Data Sheet

ADE9322B

Rev. Sp0

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FEATURES

mSure sensor monitoring

Noninvasive, real-time direct, precision measurement of

the input signal path

Identifies sensor malfunction

Companion microcontroller unit firmware to facilitate

diagnostic data reporting

Supported for current shunts and potential divider

mSure self calibration

Automatic calibration based on a direct measurement of

the full signal path

Allows calibration up to 0.25% error for each channel

2 high performance Σ-Δ ADCs

Pseudo differential input voltage range: ±41.67 mV peak,

+29.46 mV rms input on the current channel

Bit stream output

Industrial temperature range: −40°C to +85°C

Integrated temperature sensor with a 12-bit successive

approximation register (SAR) ADC

APPLICATIONS

Shunt-based polyphase energy meters

Solar inverters

Process monitoring

Smart power distribution units

Polyphase ac chargers

GENERAL DESCRIPTION

digital converters (ADCs) with mSure® that converts two analog

input signals into a single bit stream output. The device is enabled

with an mSure sensor monitoring feature that allows the user to

check the overall accuracy of the sensor and signal path to identify

accuracy drifts that occur over time on the current and voltage

channels, independently. The mSure sensor monitoring feature

enables antitampering and meter health capabilities when

incorporated into a larger system, including digital isolation, a

digital metrology engine (ADE7979), and cloud analytics service.

Self calibration with mSure enables the device to automatically

calibrate the current and voltage channels to achieve a 1% energy

accuracy.

The ADE9322B incorporates high performance ADCs. The

current channel is designed to interface with a shunt resistor.

The voltage channel requires an input from a potential divider.

A high speed serial peripheral interface (SPI) port and a universal

asynchronous receiver and transmitter (UART) port allows

access to the ADE9322B registers.

Note that throughout this data sheet, multifunction pins, such

as MISO/TX, are referred to either by the entire pin name or by

a single function of the pin, for example, MISO, when only that

function is relevant.

The ADE9322B operates from a 3.3 V supply and is available in

a 32-lead LFCSP.

FUNCTIONAL BLOCK DIAGRAM

ADE9322B

CLKIN

AGND/DGND

PHASE

NEUTRAL

AGND/DGND

AGND/DGND

VMS

VN

VP

IN

IP

IMS

CLKOUT

SYNCIN

DATAOUT

RESET

ADDR1

ADDR0

SS

SCLK

MISO/TX

MOSI/RX

LOAD

mSure VOLTAGE DRIVER

mSure ENGINE

mSure REMOVAL

mSure DETECTOR

ADC

ADC

mSure CURRENT DRIVER

TEMPERATURE

SENSOR

SAR

CLOCK

GENERATION

BIT STREAM

INTERFACE

SPI/UART

INTERFACE

V

I

NOTES

Figure 1.

For more information about the ADE9322B, contact your local Analog Devices, Inc., Sales Team, email energy.support@analog.com or

visit www.analog.com/mSure.

1

Protected by U.S. Patents 8,350,558; 8,010,304; WO2013038176 A3; 0113507 A1; 0253102 A1; 0354266 A1; and 0154029 A1. Other patents pending.