January 2016
DocID018658 Rev 8
1/15
This is information on a product in full production.
www.st.com
MP45DT02
MEMS audio sensor omnidirectional digital microphone
Datasheet - production data
Features
Single supply voltage
Low power consumption
120 dBSPL acoustic overload point
Omnidirectional sensitivity
PDM single-bit output with option for stereo
configuration
HLGA package (SMD-compliant) plastic or
metal
ECOPACK
®
, RoHS, and “Green” compliant
Applications
Mobile terminals
Laptop and notebook computers
Portable media players
VoIP
Speech recognition
A/V eLearning devices
Gaming and virtual reality input devices
Digital still and video cameras
Antitheft systems
Description
The MP45DT02 is a compact, low-power, top-
port, omnidirectional, digital MEMS microphone.
The MP45DT02 is built with a sensing element
and an IC interface with stereo capability.
The sensing element, capable of detecting
acoustic waves, is manufactured using a
specialized silicon micromachining process to
produce audio sensors.
The IC interface is manufactured using a CMOS
process that allows designing a dedicated circuit
able to provide a digital signal externally in PDM
format.
The MP45DT02 has an acoustic overload point of
120 dBSPL with a best on the market 61 dB
signal-to-noise ratio and -26 dB sensitivity.
The MP45DT02 is available in an SMD-compliant
metal (M) or plastic package and is guaranteed to
operate over an extended temperature range
from -30 °C to +85 °C.
The MP45DT02’s digital output and package size
(1.25 mm thick) make this device the best
solution for laptop and portable computing
applications.
Table 1: Device summary
Order code
Temp. range [°C]
Package
Packing
MP45DT02
-30 to +85
HLGA
4.72x3.76 6LD
Tray
MP45DT02TR
-30 to +85
HLGA
4.72x3.76 6LD
Tape and reel
MP45DT02TR-M
-30 to +85
HLGA
4.72x3.76 6LD
Tape and reel
HLGA (4.72 x 3.76 mm) 6LD
Obsolete Product(s) - Obsolete Product(s)
MP45DT02
2/15
DocID018658 Rev 8
Contents
1 Pin description ................................................................................ 3
2 Acoustic and electrical specifications ........................................... 4
2.1 Acoustic and electrical characteristics ............................................... 4
2.2 Timing characteristics ....................................................................... 5
2.3 Frequency response ......................................................................... 6
3 Sensing element .............................................................................. 7
4 Absolute maximum ratings ............................................................. 8
5 Functionality .................................................................................... 9
5.1 L/R channel selection ........................................................................ 9
6 Application recommendations ..................................................... 10
7 Package information ..................................................................... 11
7.1 Soldering information ...................................................................... 11
7.2 HLGA (4.72 x 3.76 mm) 6L (plastic) package information ............... 12
7.3 HLGA (4.72 x 3.76 mm) 6L (metal) package information ................ 13
8 Revision history ............................................................................ 14
Obsolete Product(s) - Obsolete Product(s)
MP45DT02
Pin description
DocID018658 Rev 8
3/15
1 Pin description
Figure 1: Pin connections
Table 2: Pin description
Pin n°
Pin
name
Function
1 GND 0 V supply
2 LR
Left/right channel selection;
MIC1 LR is connected to GND or Vdd and MIC2 LR is connected to Vdd or GND
(see Figure 5: "MP45DT02 electrical connections for stereo configuration")
3 GND 0 V supply
4 CLK Synchronization input clock
5 DOUT Left/right PDM data output
6 Vdd Power supply
)WEIVMOTTOB(
DOUT
CLK
Vdd
LR
GND
GND
1
34
5
6
5
4
1
2
3
Obsolete Product(s) - Obsolete Product(s)

MP45DT02

Mfr. #:
Manufacturer:
STMicroelectronics
Description:
MEMS Microphones MEMS Audio Sensor Omni MIC 120dBSPL
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

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