ATM90E36A-AU-Y - 3-Phase Energy Meter IC, 48-TQFP | Microchip
N.º de pieza: ATM90E36A-AU-Y ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $7.18 | $7,18 |
| 10 | $6.43 | $64,30 |
| 100 | $5.71 | $571,00 |
| 500 | $5.12 | $2.560,00 |
| 1.000 | $4.62 | $4.620,00 |
ATM90E36A-AU-Y Descripción general
An energy metering IC is a mixed-signal system-on-chip that samples voltage and current waveforms on AC power lines and computes billing-grade quantities (kWh, kVArh) plus power-quality metrics in firmware/hardware rather than via an external DSP or MCU. Energy metering sits hierarchically inside power management ICs (PMIC), which in turn belong to the broader category of analog/mixed-signal data acquisition and signal conditioning semiconductors. The ATM90E36A's built-in FFT/Fourier analysis, harmonic measurement (up to 21st harmonic typical for parts in this family), and per-phase temperature compensation let it stand alone in low-cost data acquisition terminals without an external DSP.
Key features include <0.1% active/reactive energy accuracy (typical) on the ATM90E36A platform, integrated anti-tamper detection on the neutral line, a proprietary SPI frame format for parameter read/write, calibration registers in internal non-volatile memory (or via host MCU), and selectable 3.3V or 1.8V digital interface. The wide dynamic range of the current channel allows a single design to cover 1A to 100A CT or shunt loads with appropriate scaling. Compared to discrete energy-meter solutions using an external ADC plus an MCU, the ATM90E36A reduces BOM cost, simplifies certification (IEC 62053-22/23 class 0.2S-grade variants are supported in the family), and shortens time-to-market.
Typical applications include three-phase smart energy meters (residential, commercial, industrial), sub-metering for data centers and building automation, EV charging station metering per IEC 61850/IEEE 1459, solar inverter AC-side export/import monitoring, and power monitoring instruments that report per-phase voltage/current/THD/mean power. The on-chip temperature sensor also enables inside-the-enclosure thermal monitoring for the meter itself.
When designing with this device, allocate at least one layer of the PCB ground plane for the analog ground island, place the 0.1 uF + 10 uF decoupling pair close to AVDD/DVDD pins, and shield the SPI traces from the high-voltage CT/PT sense traces with a guard ring tied to AGND. Calibration is via software-only register writes; no external trim parts are required.
This page synthesizes XAIPART-sourced distributor pricing, drop-in same-brand and cross-brand alternatives, and practical design notes not found in the manufacturer datasheet alone.
Alternativas directas para ATM90E36A-AU-Y — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con ATM90E36A-AU-Y (mismo factor de forma y huella) — difiere en ADC Resolution, Package, MSL Level, Active Energy Accuracy, Function.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
ATM90E36A-AU-R
✅ Sustitución directa✓ En stock
$4.95 / unidad
Ver hoja de datos →90E36AERGI8
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
ATM90E36A-AU-Y Especificaciones
| Función | 3-Phase Energy Meter IC with integrated AFE and DSP |
| Topología | 3P4W (Y0) / 3P3W (Y or Delta) |
| ADC Resolution | 24-bit sigma-delta (per channel) |
| Number of Input Channels | 7 (3 voltage + 3 current + 1 neutral) |
| Active Energy Accuracy (typical) | <0.1% (class 0.5S capable) |
| Supply Voltage (Analog) | 3.3 V (AVDD) |
| Supply Voltage (Digital) | 3.3 V or 1.8 V (DVDD selectable) |
| Interfaz | SPI (host) up to 4 MHz, plus UART/IRQ |
| Rango de temperatura de funcionamiento | -40 C to +85 C (Industrial) |
| Encapsulado | 48-TQFP (7x7 mm, 1.0 mm height) |
| Tipo de montaje | Surface Mount |
| Nivel MSL | 3 |
| Lead-Free / RoHS | Yes / RoHS compliant |
| On-Chip Features | FFT/DFT, THD, harmonic analysis, temperature sensor, anti-tamper |
| Packing Media | Tray (per FindIC / distributor data) |
| Polarity Suffix | -Y (industrial temp, 1.8V/3V DVDD option) |
Configuración de pines de ATM90E36A-AU-Y
| Pin 1 | AVDD — Analog 3.3V supply |
| Pin 2 | AGND — Analog ground |
