INMP404

Omnidirectional Microphone with Bottom Port and Analog Output

GENERAL DESCRIPTION

power, analog-output bottom-ported omnidirectional MEMS

microphone. The INMP404 consists of a MEMS microphone

element, an impedance converter, and an output amplifier.

The INMP404 sensitivity specification makes it an excellent

choice for near-field applications. The INMP404 has a

wideband frequency response, resulting in natural sound with

high intelligibility. Its low current consumption enables long

battery life for portable applications.

The INMP404 complies with the TIA-920 Telecommunications

Telephone Terminal Equipment Transmission Requirements

for Wideband Digital Wireline Telephones standard.

The INMP404 is available in a miniature 3.35 ×

2.50 × 0.88 mm surface-mount package. It is reflow solder

compatible with no sensitivity degradation. The INMP404 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

•

3.35 × 2.50 × 0.88 mm Surface-Mount Package

•

SNR of 62 dBA

•

Sensitivity of −38 dBV

•

Flat Frequency Response from 100 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

INMP404ACEZ-R0*

−40°C to +85°C

INMP404ACEZ-R7†

−40°C to +85°C

EV_INMP404-FX

—

* – 13” Tape and Reel

† – 7” Tape and reel to be discontinued. Contact sales@invensense.com for

availability.

OUTPUT

AMPLIFIER

INMP404

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-INMP404-00

Revision: 1.0.

Release Date: Preliminary 02/06/14