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ADMP405ACEZ-RL7 bảng dữ liệu(PDF) 1 Page - Analog Devices |
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ADMP405ACEZ-RL7 bảng dữ liệu(HTML) 1 Page - Analog Devices |
1 / 12 page Omnidirectional Microphone with Bottom Port and Analog Output Preliminary Technical Data ADMP405 Rev. PrH Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license isgranted by implication or otherwise under any patent or patent rightsof 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 ©2010 Analog Devices, Inc. All rights reserved. FEATURES Tiny 3.35 mm × 2.50 mm × 0.88 mm surface-mount package High SNR of 62 dBA High sensitivity of −38 dBV Flat frequency response from 200 Hz to 15 kHz Low current consumption: <250 µA Single-ended analog output High PSRR of 70 dB Compatible with Sn/Pb and Pb-free solder processes RoHS/WEEE compliant APPLICATIONS Smartphones and feature phones Digital video cameras Bluetooth headsets Video phones Teleconferencing systems GENERAL DESCRIPTION The ADMP405 is a high quality, low cost, low power, analog output bottom-ported omnidirectional MEMS microphone. The ADMP405 consists of a MEMS microphone element, an impedance converter, and an output amplifier. The ADMP405 sensitivity specification makes it an excellent choice for both near field and far field applications. The ADMP405 has a high SNR and flat, wideband frequency response, resulting in natural sound with high intelligibility. The specially designed low- frequency cutoff reduces wind noise. Low current consumption enables long battery life for portable applications. A built-in particle filter provides high reliability. The ADMP405 complies with the TIA-920 Telecommunications Telephone Terminal Equipment Transmission Requirements for Wideband Digital Wireline Telephones standard. The ADMP405 is available in an ultraminiature 3.35 mm × 2.50 mm × 0.88 mm surface-mount package. It is reflow solder compatible with no sensitivity degradation. The ADMP405 is halide free. FUNCTIONAL BLOCK DIAGRAM Figure 1. ASIC VDD OUTPUT GND MEMS MEMBRANE BACKPLATE IMPEDANCE CONVERTER OUTPUT AMPLIFIER ADMP405 |
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