ADEMA124ACPZ datasheet(2/78 Pages) AD

2 / 78 page

Data Sheet

ADEMA124/ADEMA127

TABLE OF CONTENTS

analog.com

Rev. A | 2 of 78

Features................................................................ 1

Applications........................................................... 1

General Description...............................................1

Functional Block Diagrams....................................3

Specifications........................................................ 4

Bandwidth and Pass-Band Flatness.................. 7

Timing Characteristics........................................8

Absolute Maximum Ratings...................................9

Thermal Resistance........................................... 9

ESD Caution.......................................................9

Pin Configurations and Function Descriptions.....10

Typical Performance Characteristics................... 12

Test Circuit...........................................................18

Terminology......................................................... 19

Theory of Operation.............................................20

Gain and Offset Correction...............................20

Quick Start Guide............................................. 20

Applications Information...................................... 21

Start-Up Sequence and Timing........................ 21

Modes of Operation..........................................22

SPI Compatible Communication...................... 25

Datapath Configuration.................................... 33

Configuration Procedure.................................. 39

Status Registers and IRQ.................................40

CRC Protection................................................ 41

Sensor to ADC Interface.................................. 43

Crystal Oscillator/External Clock...................... 44

Synchronization of Multiple Devices.................45

Power Consumption.........................................46

Polyphase Energy Meters................................ 47

Split Phase Energy Meters...............................49

Hardware Identifiers............................................ 50

SPI Accessible Addresses...................................51

DSP RAM Summary............................................70

DSP RAM Details................................................ 73

Outline Dimensions............................................. 78

Ordering Guide.................................................78

Evaluation Boards............................................ 78

REVISION HISTORY

11/2025—Rev. 0 to Rev. A

Changes to General Description Section.........................................................................................................1

Changes to ADC Gain Drift over Temperature Parameter; ADC Transfer Function Parameter; and

Signal-to-Noise Ratio (SNR), 2x Gain Parameter, Table 2............................................................................ 4

Changes to Table 3..........................................................................................................................................7

Changes to Figure 14 Caption and Figure 15 Caption.................................................................................. 13

Changes to Figure 27 Caption....................................................................................................................... 15

Added Figure 28 and Figure 29; Renumbered Sequentially..........................................................................15

Changes to Figure 31 Caption and Figure 36 Caption.................................................................................. 16

Change to Figure 37 Caption.........................................................................................................................17

Change to Figure 38...................................................................................................................................... 18

Changes to Software Reset Section.............................................................................................................. 24

Changes to Hardware Reset Section.............................................................................................................24

Changes to ADC Transfer Function Section..................................................................................................35

Changes to Digital Low-Pass Filter (LPF) Section.........................................................................................38

Changes to Sinc Compensation Filter Section.............................................................................................. 38

Changes to Digital High-Pass Filter (HPF) Section....................................................................................... 38

Changes to Digital Integrator and All Pass Filter Section.............................................................................. 39

Changes to Anti-Aliasing Filters Section and Figure 63.................................................................................43

Changes to Figure 66.................................................................................................................................... 44

Change to Table 28........................................................................................................................................52

Changes to Table 30......................................................................................................................................58

7/2025—Revision 0: Initial Version

ADEMA124ACPZ Datasheet(PDF) 2 Page - Analog Devices

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