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 21
Document Number: DS-INMP521-00
Revision: 1.1
