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ADE7953ACPZ-RL

Single-phase energy metering IC, <0.1% error, SPI, shunt/CT, LFCSP-28

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Manufacturer Part：

ADE7953ACPZ-RL

Package：

LFCSP-28 (5×5 mm)

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Description

Product Overview

The Analog Devices ADE7953ACPZ-RL is a single-phase high-accuracy energy metering IC with integrated serial peripheral interface (SPI) and active, reactive, and apparent energy measurement capabilities. It provides accurate energy measurement over a dynamic range of 1000:1 with less than 0.1% error. The device supports both shunt and current transformer sensing and features zero-crossing detection, voltage sag detection, and active power crest factor measurement.

Key Specifications

Function Single-phase energy metering IC
Measurement Types Active, reactive, apparent energy; RMS voltage/current
Accuracy <0.1% error over 1000:1 dynamic range
Current Sensor Shunt or current transformer (CT)
Interface SPI (up to 10 MHz)
Supply Voltage 3.0 V ~ 3.6 V (3.3V typical)
ADC Resolution 24-bit Σ-Δ
Sample Rate 8 kHz
Zero-Crossing Detection Yes
Package LFCSP-28 (5×5 mm)
Operating Temperature -40°C ~ +85°C
Power Consumption Typical 10 mA

Features

  • High-accuracy energy measurement with less than 0.1% error over wide dynamic range
  • Supports both shunt resistor and current transformer current sensing
  • Active, reactive, and apparent energy measurement with individual register access
  • 24-bit Sigma-Delta ADCs for high-resolution measurement
  • Zero-crossing detection for power line synchronization
  • Voltage sag detection and power quality monitoring
  • Active power crest factor measurement
  • SPI interface for flexible MCU communication

Applications

  • Single-phase residential energy meters
  • Smart meters and advanced metering infrastructure (AMI)
  • Industrial power monitoring and sub-metering
  • Server and data center power monitoring
  • Appliance energy monitoring and management

The ADE7953ACPZ-RL from Analog Devices is a high-accuracy single-phase energy metering IC designed for residential and industrial metering applications. It provides active, reactive, and apparent energy measurement with less than 0.1% error over a 1000:1 dynamic range, meeting the accuracy requirements of IEC 62053 and equivalent standards. The device integrates two 24-bit Sigma-Delta ADCs for simultaneous voltage and current sampling at 8 kHz, along with digital signal processing for energy computation. It supports both shunt resistor and current transformer (CT) current sensing methods. The SPI interface provides register-based access to all measurement data, including instantaneous voltage, current, active power, reactive power, apparent power, and energy accumulation registers. Additional features include zero-crossing detection, voltage sag detection, and active power crest factor measurement.

The ADE7953 operates by continuously sampling the line voltage and load current through its two 24-bit Sigma-Delta ADCs. The voltage channel samples the scaled line voltage through a resistor divider network, while the current channel samples the voltage across a shunt resistor or the secondary output of a current transformer. The digitized samples are processed through a digital signal processing (DSP) engine that computes instantaneous active power (voltage × current), reactive power (using 90° phase-shifted voltage), and apparent power (RMS voltage × RMS current). Energy accumulation is performed by integrating the power values over time. The zero-crossing detection circuit monitors the voltage channel to identify line frequency cycles for period measurement and synchronized energy accumulation. The SPI interface allows an external MCU to read all computed values from internal registers and configure operating parameters such as gain, phase calibration, and interrupt masks.

Pin Name Type Function
1-2 VIP, VIN Analog Input Current channel differential inputs
3-4 VNP, VNN Analog Input Voltage channel differential inputs
5 REF Analog Voltage reference (internal 1.2V or external)
6-7 AVDD, AGND Power Analog supply and ground
8-9 DVDD, DGND Power Digital supply and ground
10 CLKIN Input External clock input (3.5795 MHz crystal)
11 CLKOUT Output Crystal oscillator output
12-15 SCLK, CS, DIN, DOUT SPI SPI interface for MCU communication
16 IRQ Output Interrupt request (active low)
17 CF1 Output Calibration frequency output (active energy)
18 CF2 Output Calibration frequency output (reactive/apparent)
19-28 ZX, SAG, etc. Digital I/O Zero-crossing, sag detect, reset, and misc control
  • Smart metering: Single-phase residential electricity meters with IEC 62053 compliance for utility billing
  • Sub-metering: Commercial building tenant energy monitoring and cost allocation systems
  • Data center PDU: Per-outlet power monitoring in intelligent power distribution units
  • Industrial equipment: Machine power consumption monitoring for predictive maintenance and energy optimization
  • Smart appliances: Embedded energy measurement in HVAC, EV chargers, and home energy management systems
Manufacturer Part Number Package Notes
ADI ADE7953ACPZ LFCSP-28 Tray packaging variant (same silicon)
ADI ADE7952ACPZ LFCSP-28 Similar, UART interface variant
ADI ADE7755ARSZ SOIC-20 Lower cost, active energy only, no SPI
Microchip MCP39F521 QFN-28 Single-phase, I2C/SPI, power monitoring
Renesas RL78/I1A LQFP-52 MCU with integrated metering peripherals
TI MSP430F6736 LQFP-64 Metering MCU with integrated 24-bit ADCs
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Quality Assurance

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Shipping & Payment

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Service & Packaging

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

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