INMP521

TABLE OF CONTENTS

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

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

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

Functional Block Diagram ........................................................................................................................................1

Ordering Information...............................................................................................................................................1

Table of Contents..................................................................................................................................................... 2

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

Table 1. Electrical Characteristics ............................................................................................................................4

Table 2. Timing Characteristics................................................................................................................................5

Timing Diagram........................................................................................................................................................5

Absolute Maximum Ratings............................................................................................................................................ 6

Table 3. Absolute Maximum Ratings .......................................................................................................................6

ESD Caution .............................................................................................................................................................6

Soldering Profile.......................................................................................................................................................7

Table 4. Recommended Soldering Profile*..............................................................................................................7

Pin Configurations And Function Descriptions ............................................................................................................... 8

Table 5. Pin Function Descriptions...........................................................................................................................8

Typical Performance Characteristics............................................................................................................................... 9

Theory Of Operation..................................................................................................................................................... 10

PDM Data Format ..................................................................................................................................................10

Table 6. INMP521 Channel Setting ........................................................................................................................10

PDM Microphone Sensitivity .................................................................................................................................11

Connecting PDM Microphones..............................................................................................................................12

Sleep Mode............................................................................................................................................................14

Start-Up Time.........................................................................................................................................................14

Supporting Documents ................................................................................................................................................. 15

Evaluation Board User Guide.................................................................................................................................15

application Note (Product Specific) .......................................................................................................................15

Application Notes (General) ..................................................................................................................................15

PCB Design And Land Pattern Layout ........................................................................................................................... 16

Alternative PCB Land Patterns...............................................................................................................................17

PCB Material And Thickness ..................................................................................................................................17

Handling Instructions.................................................................................................................................................... 18

Pick And Place Equipment .....................................................................................................................................18

Reflow Solder.........................................................................................................................................................18

Board Wash............................................................................................................................................................18

Outline Dimensions....................................................................................................................................................... 19

Page 2 of 20

Document Number: DS-INMP521-00

Revision: 1.0.