ADE9078 High Performance Polyphase Energy Metering AFE
The ADE9078 is a highly accurate, fully integrated energy metering device. Interfacing with both current transformer (CT) and Rogowski coil sensors, the ADE9078 enables users to develop a 3-phase metrology platform, which achieves high performance for Class 1 up to Class 0.2 meters.
The ADE9078 integrates seven high performances ADCs and a flexible DSP core. An integrated high end reference ensures low drift over temperature with a combined drift of less than ±25 ppm/°C maximum per channel, each of which includes a programmable gain amplifier (PGA) and ADC.
The ADE9078 offers an integrated flexible waveform buffer that stores samples at a fixed data rate or a sampling rate that varies based on line frequency to ensure 64 points per line cycle. These two options make it easy to implement harmonic analysis in an external processor according to IEC 61000-4-7.
Two power modes are provided to enable detection of meter tampering: PSM2 uses a low power comparator to compare current channels to a threshold and indicates whether it is exceeded on the IRQ0 and IRQ1 outputs; PSM1 enables fast measurement of current and voltage rms (xVRMS and xIRMS), active power, and VAR during a tamper.
The ADE9078 allows advanced and highly accurate energy measurements, enabling one platform to cover a wide range of meters, through a combination of various high end metrology features and superior analog performance.
Applications
- Polyphase meters
- Power quality monitoring
- Protective device
Features and Benefits7 high performance analog-to-digital converters (ADCs)- 101 dB signal-to-noise ratio (SNR)
- 10,000:1 dynamic range
- Wide input range: ±1 V, 0.707 V rms full scale
- Differential inputs
101 dB signal-to-noise ratio (SNR)10,000:1 dynamic rangeWide input range: ±1 V, 0.707 V rms full scaleDifferential inputs±25 ppm/°C maximum channel temperature drift (including ADC, internal VREF, and PGA drift) enabling Class 0.2 meters with standard external componentsPower quality measurements- Line frequency: 1 measurement per phase
- Zero crossing detection, zero-crossing timeout
- Phase angle measurements
Line frequency: 1 measurement per phaseZero crossing detection, zero-crossing timeoutPhase angle measurementsSupports current transformers (CTs) and Rogowski coil (di/dt) sensors- Multiple range phase/gain compensation for CTs
- Digital integrator for Rogowski coils
Multiple range phase/gain compensation for CTsDigital integrator for Rogowski coilsFlexible waveform buffer- Able to resample waveform to ensure 64 points per line cycle for ease of external harmonic analysis
- Events can trigger waveform storage
- Simplifies data collection for IEC 61000-4-7 harmonic analysis
Able to resample waveform to ensure 64 points per line cycle for ease of external harmonic analysisEvents can trigger waveform storageSimplifies data collection for IEC 61000-4-7 harmonic analysisAdvanced metrology feature set- Total active power, volt-amperes reactive (VAR), volt-amperes (VA), watthour, VAR-hour, and VA-hour
- Fundamental VAR and VAR-hour
- Current and voltage rms per phase (xIRMS, xVRMS)
- Supports active energy standards: IEC 62053-21, IEC 62053-22; EN50470-3; OIML R46, ANSI C12.20
- Supports reactive energy standards: IEC 62053-23, IEC 62053-4
- High speed communication port
- 10 MHz serial peripheral interface (SPI)
Total active power, volt-amperes reactive (VAR), volt-amperes (VA), watthour, VAR-hour, and VA-hourFundamental VAR and VAR-hourCurrent and voltage rms per phase (xIRMS, xVRMS)Supports active energy standards: IEC 62053-21, IEC 62053-22; EN50470-3; OIML R46, ANSI C12.20Supports reactive energy standards: IEC 62053-23, IEC 62053-4High speed communication port10 MHz serial peripheral interface (SPI) | Design Tools |
Data Sheets
Application Notes
User Guides
Order Information
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
|---|
| ADE9078ACPZ Production | 40 ld LFCSP (6x6mm w/4.6mm pad) | OTH 490 | -40 to 85C | 6.28 | 5.85 | Y |
| ADE9078ACPZ-RL Production | 40 ld LFCSP (6x6mm w/4.6mm pad) | REEL 2500 | -40 to 85C | 0 | 5.85 | Y |
Evaluation Boards
| Part Number | Description | Price | RoHS |
|---|
| EVAL-ADE9078EBZ | Evaluation Board | 390 | Y |
| EVAL-SDP-CB1Z | Controller Board | 99 | Y |
