INMP401

Omnidirectional Microphone with Bottom Port and Analog Output

GENERAL DESCRIPTION

The INMP401

power, analog-output bottom-ported omnidirectional MEMS

microphone. The INMP401 consists of a MEMS microphone

element, an impedance converter, and an output amplifier.

The INMP401 sensitivity specification makes it an excellent

choice for near-field applications. The INMP401 has a

wideband frequency response, resulting in natural sound with

high intelligibility. The specially designed low frequency cutoff

reduces wind noise. Its low current consumption enables long

battery life for portable applications.

The INMP401 complies with the TIA-920 Telecommunications

Telephone Terminal Equipment Transmission Requirements

for Wideband Digital Wireline Telephones standard.

The INMP401 is available in a 4.72 × 3.76 × 1.00 mm surface-

mount package. It is reflow solder compatible with no

sensitivity degradation. The INMP401 is halide free.

*Protected by U.S. Patents 7,449,356; 7,825,484; 7,885,423; and 7,961,897.

Other patents are pending.

APPLICATIONS

•

Mobile Devices

•

Teleconferencing Systems

•

Headsets

•

Security Panels

•

Intercom Devices

FEATURES

•

4.72 × 3.76 × 1.00 mm Surface-Mount Package

•

SNR of 62 dBA

•

S

ensitivity of −42 dBV

•

Flat Frequency Response from 60 Hz to 15 kHz

•

Low Current Consumption: <250 µA

•

Single-Ended Analog Output

•

High PSR of 70 dB

•

Compatible with Sn/Pb and Pb-Free Solder Processes

•

RoHS/WEEE Compliant

ORDERING INFORMATION

PART

TEMP RANGE

INMP401ACEZ-R0*

−40°C to +85°C

INMP401ACEZ-R7†

−40°C to +85°C

EV_INMP401

—

EV_INMP401-FX

—

* – 13” Tape and Reel

† – 7” Tape and reel to be discontinued. Contact

sales@invensense.com for availability.

OUTPUT

AMPLIFIER

INMP401

POWER

VDD

GND

OUTPUT

FUNCTIONAL BLOCK DIAGRAM

InvenSense reserves the right to change the detail

specifications as may be required to permit

improvements in the design of its products.

InvenSense Inc.

1745 Technology Drive, San Jose, CA 95110 U.S.A

+1(408) 988–7339

www.invensense.com

Document Number: DS-INMP401-00

Revision: 1.0.

Release Date: 02/06/2014