AD5941 datasheet(3/143 Pages) AD

3 / 143 page

Data Sheet

AD5940/AD5941

TABLE OF CONTENTS

analog.com

Rev. D | 3 of 143

Sleep and Wake-Up Timer Overview............. 107

Configuring a Defined Sequence Order......... 107

Recommended Sleep and Wake-Up Timer

Operation......................................................107

Sleep and Wake-Up Timer Registers............. 108

Interrupts............................................................112

Interrupt Controller Interupts...........................112

Configuring the Interrupts............................... 112

Custom Interrupts........................................... 112

External Interrupt Configuration......................112

Interrupt Registers.......................................... 113

External Interrupt Configuration Registers..... 118

Digital Inputs/Outputs........................................ 122

Digital Inputs/Outputs Features......................122

Digital Inputs/Outputs Operation.................... 122

GPIO Registers.............................................. 123

System Resets.................................................. 127

Analog Die Reset Registers........................... 127

Power Modes.....................................................129

Active High Power Mode (>80 KHz)...............129

Active Low Power Mode (<80 KHz)............... 129

Hibernate Mode..............................................129

Shutdown Mode............................................. 129

Low Power Mode............................................129

Power Modes Registers................................. 129

Clocking Architecture.........................................132

Clock Features............................................... 132

Clock Architecture Registers.......................... 132

Applications Information.................................... 137

EDA Bioimpedance Measurement Using a

Low Bandwidth Loop.................................... 137

Body Impedance Analysis (BIA)

Measurement Using a High Bandwidth

Loop............................................................. 138

High Precision Potentiosat Configuration.......139

Using the AD5940/AD5941, AD8232, and

AD8233 for Bioimpedance and

Electrocardiogram (ECG) Measurements.... 140

Smart Water/Liquid Quality AFE.................... 141

Outline Dimensions........................................... 142

Ordering Guide...............................................143

Evaluation Boards.......................................... 143

Automotive Products...................................... 143

REVISION HISTORY

1/2024—Rev. C to Rev. D

Changed Master to Initiator and Slave to Target (Throughout)........................................................................1

Changes to Features Section.......................................................................................................................... 1

Change to Applications Section....................................................................................................................... 1

Changes to Figure 2........................................................................................................................................ 5

Deleted Figure 3; Renumbered Sequentially................................................................................................... 5

Changes to ADC RMS Noise Specifications Section.....................................................................................16

Change to Table 9..........................................................................................................................................25

Change to Low Power DAC Section.............................................................................................................. 30

Changes to Equation 6 and Equation 7......................................................................................................... 31

Changes to High Speed DAC Output Attenuation Options Section...............................................................45

Changes to Figure 29.................................................................................................................................... 50

Change to Table 38........................................................................................................................................52

Changes to ADC Circuit Features Section.....................................................................................................55

Changes to ADC Postprocessing Section..................................................................................................... 57

Changed Sinc2 Filter (50 Hz/60 Hz Mains Filter) Section to 50 Hz/60 Hz Mains Rejection Filter Section.... 57

Added 50 Hz/60 Hz Notch Filter Section....................................................................................................... 57

Change to Table 43........................................................................................................................................58

Changes to Table 45......................................................................................................................................60

Changes to Table 46......................................................................................................................................60

Changes to Table 51......................................................................................................................................62

Changes to AFEx Switches Section.............................................................................................................. 74

Changes to Figure 35.................................................................................................................................... 75

Change to Sinusoid Generator Section......................................................................................................... 99

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