analog Devices Inc. for accurate single-phase electrical energy measurement. This integrated circuit is engineered to meet the stringent accuracy requirements of the IEC62053-21 standard, ensuring superior stability and accuracy in various environmental conditions. The AD71056ARZ features advanced digital signal processing, which includes multiplication and filtering in the digital domain, enhancing the overall measurement accuracy and reliability.
Key Specifications
| Parameter | Value | Unit | Test Conditions/Comments |
|---|---|---|---|
| Voltage Supply Range | 4.75 V to 5.25 V | V | For specified performance |
| Current Supply | 5 mA max (typically 4 mA) | mA | VDD = 5 V ± 5% |
| Operating Temperature Range | -40°C to 85°C | °C | |
| Input Impedance | 320 kΩ | kΩ | |
| Measurement Error | 0.1% | % | |
| Analog Input Voltage (V1) | ±30 mV | mV | With respect to V1N pin |
| Analog Input Voltage (V2) | ±165 mV | mV | Differential input |
| 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 |
Key Features
- High measurement accuracy with an error of 0.1%, enhancing billing accuracy and reliability.
- Low power consumption of 5 mA, reducing operational costs and supporting energy-efficient applications.
- Broad operating temperature range from -40°C to 85°C, ensuring reliability in diverse environments.
- High input impedance of 320 kΩ, minimizing circuit loading and promoting better performance.
- Internal phase matching circuitry and high-pass filter in the current channel to eliminate dc offsets and ensure accurate real power calculation.
- Integrated oscillator and reverse polarity indication for comprehensive energy metering capabilities.
Applications
The AD71056ARZ is predominantly used in residential and commercial energy metering systems. Its high accuracy, low power consumption, and broad operating temperature range make it an ideal choice for various power management and metering applications within its specified supply and temperature ranges.
Q & A
- What is the primary function of the AD71056ARZ?
The AD71056ARZ is a precision energy metering IC designed for accurate single-phase electrical energy measurement. - What is the operating temperature range of the AD71056ARZ?
The operating temperature range is from -40°C to 85°C. - What is the measurement error of the AD71056ARZ?
The measurement error is 0.1%. - What is the input impedance of the AD71056ARZ?
The input impedance is 320 kΩ. - What is the typical current supply of the AD71056ARZ?
The typical current supply is 4 mA, with a maximum of 5 mA. - What are the analog input voltage ranges for V1 and V2 channels?
The analog input voltage range for V1 is ±30 mV with respect to V1N, and for V2, it is ±165 mV differential. - Does the AD71056ARZ have internal ESD protection?
Yes, both V1 and V2 inputs have internal ESD protection circuitry, allowing for an overvoltage of ±6 V without risk of permanent damage. - What is the purpose of the high-pass filter in the current channel?
The high-pass filter in the current channel eliminates dc offsets from the current signal, ensuring accurate real power calculation. - How does the AD71056ARZ handle power supply monitoring?
The AD71056ARZ includes a power supply monitoring circuit on the VDD supply pin, remaining inactive until the supply voltage reaches approximately 4 V and remaining inactive if the supply falls below 4 V. - What are the typical applications of the AD71056ARZ?
The AD71056ARZ is used predominantly in residential and commercial energy metering systems.
