T5818

T5818 Bottom Port PDM Digital Output Multi-Mode Microphone APPLICATIONS GENERAL DESCRIPTION Smartphones The T5818 is a multi-mode, low noise digital MEMS Microphone Arrays microphone in a small package. The T5818 consists of a Tablet Computers MEMS microphone element and an impedance converter Cameras amplifier followed by a fourth-order - modulator. The digital interface allows the pulse density modulated (PDM) output of FEATURES two microphones to be time multiplexed on a single data line SPEC HIGH QUALITY MODE LOW-POWER MODE using a single clock. Sensitivity 41 dB FS 1 dB 26 dB FS 1 dB SNR 66 dBA 63 dBA The T5818 has multiple modes of operation: High Quality, Current 590 A 220 A Low-Power (AlwaysOn), and Sleep. The T5818 has high SNR in AOP 135 dB SPL 120 dB SPL all operational modes. It has 135 dB SPL AOP in High Quality Clock 2.0 MHz to 3.3 MHz 400 kHz to 800 kHz Mode and 120 dB SPL AOP in Low-Power mode. 3.5 2.65 0.98 mm surface-mount package The T5818 is available in a standard 3.5 2.65 0.98 mm Extended frequency response from 40 Hz to >20 kHz surface-mount package. It is reflow solder compatible with Sleep Mode: 9 A no sensitivity degradation. 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 T5818 ICS-51360 MMICT5818-00-012 40C to +85C 13 Tape and Reel CLK PDM ADC MODULATOR DATA POWER CHANNEL MANAGEMENT SELECT TDK Corporation TDK, Inc. reserves the right to change the detail Document Number: DS-000270 1745 Technology Drive, San Jose, CA 95110 U.S.A specifications as may be required to permit +1(408) 9887339 Revision: 1.2 improvements in the design of its products. www.tdk.com Release Date: 3/30/2020 VDD GND SELECTT5818 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 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 ............................................................................................................................................................................. 12 PDM Data Format ...................................................................................................................................................................... 12 Table 9. T5818 Channel Setting ................................................................................................................................................. 12 PDM Microphone Sensitivity ..................................................................................................................................................... 12 Applications Information ...................................................................................................................................................................... 14 Low-Power Mode....................................................................................................................................................................... 14 Dynamic Range Considerations ................................................................................................................................................. 14 Connecting PDM Microphones .................................................................................................................................................. 14 Sleep Mode ................................................................................................................................................................................ 16 Start-Up Time ............................................................................................................................................................................. 16 Supporting Documents ......................................................................................................................................................................... 17 Application Notes General ...................................................................................................................................................... 17 PCB Design And Land Pattern Layout ................................................................................................................................................... 18 PCB Material And Thickness ...................................................................................................................................................... 18 Handling Instructions ............................................................................................................................................................................ 19 Pick And Place Equipment ......................................................................................................................................................... 19 Reflow Solder ............................................................................................................................................................................. 19 Page 2 of 22 Document Number: DS-000270 Revision: 1.2