ICS-41351

ICS-41351 Top Port PDM Digital Output Multi-Mode Microphone APPLICATIONS GENERAL DESCRIPTION Smartphones Microphone Arrays The ICS-41351 is a multi-mode, low noise digital MEMS Tablets microphone in a small package. The ICS-41351 consists of a Cameras MEMS microphone element and an impedance converter Bluetooth Headsets amplifier followed by a fourth-order - modulator. The digital Notebook PCs interface allows the pulse density modulated (PDM) output of Security and Surveillance two microphones to be time multiplexed on a single data line using a single clock. FEATURES The ICS-41351 has multiple modes of operation: Low Power SPEC STANDARD MODE LOW-POWER MODE (AlwaysOn), Standard and Sleep. The ICS-41351 has high SNR Sensitivity 26 dB FS 1 dB 26 dB FS 1 dB SNR 65 dBA 65 dBA and 120 dB SPL AOP in all operational modes. Current 600 A 230 A AOP 120 dB SPL 120 dB SPL The ICS-41351 is available in a standard 3.5 2.65 0.98 mm Clock 2.4 MHz 768 kHz surface-mount package. It is reflow solder compatible with no sensitivity degradation. 3.5 2.65 0.98 mm surface-mount package Extended frequency response from 50 Hz to >20 kHz Low power: 230 A in Low-Power Mode Sleep Mode: 12 A High power supply rejection (PSR): 93 dB FS Fourth-order - modulator Digital pulse density modulation (PDM) output Compatible with Sn/Pb and Pb-free solder processes RoHS/WEEE compliant FUNCTIONAL BLOCK DIAGRAM ORDERING INFORMATION PART TEMP RANGE PACKAGING ICS-41351 ICS-41351 40C to +85C 13 Tape and Reel CLK PDM ADC EV_ICS-41351-FX MODULATOR DATA POWER CHANNEL MANAGEMENT SELECT InvenSense Inc. InvenSense, Inc. reserves the right to change the detail Document Number: DS-000157 1745 Technology Drive, San Jose, CA 95110 U.S.A specifications as may be required to permit +1(408) 9887339 Revision: 1.1 improvements in the design of its products. Release Date: 01/25/2018 www.invensense.com VDD GND SELECT ICS-41351 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. Acoustical/Electrical Characteristics General .............................................................................................................. 4 Table 2. Acoustical/Electrical Characteristics Standard Mode.................................................................................................. 4 Table 4. Acoustical/Electrical Characteristics Low-Power Mode .............................................................................................. 4 Table 5. Digital Input/Output Characteristics .............................................................................................................................. 5 Table 6. PDM Digital Input/Output .............................................................................................................................................. 5 Timing Diagram ............................................................................................................................................................................ 6 Absolute Maximum Ratings .................................................................................................................................................................... 7 Table 7. Absolute Maximum Ratings ........................................................................................................................................... 7 ESD Caution ................................................................................................................................................................................. 7 Soldering Profile........................................................................................................................................................................... 8 Table 8. Recommended Soldering Profile* .................................................................................................................................. 8 Pin Configurations And Function Descriptions ....................................................................................................................................... 9 Table 9. Pin Function Descriptions ............................................................................................................................................... 9 Typical Performance Characteristics ..................................................................................................................................................... 10 Theory Of Operation ............................................................................................................................................................................. 11 PDM Data Format ...................................................................................................................................................................... 11 Table 10. ICS-41351 Channel Setting ......................................................................................................................................... 11 PDM Microphone Sensitivity ..................................................................................................................................................... 12 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 ...................................................................................................................................................... 18 Handling Instructions ............................................................................................................................................................................ 19 Pick And Place Equipment ......................................................................................................................................................... 19 Reflow Solder ............................................................................................................................................................................. 19 Board Wash................................................................................................................................................................................ 19 Page 2 of 23 Document Number: DS-000157 Revision: 1.1