ADMP621

Data Sheet

TABLE OF CONTENTS

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

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

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

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

Revision History ............................................................................... 2

Specifications..................................................................................... 3

Timing Characteristics ................................................................ 4

Absolute Maximum Ratings............................................................ 5

ESD Caution.................................................................................. 5

Pin Configuration and Function Descriptions............................. 6

Typical Performance Characteristics ............................................. 7

Theory of Operation ........................................................................ 8

PDM Data Format........................................................................ 8

PDM Microphone Sensitivity ..................................................... 8

Dynamic Range Considerations................................................. 9

Connecting PDM Microphones..................................................9

Sleep Mode.................................................................................. 10

Start-Up Time............................................................................. 10

Applications Information .............................................................. 11

Interfacing with Analog Devices Codecs................................ 11

Supporting Documents ............................................................. 11

PCB Design and Layout................................................................. 12

Alternative PCB Land Patterns................................................. 13

PCB Material and Thickness .................................................... 13

Handling Instructions.................................................................... 14

Pick-and-Place Equipment ....................................................... 14

Reflow Solder.............................................................................. 14

Board Wash ................................................................................. 14

Outline Dimensions....................................................................... 15

Ordering Guide .......................................................................... 15

REVISION HISTORY

7/13—Revision 0: Initial Revision

Rev. 0 | Page 2 of 16