Infineon IM69D130 Quick Start Manual

IM69D130 Microphone

Shield2Go

Quick Start

V1.0.1

The IM69D130 MEMS microphone is designed for applications where low self-noise
(high SNR), wide dynamic range, low distortions and a high acoustic overload point is
required. Infineon's Dual Backplate MEMS technology is based on a miniaturized
symmetrical microphone design, similar as utilized in studio condenser microphones,

and results in high linearity of the output signal within a dynamic range of 105 dB. The

microphone distortion does not exceed 1% even at sound pressure levels of
128 dBSPL. The flat frequency response ( 28 Hz low-frequency roll-off) and tight
manufacturing tolerance result in close phase matching of the microphones, which is
important for multi-microphone (array) applications.
With its low equivalent noise floor of 25 dBSPL (SNR 69 dB(A)) the microphone is no

longer the limiting factor in the audio signal chain and enables higher performance of

voice recognition algorithms. The digital microphone ASIC contains an extremely low­noise preamplifier and a high-performance sigma-delta ADC. Different power modes
can be selected in order to suit specific current consumption requirements.

Introduction

Each IM69D130 microphone is calibrated with an advanced
Infineon calibration algorithm, resulting in small sensitivity
tolerances (± 1 dB). The phase response is tightly matched
(± 2°) between microphones, in order to support
beamforming applications.

Link to Datasheet and Product Page

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2018-07-17 Copyright © Infineon Technologies AG 2018. All rights reserved.

Evaluation Board Notes

Information

• Supply voltage is typ. 3.3 V for any pin, please refer

to IM69D130 datasheet for more details about

maximum ratings of the IM69D130 microphone
itself (if microphone parts are broken off)

• Pin out on top and bottom is directly connected to

the pins of the IM69D130 with channel select L/R if
broken off

• If microphone parts are broken off, all pins of the

IM69D130 except the SELECT one (preselected via
0 Ohm resistors) are available

• Software compatible with Arduino and examples

fully integrated into the Arduino IDE

• Sales Name S2GO MEMSMIC IM69 and OPN

S2GOMEMSMICIM69DTOBO1

Ensure that no voltage applied to any of the pins exceeds

the absolute maximum rating of the IM69D130 of 4 V

Breakable

Link to Board Page

3

2018-07-17 Copyright © Infineon Technologies AG 2018. All rights reserved.