Overview
The ADE7754ARRL, produced by Analog Devices Inc., is a high-accuracy polyphase electrical energy measurement IC. This integrated circuit is designed to measure active and apparent energy in various power metering applications, including 3-phase/4-wire, 3-phase/3-wire, and 4-wire delta configurations. The ADE7754 incorporates second-order Σ-Δ ADCs, reference circuitry, a temperature sensor, and all necessary signal processing to perform accurate energy measurements and rms calculations.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Supply Voltage (AVDD, DVDD) | 4.75 V to 5.25 V | ±5% of 5 V |
| Input High Voltage (VINH) | 2.4 V min | DVDD = 5 V ± 5% |
| Input Low Voltage (VINL) | 0.8 V max | DVDD = 5 V ± 5% |
| Input Current (IIN) | ±3 μA max, Typical 10 nA | VIN = 0 V to DVDD |
| Input Capacitance (CIN) | 10 pF max | |
| Output High Voltage (VOH) | 4 V min | DVDD = 5 V ± 5% |
| Output Low Voltage (VOL) | 1 V max | DVDD = 5 V ± 5% |
| Analog Input Voltage Range | –6 V to +6 V | To AGND |
| Operating Temperature Range | –40°C to +85°C | Industrial |
| Maximum Current Consumption (AIDD, DIDD) | 7 mA max (AIDD), 18 mA max (DIDD) | At 5.25 V |
Key Features
- High accuracy polyphase electrical energy measurement
- Second-order Σ-Δ ADCs for precise measurements
- On-chip temperature sensor with ±4°C typical accuracy after calibration
- User-programmable thresholds for line voltage SAG and overdrive detections
- SPI compatible serial interface with interrupt request line (IRQ)
- Pulse output with programmable frequency
- System calibration features including channel offset correction, phase calibration, and gain calibration
- Zero-crossing detection synchronized with the line voltage of each phase
- Waveform sample register for accessing ADC outputs
Applications
The ADE7754ARRL is suitable for various power metering services, including:
- 3-phase/4-wire power metering
- 3-phase/3-wire power metering
- 4-wire delta power metering
- Smart meters and advanced metering infrastructure (AMI)
- Industrial power monitoring systems
- Energy management systems
Q & A
- What is the primary function of the ADE7754ARRL?
The ADE7754ARRL is a polyphase electrical energy measurement IC designed to measure active and apparent energy in various power metering applications.
- What types of power metering configurations does the ADE7754ARRL support?
The ADE7754ARRL supports 3-phase/4-wire, 3-phase/3-wire, and 4-wire delta configurations.
- What is the operating temperature range of the ADE7754ARRL?
The operating temperature range is –40°C to +85°C.
- What is the supply voltage range for the ADE7754ARRL?
The supply voltage range is 4.75 V to 5.25 V (±5% of 5 V).
- Does the ADE7754ARRL have on-chip calibration features?
- How does the ADE7754ARRL handle voltage variations?
The ADE7754ARRL has user-programmable thresholds for detecting short duration low or high voltage variations and includes zero-crossing detection.
- What interface does the ADE7754ARRL use for data communication?
The ADE7754ARRL uses an SPI compatible serial interface with an interrupt request line (IRQ).
- Can the pulse output frequency be programmed?
- Is the ADE7754ARRL suitable for industrial applications?
- What is the maximum current consumption of the ADE7754ARRL?
The maximum current consumption is 7 mA (AIDD) and 18 mA (DIDD) at 5.25 V.
