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ADMP401-1ACEZ-RL Scheda tecnica(PDF) 1 Page - Analog Devices

Il numero della parte ADMP401-1ACEZ-RL
Spiegazioni elettronici  Omnidirectional Microphone with Bottom Port and Analog Output
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Produttore elettronici  AD [Analog Devices]
Homepage  http://www.analog.com
Logo AD - Analog Devices

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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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