Overview
The ADE7756AN is a high-accuracy electrical energy measurement IC designed by Analog Devices Inc. This component is specifically tailored for single-phase applications and is renowned for its precision and reliability in measuring electrical energy. The ADE7756AN integrates advanced signal processing capabilities, including two second-order sigma-delta ADCs, a reference circuit, and a temperature sensor. It provides comprehensive energy measurement solutions, making it an ideal choice for various industrial and commercial energy monitoring systems.
Key Specifications
| Parameter | Value | Unit | Test Conditions/Comments |
|---|---|---|---|
| Manufacturer | Analog Devices Inc. | ||
| Package | 20-DIP (0.300", 7.62mm) | ||
| Input Impedance | 390kOhm | ||
| Measurement Error | 0.1% | Over a dynamic range of 1000 to 1 | |
| Voltage - I/O High | 2.4V | DVDD = 5 V ± 5% | |
| Voltage - I/O Low | 0.8V | DVDD = 5 V ± 5% | |
| Current - Supply | 3mA | ||
| Voltage - Supply | 4.75 V ~ 5.25 V | ||
| Meter Type | Single Phase | ||
| Operating Temperature | -40°C ~ 85°C | ||
| Mounting Type | Through Hole |
Key Features
- High accuracy electrical energy measurement with less than 0.1% error over a dynamic range of 1000 to 1.
- On-chip user-programmable threshold for line voltage sag detection and power supply supervisory.
- Sampled waveform data (20 bits) and active energy (40 bits) available via a serial interface.
- An on-chip temperature sensor with ±3°C typical accuracy after calibration.
- Pulse output with programmable frequency and an interrupt request pin (IRQ) for early warning of register overflow and other conditions.
- System calibration features including channel offset correction, phase calibration, and power calibration.
- A zero crossing output (ZX) synchronized to the zero crossing point of the line voltage, useful for relay switching and calibration.
Applications
The ADE7756AN is suitable for a variety of applications, including:
- Industrial energy monitoring systems
- Smart grid and renewable energy systems
- Automated meter reading (AMR) and advanced metering infrastructure (AMI)
- Power quality monitoring and analysis
- Energy management systems in commercial and residential settings
Q & A
- What is the primary function of the ADE7756AN?
The ADE7756AN is a high-accuracy electrical energy measurement IC designed for single-phase applications.
- What is the measurement error of the ADE7756AN?
The measurement error is less than 0.1% over a dynamic range of 1000 to 1.
- What types of packages are available for the ADE7756AN?
The ADE7756AN is available in 20-lead DIP and 20-lead SSOP packages.
- What is the operating temperature range of the ADE7756AN?
The operating temperature range is -40°C to +85°C.
- Does the ADE7756AN have a built-in temperature sensor?
Yes, it includes an on-chip temperature sensor with ±3°C typical accuracy after calibration.
- How does the ADE7756AN provide calibration features?
The ADE7756AN provides system calibration features including channel offset correction, phase calibration, and power calibration.
- What is the purpose of the zero crossing output (ZX) in the ADE7756AN?
The zero crossing output (ZX) is synchronized to the zero crossing point of the line voltage and is useful for relay switching and calibration.
- Does the ADE7756AN have an interrupt request feature?
Yes, it has an interrupt request pin (IRQ) that becomes active when the accumulated real power register is half-full or overflows.
- What is the typical power consumption of the ADE7756AN?
The typical power consumption is 25 mW.
- Is the ADE7756AN suitable for industrial energy monitoring?
Yes, it is highly suitable for industrial energy monitoring systems due to its high accuracy and reliability.
