Overview
The ADE7763ARSZ, produced by Analog Devices Inc., is a single-phase active and apparent energy metering IC designed for high accuracy in energy measurement applications. This integrated circuit features proprietary Analog-to-Digital Converters (ADCs) and a fixed-function Digital Signal Processor (DSP) to ensure precise measurements over a wide range of environmental conditions and time. The ADE7763 is particularly suited for applications requiring reliable and accurate energy metering, such as smart meters, industrial power monitoring, and residential energy management systems.
Key Specifications
| Parameter | Specification | Unit | Test Conditions/Comments |
|---|---|---|---|
| Input Clock Frequency | 1 MHz to 4 MHz | Hz | CLKIN |
| Reference Input Voltage Range | 2.2 V to 2.6 V | V | REFIN/OUT pin, nominal 2.4 V ± 8% |
| Reference Error | ±200 mV max | mV | |
| Temperature Coefficient | 30 ppm/°C typ | ppm/°C | |
| ADC Resolution | 16-bit | bits | Second-order Σ-∆ ADCs |
| Package Type | 20-lead SSOP | ||
| Bandwidth (–3 dB) | 140 Hz | Hz | CLKIN = 3.579545 MHz |
Key Features
- Proprietary ADCs and fixed-function DSP for high accuracy over large variations in environmental conditions and time.
- Two second-order, 16-bit Σ-∆ ADCs for voltage and current measurements.
- Selectable on-chip digital integrator for direct interface to di/dt current sensors like Rogowski coils.
- Internal temperature sensor and reference circuitry.
- System calibration features including channel offset correction, phase calibration, and power calibration.
- Pulse output frequency (CF) proportional to the active power.
- Zero-crossing output (ZX) synchronized to the zero-crossing point of the line voltage.
- Interrupt status register and interrupt enable register for event management.
- No-load threshold to prevent creep when there is no load.
- Positive-only accumulation mode for energy accumulation during positive power detection.
Applications
- Smart meters for residential and industrial energy monitoring.
- Industrial power monitoring and control systems.
- Energy management systems in commercial and residential buildings.
- Automated meter reading (AMR) and advanced metering infrastructure (AMI) systems.
- Power quality monitoring and analysis equipment.
Q & A
- What is the primary function of the ADE7763ARSZ IC?
The primary function of the ADE7763ARSZ is to measure single-phase active and apparent energy with high accuracy.
- What type of ADCs does the ADE7763ARSZ use?
The ADE7763ARSZ uses second-order, 16-bit Σ-∆ ADCs.
- What is the purpose of the on-chip digital integrator?
The on-chip digital integrator provides a direct interface to di/dt current sensors such as Rogowski coils, eliminating the need for an external analog integrator.
- How does the ADE7763ARSZ handle system calibration?
The ADE7763ARSZ includes features for channel offset correction, phase calibration, and power calibration to ensure high accuracy.
- What is the significance of the CF output in the ADE7763ARSZ?
The CF output is a pulse frequency that is proportional to the active power, used for operational and calibration purposes.
- What is the zero-crossing output (ZX) used for?
The zero-crossing output (ZX) produces a pulse synchronized to the zero-crossing point of the line voltage, used internally for line cycle active and apparent energy accumulation modes.
- How does the ADE7763ARSZ manage interrupts?
The ADE7763ARSZ has an interrupt status register and an interrupt enable register to manage and control interrupt events.
- What is the no-load threshold feature in the ADE7763ARSZ?
The no-load threshold ensures that the IC does not exhibit any creep when there is no load.
- Can the ADE7763ARSZ accumulate energy only during positive power detection?
Yes, the ADE7763ARSZ has a positive-only accumulation mode that allows energy accumulation only when positive power is detected.
- In what package is the ADE7763ARSZ available?
The ADE7763ARSZ is available in a 20-lead SSOP package.
