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ADMP401-1ACEZ-RL7 Datasheet(PDF) 1 Page - Analog Devices |
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ADMP401-1ACEZ-RL7 Datasheet(HTML) 1 Page - Analog Devices |
1 / 8 page Omnidirectional Microphone with Bottom Port and Analog Output Preliminary Technical Data ADMP401-1 Rev. PrB Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2008 Analog Devices, Inc. All rights reserved. FEATURES 4.72 mm × 3.76 mm × 1.0 mm surface mount package High SNR: 62 dBA High sensitivity: −37 dBV Flat frequency response from 100 Hz to over 12 kHz Low current consumption: <200 μA Single-ended analog output High PSRR: >50 dB Compatible with Sn/Pb and Pb-free solder processes RoHS/WEEE compliant APPLICATIONS Cell phones PC audio Digital cameras Bluetooth headsets GENERAL DESCRIPTION The ADMP401-1 is a high quality, low cost, low power analog output bottom-ported omnidirectional MEMS microphone. The ADMP401-1 consists of a MEMS microphone element and an output amplifier. The ADMP401-1 has a high SNR and high sensitivity, making it an excellent choice for far field applications. The ADMP401-1 has a flat wideband frequency response resulting in natural sound with high intelligibility. Low current consumption enables long battery life for portable applications. A built-in particle filter provides for high reliability. The ADMP401-1 is available in a thin 4.72 mm × 3.76 mm × 1.0 mm surface mount package. The ADMP401-1 is reflow solder compatible with no sensitivity degradation. FUNCTIONAL BLOCK DIAGRAM VDD GND MEMBRANE BACKPLATE MEMS SIGNAL MEMS VBIAS REFERENCE VOLTAGE BIAS CURRENT BUFFER OUTPUT DRIVER – + MEMS ASIC OUTPUT FILTER CHARGE PUMP GENERATOR Figure 1. |
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