InvenSense

INMP401 Datasheet Preview

INMP401 Datasheet

Omnidirectional Microphone

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INMP401

Omnidirectional Microphone with Bottom Port and Analog Output

GENERAL DESCRIPTION

The INMP401* is a high-quality, high-performance, low-

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

• Sensitivity 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

FUNCTIONAL BLOCK DIAGRAM

OUTPUT

AMPLIFIER

OUTPUT

INMP401

POWER

VDD GND

ORDERING INFORMATION

PART

INMP401ACEZ-R0*

INMP401ACEZ-R7†

EV_INMP401

EV_INMP401-FX

* – 13” Tape and Reel

TEMP RANGE

−40°C to +85°C

—

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

sales@invensense.com for availability.

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: 1.1

Rev Date: 05/21/2014

InvenSense

INMP401 Datasheet Preview

INMP401 Datasheet

Omnidirectional Microphone

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INMP401

TABLE OF CONTENTS

General Description .................................................................................................................................................1

Applications .............................................................................................................................................................1

Features ...................................................................................................................................................................1

Functional Block Diagram ........................................................................................................................................1

Ordering Information...............................................................................................................................................1

Table of Contents............................................................................................................................................................ 2

Specifications .................................................................................................................................................................. 3

Table 1. Electrical Characteristics ............................................................................................................................3

Absolute Maximum Ratings ............................................................................................................................................ 4

Table 2. Absolute Maximum Ratings .......................................................................................................................4

ESD Caution .............................................................................................................................................................4

Soldering Profile.......................................................................................................................................................5

Table 3. Recommended Soldering Profile*..............................................................................................................5

Pin Configurations And Function Descriptions ............................................................................................................... 6

Table 4. Pin Function Descriptions...........................................................................................................................6

Typical Performance Characteristics............................................................................................................................... 7

Applications Information ................................................................................................................................................ 8

Connecting To Audio Codecs ...................................................................................................................................8

Supporting Documents ................................................................................................................................................... 9

Evaluation Board User Guide...................................................................................................................................9

application Notes (product specific)........................................................................................................................9

Application Notes (general) .....................................................................................................................................9

PCB Design And Land Pattern Layout ........................................................................................................................... 10

Handling Instructions .................................................................................................................................................... 11

Pick And Place Equipment .....................................................................................................................................11

Reflow Solder.........................................................................................................................................................11

Board Wash............................................................................................................................................................11

Outline Dimensions....................................................................................................................................................... 12

Ordering Guide ......................................................................................................................................................13

Revision History .....................................................................................................................................................13

Compliance Declaration Disclaimer .......................................................................................................................14

Document Number: DS-INMP401-00

Revision: 1.1

Page 2 of 14

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INMP401 Datasheet

Omnidirectional Microphone

INMP401 Datasheet

Omnidirectional Microphone

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