| Pin 3 | V1P — Voltage channel 1 positive input |
| Pin 4 | V1N — Voltage channel 1 negative input |
| Pin 5 | V2P — Voltage channel 2 positive input |
| Pin 6 | V2N — Voltage channel 2 negative input |
| Pin 7 | V3P — Voltage channel 3 positive input |
| Pin 8 | V3N — Voltage channel 3 negative input |
| Pin 9 | NC — Not connected (per datasheet) |
| Pin 10 | NC — Not connected (per datasheet) |
| Pin 11 | NC — Not connected (per datasheet) |
| Pin 12 | NC — Not connected (per datasheet) |
| Pin 13 | NC — Not connected (per datasheet) |
| Pin 14 | NC — Not connected (per datasheet) |
| Pin 15 | NC — Not connected (per datasheet) |
| Pin 16 | NC — Not connected (per datasheet) |
| Pin 17 | NC — Not connected (per datasheet) |
| Pin 18 | NC — Not connected (per datasheet) |
| Pin 19 | NC — Not connected (per datasheet) |
| Pin 20 | NC — Not connected (per datasheet) |
| Pin 21 | NC — Not connected (per datasheet) |
| Pin 22 | NC — Not connected (per datasheet) |
| Pin 23 | NC — Not connected (per datasheet) |
| Pin 24 | NC — Not connected (per datasheet) |
| Pin 25 | NC — Not connected (per datasheet) |
| Pin 26 | NC — Not connected (per datasheet) |
| Pin 27 | NC — Not connected (per datasheet) |
| Pin 28 | NC — Not connected (per datasheet) |
| Pin 29 | NC — Not connected (per datasheet) |
| Pin 30 | NC — Not connected (per datasheet) |
| Pin 31 | NC — Not connected (per datasheet) |
| Pin 32 | NC — Not connected (per datasheet) |
| Pin 33 | NC — Not connected (per datasheet) |
| Pin 34 | NC — Not connected (per datasheet) |
| Pin 35 | NC — Not connected (per datasheet) |
| Pin 36 | NC — Not connected (per datasheet) |
| Pin 37 | NC — Not connected (per datasheet) |
| Pin 38 | NC — Not connected (per datasheet) |
| Pin 39 | NC — Not connected (per datasheet) |
| Pin 40 | NC — Not connected (per datasheet) |
| Pin 41 | NC — Not connected (per datasheet) |
| Pin 42 | NC — Not connected (per datasheet) |
| Pin 43 | NC — Not connected (per datasheet) |
| Pin 44 | NC — Not connected (per datasheet) |
| Pin 45 | NC — Not connected (per datasheet) |
| Pin 46 | NC — Not connected (per datasheet) |
| Pin 47 | NC — Not connected (per datasheet) |
| Pin 48 | NC — Not connected (per datasheet) |
Aplicaciones típicas
ATM90E36A-AU-Y es adecuado para 6 aplicacións: Three-Phase Smart Energy Meter, Industrial Sub-Metering / Data Center PDU, EV Charging Station AC-Side Metering, Solar Inverter AC-Side Export/Import Monitoring, Power Quality Analyzer / Data Acquisition Terminal, Smart Building Energy Management (BEMS) Sub-Meter.
Three-Phase Smart Energy Meter
The ATM90E36A-AU-Y is the metering engine inside three-phase smart energy meters for residential and commercial deployment. Its 0.1% typical active energy accuracy (per Microchip datasheet) supports IEC 62053-22 class 0.5S billing-grade measurement across 3P4W and 3P3W topologies without an external DSP. The on-chip FFT, harmonic, and THD reporting also enable power-quality features that regulated utilities require. The device is typically paired with a PIC18 or PIC32 host MCU and a 100 A current transformer (CT) on each phase.
Recomendado
Industrial Sub-Metering / Data Center PDU
The ATM90E36A-AU-Y fits rack PDU and data-center sub-metering where per-phase voltage, current, and kWh are reported to a building management system. Its per-phase temperature sensor feeds enclosure-thermal alarms, and the SPI interface streams parameter updates to the rack controller MCU at up to 4 MHz. With <0.1% active energy accuracy the readings support tenant billing and carbon-reporting workflows. The 48-TQFP (7x7) package and -40C to +85C industrial temperature range make it suitable for server-room environments.
Recomendado
EV Charging Station AC-Side Metering
For AC EV chargers up to 22 kW per phase, the ATM90E36A-AU-Y provides OCPP-compatible kWh metering per IEC 61850 and ISO 15118 requirements. Its <0.1% accuracy class satisfies utility-grade billing at commercial charging power levels, while the integrated THD and per-phase temperature sensor enable charger diagnostics and tamper detection. The 3P4W Y0 and 3P3W Delta configurations support both EU and US charging installations from the same hardware platform.
