Overview
The ADE9078ACPZ, manufactured by Analog Devices Inc., is a highly accurate, fully integrated energy metering Analog Front End (AFE) device. It is designed to interface with both current transformer (CT) and Rogowski coil sensors, enabling the development of a 3-phase metrology platform. This device is capable of achieving high performance for Class 1 up to Class 0.2 meters, making it suitable for a wide range of energy metering applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| VDD | 2.7 | 3.63 | V | ||
| Measurement Error per Phase (Total Active Energy) | 0.1% | 0.2% | Over a dynamic range of 5000 to 1, 10 sec accumulation; gain compensation only | ||
| Measurement Error per Phase (Total Reactive Energy) | 0.1% | 0.2% | Over a dynamic range of 5000 to 1, 10 sec accumulation; gain compensation only | ||
| Gain Error | ±0.3% | ±1% | At 100 Hz and 120 Hz | ||
| Gain Drift | ±3 ppm/°C | ||||
| Offset | ±0.36 mV | ±3.8 mV | |||
| Offset Drift | 0 | ±6 μV/°C | |||
| Channel Drift (PGA, ADC, Internal Voltage Reference) | ±7 ppm/°C | ±25 ppm/°C | PGA = 1, internal VREF | ||
| Differential Input Impedance (DC) | 330 kΩ | 366 kΩ | PGA = 1 | ||
| Internal Capacitance, CIN | 10 pF |
Key Features
- Highly accurate energy measurements with support for active and reactive energy standards (IEC 62053-21, IEC 62053-22, EN50470-3, OIML R46, ANSI C12.20, IEC 62053-23, IEC 62053-4).
- Integration of seven high-performance ADCs and a flexible DSP core.
- Programmable gain amplifiers (PGA) and ADCs for each phase.
- Integrated high-end reference with low drift over temperature (<±25 ppm/°C per channel).
- Flexible waveform buffer for harmonic analysis according to IEC 61000-4-7.
- High-speed communication port with 10 MHz serial peripheral interface (SPI).
- Power line surge immunity up to 8 kV/5 km.
- Two power modes (PSM1 and PSM2) for meter tampering detection.
Applications
- Polyphase meters.
- Power quality monitoring.
- Protective devices.
- Energy metering applications such as kWh metering, demand metering, and power factor metering circuits.
Q & A
- What is the ADE9078ACPZ used for?
The ADE9078ACPZ is used for energy metering applications, including polyphase meters, power quality monitoring, and protective devices. - What are the key specifications of the ADE9078ACPZ?
The device operates with a VDD range of 2.7V to 3.63V, has measurement errors as low as 0.1% for total active and reactive energy, and features gain drift of ±3 ppm/°C. - What types of sensors does the ADE9078ACPZ support?
The ADE9078ACPZ supports both current transformer (CT) and Rogowski coil sensors. - What communication interface does the ADE9078ACPZ use?
The device uses a 10 MHz serial peripheral interface (SPI) for high-speed communication. - What are the power modes of the ADE9078ACPZ?
The device has two power modes: PSM1 for fast measurement of current and voltage rms, and PSM2 for low power comparator-based tamper detection. - What is the package type of the ADE9078ACPZ?
The device is packaged in a 40-pin LFCSP (Lead Frame Chip Scale Package). - Does the ADE9078ACPZ have any surge immunity features?
Yes, the device has power line surge immunity up to 8 kV/5 km. - What standards does the ADE9078ACPZ comply with?
The device complies with various energy measurement standards including IEC 62053-21, IEC 62053-22, EN50470-3, OIML R46, ANSI C12.20, IEC 62053-23, and IEC 62053-4. - How accurate is the ADE9078ACPZ in terms of measurement error?
The device has a measurement error per phase of 0.1% to 0.2% over a dynamic range of 5000 to 1, depending on the accumulation time and gain compensation. - What is the temperature range for the ADE9078ACPZ?
The device operates over a temperature range of -40°C to +85°C.
