Omnidirectional Microphone with

Data Sheet

ADMP441

Rev. A

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FEATURES

Digital I²S interface with high precision 24-bit data

High SNR of 61 dBA

High sensitivity of −26 dBFS

Flat frequency response from 60 Hz to 15 kHz

Low current consumption of 1.4 mA

High PSR of −75 dBFS

Small 4.72 mm × 3.76 mm × 1 mm surface-mount package

Compatible with Sn/Pb and Pb-free solder processes

RoHS/WEEE compliant

APPLICATIONS

Teleconferencing systems

Gaming consoles

Mobile devices

Laptops

Tablets

Security systems

FUNCTIONAL BLOCK DIAGRAM

ADMP441

ADC

POWER

MANAGEMENT

SCK

SD

WS

FILTER

SERIAL

PORT

HARDWARE

CONTROL

Figure 1.

BOTTOM

TOP

Figure 2. Isometric Views of ADMP441 Microphone Package

GENERAL DESCRIPTION

The ADMP4411 is a high performance, low power, digital output,

omnidirectional MEMS microphone with a bottom port. The

complete ADMP441 solution consists of a MEMS sensor, signal

conditioning, an analog-to-digital converter, antialiasing filters,

power management, and an industry standard 24-bit I2S inter-

face. The I2S interface allows the ADMP441 to connect directly

to digital processors, such as DSPs and microcontrollers, with-

out the need for an audio codec in the system.

The ADMP441 has a high SNR and high sensitivity, making it

an excellent choice for far field applications. The ADMP441 has

a flat wideband frequency response, resulting in natural sound

with high intelligibility. A built-in particle filter provides high

reliability.

The ADMP441 is available in a thin 4.72 mm × 3.76 mm ×

1 mm surface-mount package. It is reflow solder compatible

with no sensitivity degradation. The ADMP441 is halide free.