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. I
2
S Digital Input/Output Characteristics ....................................................................................................... 5
Table 3. Serial Data Port Specifications ..................................................................................................................... 5
Timing Diagram .......................................................................................................................................................... 5
Absolute Maximum Ratings .............................................................................................................................................. 6
Table 4. Absolute Maximum Ratings ......................................................................................................................... 6
ESD Caution ............................................................................................................................................................... 6
Soldering Profile......................................................................................................................................................... 7
Table 5. Recommended Soldering Profile* ................................................................................................................ 7
Pin Configurations And Function Descriptions ................................................................................................................. 8
Table 6. Pin Function Descriptions ............................................................................................................................. 8
Typical Performance Characteristics ................................................................................................................................. 9
Theory of Operation ....................................................................................................................................................... 10
Understanding Sensitivity ........................................................................................................................................ 10
Power Management ................................................................................................................................................ 10
Normal Operation ................................................................................................................................................... 10
Standby Mode ......................................................................................................................................................... 10
Power-Down Mode ................................................................................................................................................. 10
Startup .................................................................................................................................................................... 10
I²S Data Interface ..................................................................................................................................................... 11
Data Output Mode .................................................................................................................................................. 11
Data Word Length ................................................................................................................................................... 11
Data-Word Format .................................................................................................................................................. 11
Digital Microphone Sensitivity ................................................................................................................................. 12
Synchronizing Microphones .................................................................................................................................... 13
Digital Filter Characteristics ..................................................................................................................................... 13
High-Pass Filter ........................................................................................................................................................ 13
Table 7. High Pass Filter Characteristics .................................................................................................................. 13
Low-Pass Filter ......................................................................................................................................................... 13
Applications Information ................................................................................................................................................ 15
Page 2 of 21
Document Number: DS-INMP441-00
Revision: 1.1
