Ultralow Noise Microphone with
Bottom Port and Analog Output
Data Sheet
ADMP504
Rev. A
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
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
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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 µA
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
ADMP504
POWER
10140-001
V
DD
GND
OUTPUT
Figure 1.
10140-011
Figure 2. Isometric Views of ADMP504 Microphone Package
GENERAL DESCRIPTION
The ADMP504
1
is a high performance, very low noise, low
power, analog output, bottom-ported omnidirectional MEMS
microphone. The ADMP504 consists of a MEMS microphone
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 is
function- and pin-compatible with the ADMP404 microphone,
providing an easy upgrade path.
The 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
compatible with no sensitivity degradation. The ADMP504 is
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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