MEMS microphone. IM69D120 Datasheet

IM69D120 microphone. Datasheet pdf. Equivalent

IM69D120 Datasheet
Recommendation IM69D120 Datasheet
Part IM69D120
Description High performance digital XENSIV MEMS microphone
Feature IM69D120; IM69D120 High performance digital XENSIVTM MEMS microphone Description The IM69D120 is designed for.
Manufacture Infineon
Datasheet
Download IM69D120 Datasheet




Infineon IM69D120
IM69D120
High performance digital XENSIVTM MEMS microphone
Description
The IM69D120 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 95dB. The microphone distortion does not exceed 1% even at sound pressure levels of 118dBSPL. The
flat frequency response ( 28Hz 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 25dBSPL (SNR 69dB(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 low-noise preamplifier and a high-performance sigma-delta
ADC. Different power modes can be selected in order to suit specific current consumption requirements.
Each IM69D120 microphone is calibrated with an advanced Infineon calibration algorithm, resulting in small
sensitivity tolerances (± 1dB). The phase response is tightly matched (± 2°) between microphones, in order to
support beamforming applications.
Features
• Dynamic range of 95dB
- Signal to noise ratio of 69dB(A) SNR
- <1% total harmonic distortions up to
118dBSPL
- Acoustic overload point at 120dBSPL
• Sensitivity (± 1dB) and phase (± 2° @1kHz)
matched
• Very fast analog to digital conversion speed (6µs
latency @1kHz
• Power optimized modes determined by PDM
clock frequency
• Package dimensions: 4mm x 3mm x 1.2mm
• PDM output
• Omnidirectional pickup pattern
• Flat frequency response with low frequency roll off
at 28Hz
Typical applications
• Devices with Voice User Interface (VUI)
• High quality audio capturing
- Smart speakers
- Conference systems
- Home automation
- Cameras and camcorders
- IOT devices
• Industrial or home monitoring with audio pattern
• Active Noise Cancellation (ANC) headphones and
detection
earphones
Datasheet
www.infineon.com
Please read the Important Notice and Warnings at the end of this document
1.0
2017-12-20



Infineon IM69D120
IM69D120
High performance digital XENSIVTM MEMS microphone
Use cases
Use cases
• Below 1% total harmonic distortion
- Voice command during music from the loud
speaker
- Effective active noise cancellation even close
to loud noise source
- Recordings in a discotheque or at a rock
concert
• High Signal to noise ratio
- Far field audio signal pick-up
- Low volume audio and whispered voice
capturing
- Microphone noise is no longer limiting the
audio chain
Sensitivity and phase matching
- Full utilization of voice algorithms capability
- Audio beam forming
- High and precise attenuation of background
noise
Power optimized modes
- Low current consumption for always on
applications
- Long operating time of battery powered
devices
Block diagram
BACKPLATE 1
MEMBRANE
BACKPLATE 2
MEMS
MEMS BIAS
CHARGE PUMP
AMP
ADC
ASIC
Figure 1 IM69D120 block diagram
GROUND
VDD
VOLTAGE REGULATORS
DIGITAL SIGNAL
PROCESSING
DIGITAL CORE
CALIBRATION
COEFFICIENTS
1-BIT
PDM
INTERFACE
POWER
MODE
DETECTOR
DATA
SELECT
CLOCK
Product validation
Technology qualified for industrial applications.
Ready for validation in industrial applications according to the relevant tests of IEC 60747 and 60749 or
alternatively JEDEC47/20/22.
Datasheet
2 1.0
2017-12-20



Infineon IM69D120
IM69D120
High performance digital XENSIVTM MEMS microphone
Table of contents
Table of contents
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Typical applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Use cases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Product validation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Table of contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1 Typical performance characterstics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
2 Acoustic characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1 Free field frequency response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
3 Electrical parameters and characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
3.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.2 Electrical parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4 Typical stereo application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5 Reliability specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
6 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
7 Footprint and stencil recommendation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
8 Packing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Disclaimer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Datasheet
3 1.0
2017-12-20







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