TDK T3903, Руководство пользователя

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T3903
Page 2 of 21
Document Number: DS-000358
Revision: 1.0
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. Acoustical/Electrical Characteristics – General .............................................................................................................. 4
Table 2. Acoustical/Electrical Characteristics – High Quality Mode ............................................................................................ 4
Table 3. Acoustical/Electrical Characteristics – Low-Power Mode .............................................................................................. 5
Table 4. Digital Input/Output Characteristics .............................................................................................................................. 5
Table 5. PDM Digital Input/Output .............................................................................................................................................. 6
Timing Diagram ............................................................................................................................................................................ 6
Absolute Maximum Ratings .................................................................................................................................................................... 7
Table 6. Absolute Maximum Ratings ........................................................................................................................................... 7
ESD Caution ................................................................................................................................................................................. 7
Soldering Profile ........................................................................................................................................................................... 8
Table 7. Recommended Soldering Profile* .................................................................................................................................. 8
Pin Configurations And Function Descriptions ....................................................................................................................................... 9
Table 8. Pin Function Descriptions ............................................................................................................................................... 9
Typical Performance Characteristics ..................................................................................................................................................... 10
Theory Of Operation ............................................................................................................................................................................. 11
PDM Data Format ...................................................................................................................................................................... 11
Table 9. T3903 Channel Setting ................................................................................................................................................. 11
PDM Microphone Sensitivity ..................................................................................................................................................... 11
Applications Information ...................................................................................................................................................................... 13
Low-Power Mode....................................................................................................................................................................... 13
Dynamic Range Considerations ................................................................................................................................................. 13
Connecting PDM Microphones .................................................................................................................................................. 13
Sleep Mode ................................................................................................................................................................................ 15
Start-Up Time ............................................................................................................................................................................. 15
Supporting Documents ......................................................................................................................................................................... 16
Application Notes – General ...................................................................................................................................................... 16
PCB Design And Land Pattern Layout ................................................................................................................................................... 17
PCB Material And Thickness ...................................................................................................................................................... 17
Handling Instructions ............................................................................................................................................................................ 18
Pick And Place Equipment ......................................................................................................................................................... 18
Reflow Solder ............................................................................................................................................................................. 18