ICS-43432 2 Low-Noise Microphone with I S Digital Output APPLICATIONS GENERAL DESCRIPTION 2 Wearables The ICS-43432* is a digital I S output bottom port microphone. Smart Televisions The complete ICS-43432 solution consists of a MEMS sensor, Remote Controls signal conditioning, an analog-to-digital converter, decimation Teleconferencing Systems and anti-aliasing filters, power management, and an industry Gaming Consoles standard 24-bit IS interface. The IS interface allows the Security Systems ICS-43432 to connect directly to digital processors, such as DSPs Microphone Arrays and microcontrollers, without the need for an audio codec in the system. The ICS-43432 has a high SNR of 65 dBA and a wideband FEATURES frequency response. The sensitivity tolerance of the ICS-43432 Digital IS Interface with High Precision 24-bit Data is 1 dB, which enables high-performance microphone arrays High 65 dBA SNR without the need for system calibration. 26 dB FS Sensitivity 1 dB Sensitivity Tolerance The ICS-43432 is available in a small 4 mm 3 mm 1 mm Wide Frequency Response from 50 Hz to 20 kHz surface-mount package. Low Current Consumption: 1.0 mA High Power Supply Rejection: 80 dB FS *Protected by U.S. Patents 7,449,356 7,825,484 7,885,423 and 7,961,897. 116 dB SPL Acoustic Overload Point Other patents are pending. Small 4 mm 3 mm 1 mm Surface-Mount Package Compatible with Sn/Pb and Pb-Free Solder Processes RoHS/WEEE Compliant FUNCTIONAL BLOCK DIAGRAM ORDERING INFORMATION PART TEMP RANGE PACKAGING ICS-43432 ICS-43432 40C to +85C 13 Tape & Reel FILTER ADC SCK EV ICS-43432-FX 2 I S SD SERIAL PORT WS POWER HARDWARE MANAGEMENT CONTROL InvenSense Inc. This document contains information on a preproduction 1745 Technology Drive, San Jose, CA 94089 U.S.A Document Number: DS-000038 product. Specifications and information herein are subject Revision: 1.0 +1(408) 9887339 to change without notice. www.invensense.com Release Date: 12/10/2014 VDD GND CONFIG LR ICS-43432 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. IS Digital INPUT/Output ................................................................................................................................................ 5 Table 3. Serial Data Port Timing Specification ............................................................................................................................. 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 Power Management .................................................................................................................................................................. 10 Startup and Normal Operation ....................................................................................................................................... 10 Table 7. Startup time ...................................................................................................................................................... 10 Standby Mode ................................................................................................................................................................ 10 Soft Unmute ................................................................................................................................................................... 10 Synchronizing Microphones ...................................................................................................................................................... 10 IS Data Interface ....................................................................................................................................................................... 10 Data Output Mode ......................................................................................................................................................... 10 Data Word Length .......................................................................................................................................................... 11 Data Word Format .......................................................................................................................................................... 11 Data Output Format ....................................................................................................................................................... 12 Digital Microphone Sensitivity ................................................................................................................................................... 12 Digital Filter Characteristics ....................................................................................................................................................... 12 High-Pass Filter ............................................................................................................................................................... 12 Low-Pass Decimation Filter ............................................................................................................................................ 13 Applications Information ...................................................................................................................................................................... 14 SD Output Drive Strength .......................................................................................................................................................... 14 Page 2 of 20 Document Number: DS-000038 Revision: 1.0