
Ultralow Noise Microphone with
Bottom Port and Analog Output
Data Sheet
Rev. A
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rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
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2011–2012 Analog Devices, Inc. All rights reserved.
FEATURES
Tiny, 3.35 mm × 2.50 mm × 0.88 mm surface-mount package
Omnidirectional response
Very high SNR of 65 dBA
Sensitivity of 38 dBV
Extended frequency response from 100 Hz to 20 kHz
Low current consumption: 180 A
Single-ended analog output
120 dB maximum SPL
High PSR of 70 dBV
Compatible with Sn/Pb and Pb-free solder processes
RoHS/WEEE compliant
APPLICATIONS
Smartphones and feature phones
Tablet computers
Teleconferencing systems
Digital still and video cameras
Bluetooth headsets
Notebook PCs
Security and surveillance
FUNCTIONAL BLOCK DIAGRAM
OUTPUT
AMPLIFIER
POWER
10140-
001
VDD GND
OUTPUT
Figure 1.
10140-
011
Figure 2. Isometric Views o
f ADMP504 Microphone Package
GENERAL DESCRIPTION
T
he ADMP5041 is a high performance, very low noise, low
power, analog output, bottom-ported omnidirectional MEMS
element, an impedance converter and an output amplifier. The
ADMP504 sensitivity specification makes it an excellent choice
for both near field and far field applications. The
ADMP504 isfunction- and pin-compatible with the
ADMP404 microphone,
providing an easy upgrade path.
T
he ADMP504 has very high SNR and extended wideband
frequency response, resulting in natural sound with high
intelligibility. Low current consumption enables long battery
life for portable applications. The
ADMP504 complies with the
TIA-920 Telecommunications Telephone Terminal Equipment
Transmission Requirements for Wideband Digital Wireline
Telephones standard.
The
ADMP504 is available in an ultraminiature 3.35 mm ×
2.5 mm × 0.88 mm surface-mount package. It is reflow solder
halide free.
1
Protected by U.S. Patents 7,449,356; 7,825,484; 7,885,423; 7,961,897. Other patents are pending.
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