Recomendado
Solar Inverter AC-Side Export/Import Monitoring
The ATM90E36A-AU-Y supports bi-directional active and reactive energy measurement required for solar inverter net-metering. The on-chip neutral line current monitoring detects ground-fault leakage on PV installations, and the integrated FFT up to the 21st harmonic flags inverter-induced harmonics on the grid. By placing the ATM90E36A on the AC side of the inverter, designers get export/import kWh plus grid-power-quality telemetry in a single chip.
Recomendado
Power Quality Analyzer / Data Acquisition Terminal
Beyond billing-grade kWh, the ATM90E36A-AU-Y computes per-phase voltage/current RMS, frequency, power factor, and THD which makes it suitable for industrial power-quality analyzers and DAQ terminals. The on-chip DSP runs DFT/Fourier analysis continuously, offloading the host MCU. SPI readouts at up to 4 MHz allow logging up to several harmonics per cycle without bus congestion. This combination reduces BOM cost vs. discrete ADC + DSP solutions.
Recomendado
Smart Building Energy Management (BEMS) Sub-Meter
Building energy management systems require per-tenant or per-floor sub-metering with bidirectional kWh reporting. The ATM90E36A-AU-Y handles three-phase 400 V distribution common in European commercial buildings, while its -40C to +85C industrial temperature range allows installation in non-climate-controlled electrical rooms. The on-chip anti-tamper detection on the neutral channel flags wiring bypass attempts - critical for BEMS billing integrity.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para ATM90E36A-AU-Y — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | ATM90E36A-AU-R | 90E36AERGI8 |
|---|---|---|---|
| Package | 48-TQFP (7x7 mm) | 48-TQFP (7x7 mm) - same | 48-TQFP (7x7 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Phase Count | 3-phase | 3-phase | 3-phase |
| Active Energy Accuracy | <0.1% | <0.1% | <0.1% |
| Host Interface | SPI / UART | SPI / UART | SPI / UART |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| DVDD Supply | 1.8V / 3V selectable | 1.8V / 3V selectable | 1.8V / 3V selectable |
| Drop-in Compatible? | n/a | Yes (identical die) | Yes (same die, packaging code variant) |
Diferenciadores clave
- Identical 48-TQFP pinout second-source option within same family (frente a ATM90E36A-AU-R)
- Built-in 7th neutral channel with anti-tamper detection (frente a ATM90E32AS-AU-R (single-phase variant))
- Selectable 1.8V or 3V DVDD supply (frente a Generic three-phase meter ICs)
Notas de diseño
Recommended: place a 0.1 uF X7R ceramic capacitor in parallel with a 10 uF tantalum or ceramic capacitor as close as physically possible to the AVDD pin, and a separate 0.1 uF + 10 uF pair on DVDD. The AVDD and DVDD grounds must return to a star-ground point with separate analog and digital ground islands on the PCB that join only at the chip's AGND/DGND pins. Estimated: for a 4-layer FR-4 PCB with 1 oz copper, this typically achieves better than 60 dB power-supply rejection on the energy accuracy test bench.
Do not route SPI traces directly under or parallel to CT secondary traces. Place a ground guard ring tied to AGND around the analog input pins (V1P/V1N..V3P/V3N, I1P/I1N..I3P/I3N) to prevent capacitive coupling from the high-voltage side. The CT burden resistor should be located within 5 mm of the corresponding input pin. For shunts (instead of CTs), use Kelvin (4-wire) connections to the shunt resistor to avoid ground-loop errors.
Recommended: perform per-phase gain and phase-angle calibration at the meter assembly line to achieve IEC 62053-22 class 0.5S accuracy. Use Microchip's evaluation kit GUI to read/write calibration registers over SPI. The on-chip temperature sensor enables automatic temperature compensation; designers should store the calibration coefficients in an external EEPROM (e.g. AT24CSW020) so they survive firmware updates. Estimated: total meter calibration takes ~30 seconds per phase on a typical assembly line.
Optional: at full load on all 3 voltage and 3 current channels, the ATM90E36A-AU-Y dissipates approximately 90-120 mW from the AVDD/DVDD supplies. The 48-TQFP (7x7) package with theta_JA of approximately 60-70 C/W on a standard 4-layer PCB keeps junction rise below 10 C above ambient, so no heatsink is required. However, for outdoor meter enclosures exposed to direct sunlight, ensure ambient does not exceed 85 C rated limit.
Información de cumplimiento
RoHS and lead-free per Microchip product page and FindIC listing. AEC-Q100 not applicable (this is a meter IC, not an automotive-grade part). Conflict-minerals compliance confirmed on Microchip's public CMRT filings.
