Omnidirectional Microphone with Bottom Port and Analog Output Data Sheet ADMP404 FEATURES FUNCTIONAL BLOCK DIAGRAM Tiny 3.35 mm 2.50 mm 0.88 mm surface-mount package High SNR of 62 dBA High sensitivity of 38 dBV OUTPUT OUTPUT AMPLIFIER Flat frequency response from 100 Hz to 15 kHz Low current consumption: <250 A Single-ended analog output POWER High PSR of 70 dB ADMP404 Compatible with Sn/Pb and Pb-free solder processes V GND DD RoHS/WEEE compliant Figure 1. APPLICATIONS Smartphones and feature phones Teleconferencing systems Digital video cameras Bluetooth headsets Video phones Tablets GENERAL DESCRIPTION 1 The ADMP404 is a high quality, high performance, low power, The ADMP404 complies with the TIA-920 Telecommunications analog output bottom-ported omnidirectional MEMS microphone. Telephone Terminal Equipment Transmission Requirements for The ADMP404 consists of a MEMS microphone element, an Wideband Digital Wireline Telephones standard. impedance converter, and an output amplifier. The ADMP404 The ADMP404 is available in an ultraminiature 3.35 mm sensitivity specification makes it an excellent choice for both 2.50 mm 0.88 mm surface-mount package. It is reflow solder near field and far field applications. The ADMP404 has a high compatible with no sensitivity degradation. The ADMP404 is signal-to-noise ratio (SNR) and flat, wideband frequency response, halide free. resulting in natural sound with high intelligibility. Its low current consumption enables long battery life for portable applications. 1 Protected by U.S. Patents 7,449,356 7,825,484 7,885,423 7,961,897. Other patents are pending. Rev. C Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 www.analog.com license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. Fax: 781.461.3113 20102012 Analog Devices, Inc. All rights reserved. OBSOLETE 08616-001ADMP404 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Connecting to Analog Devices Audio Codecs ..........................7 Applications ....................................................................................... 1 Supporting Documents ................................................................7 Functional Block Diagram .............................................................. 1 PCB Land Pattern Layout .................................................................8 General Description ......................................................................... 1 Handling Instructions .......................................................................9 Revision History ............................................................................... 2 Pick and Place Equipment............................................................9 Specifications ..................................................................................... 3 Reflow Solder .................................................................................9 Absolute Maximum Ratings ............................................................ 4 Board Wash ....................................................................................9 ESD Caution .................................................................................. 4 Reliability Specifications ................................................................ 10 Pin Configuration and Function Descriptions ............................. 5 Outline Dimensions ....................................................................... 11 Typical Performance Characteristics ............................................. 6 Ordering Guide .......................................................................... 11 Applications Information ................................................................ 7 REVISION HISTORY 7/12Rev. B to Rev. C 8/11Rev. A to Rev. B Changes to Features Section, General Description Section, Changes to Figure 1 ........................................................................... 1 Figure 1, and Page 1 Layout............................................................. 1 Changes to Supply Voltage Parameter, Table 1 .............................. 3 Add Note 1 ......................................................................................... 1 Changes to Table 3 ............................................................................. 4 Changes to Powers Supply Rejection Parameter, Table 1 ............ 3 Added Connecting to Analog Devices, Inc., Audio Codecs Changes to Temperature Range Parameter, Table 2 ..................... 4 Section and Supporting Documents Section ................................. 7 Changes to Figure 5 .......................................................................... 6 Changes to Pick and Place Equipment Changes to Connecting to Analog Devices Audio Codecs Section (20 kg to 10 kg) ................................................................... 9 Section, Figure 8, and Application Notes Section ........................ 7 Added LGA CAV Tape and Reel Outline Dimensions, Added Circuit Notes Section........................................................... 7 Figure 12..........................................................................................11 Changes to Temperature Humidity Bias (THB) Description Column, Table 5 and Temperature Cycle Column, Table 5 ...... 10 12/10Rev. 0 to Rev. A Changes to Ordering Guide .......................................................... 11 Changes to Applications Section and General Deleted Figure 12 ............................................................................ 11 Description Section ........................................................................... 1 Changes to Table 1 ............................................................................. 3 Changes to Table 2 ............................................................................. 4 7/10Revision 0: Initial Version Rev. C Page 2 of 12 OBSOLETE