ADE7752AARZ

ADE7752AARZ is Analog Devices’ ADE7752 energy‑metering IC in the AARZ package. It’s a high‑accuracy, low‑power, single‑phase energy measurement ASIC that integrates two 24‑bit sigma‑delta ADCs, DSP, and energy calculation engines to derive real (active), reactive, and apparent energy, plus power and power factor, from voltage and current inputs.
How it works:
- Requires external voltage sensing and current sensing (shunt or CT with burden resistor).
- Processes the signals on-chip to produce energy and power values.
- Interfaces to a microcontroller via an SPI‑compatible serial bus for reading registers and configuring operation.
Key points:
- Suitable for single‑phase energy meters and energy monitoring.
- Provides digital outputs (registers) for active/reactive/apparent energy, power, and related quantities; supports calibration.
- 50/60 Hz operation; optimized for compact, low‑cost metering applications.
- AARZ is the package/variant code (rohs/compliant packaging) used for this device.
In short: a complete metering IC that converts analog V and I to digital energy/power data for microcontroller-based meters.

Key features of ADE7752AARZ (single‑phase energy metering IC):
- Fully integrated single‑phase multifunction metering IC with on‑chip ADC, DSP, and digital filters
- True RMS measurement of voltage and current
- Real‑time calculation of active (P), reactive (Q), and apparent (S) power
- Active and reactive energy counters (kWh, kvarh) with 4‑quadrant/bidirectional operation
- Pulse outputs for energy/power events (e.g., external counters)
- SPI-compatible serial interface for control and register read/write
- Programmable gain, phase calibration, and on‑chip temperature compensation
- Automatic line-frequency detection (50/60 Hz) with synchronization
- On‑chip voltage reference and low drift performance
- Compact packaging (AARZ) and suitable for low‑power, small‑form metering designs
Note: Analog front‑end uses external resistor networks to scale mains voltage/current to the ADC inputs.

ADE7752AARZ comes in a 28-pin RoHS-compliant LQFP (Low-Profile Quad Flat Package).

- Pin count: 28 pins.
- Function: ADE7752AARZ is a single‑phase, fully integrated energy‑metering IC that digitizes voltage and current, computes active/reactive/apparent energy and power, and provides a digital interface (SPI) to read energy data and status for use in energy meters.

- Manufacturer: Analog Devices, Inc. (ADI).
- What kind of company: A global American multinational semiconductor company that designs and manufactures analog, mixed-signal, and digital signal processing integrated circuits (ICs), sensors, and related products.

Used in digital energy metering and power monitoring systems. Typical applications include: single‑/polyphase electricity meters (kWh, kVARh, kVAh, PF), smart meters and sub-metering, building energy management and power quality monitoring, load monitoring in appliances and industrial equipment, and renewable energy inverters/grid-connected monitoring.

Common equivalents to ADE7752AARZ (energy‑meter ICs) include:
- Analog Devices: ADE7753, ADE7754, ADE7953
- Atmel/Microchip: ATM90E32, ATM90E31
- STMicroelectronics: STPM1, STPM10, STPM20
- Cirrus Logic: CS5460A, CS5461, CS5463
- Microchip: MCP3901, MCP3903 (MCP39xx family)
Note: these are functionally similar but not direct pin/register‑map drop‑ins; check interface, voltage, and register compatibility.