INMP621

TABLE OF CONTENTS

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

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

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

Features ..........................................................................................................................................................................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. INMP621 Channel Setting ...............................................................................................................................10

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

Dynamic Range Considerations ....................................................................................................................................12

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

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Document Number: DS-INMP621-00

Revision: 1.0

Rev Date: 02/06/2014