MP34DB01TR STMicroelectronics, MP34DB01TR Datasheet

IC MEMS MICROPHONE OMNIDIR 4RHLG

MP34DB01TR

Manufacturer Part Number
MP34DB01TR
Description
IC MEMS MICROPHONE OMNIDIR 4RHLG
Manufacturer
STMicroelectronics
Series
-r
Type
MEMS (Silicon) - Digitalr
Datasheet

Specifications of MP34DB01TR

Sensitivity
-26dB ±3dB
Voltage - Rated
1.8V
Current
650µA
Size / Dimension
Rectangular - 4.00mm L x 3.00mm W x 1.00mm H
S/n Ratio
62dB
Filter Type
-
Impedance
-
Frequency
2.4MHz
Termination
Solder Pads
Direction
Omnidirectional
Port Location
Bottom
Lead Free Status / Rohs Status
Compliant

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Features
Application
Description
The MP34DB01 is a compact, low-power, bottom
port, omnidirectional digital MEMS microphone.
The MP34DB01 is built with a capacitive sensing
element and an IC interface with stereo operation
capability.
Table 1. Device summary
April 2011
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to
change without notice.
Single supply voltage
Low power consumption
120 dBSPL acoustic overload point
Omnidirectional sensitivity
PDM single-bit output with option for stereo
configuration
RHLGA package (SMD-compliant)
ECOPACK
Mobile terminals and VoIP
Laptop and notebook computers
Portable media players
Speech recognition
A/V eLearning devices
Digital still and video cameras
Gaming and virtual reality input devices
Antitheft systems
MP34DB01TR
Part number
MP34DB01
®
, RoHS and “Green” compliant
Temperature range [°C]
-30 to +85
-30 to +85
Doc ID 17924 Rev 2
omnidirectional digital microphone
The sensing element, capable of detecting
acoustic waves, is manufactured using a
specialized silicon micromachining process
dedicated 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 MP34DB01 has an acoustic overload point of
120 dBSPL with a best on the market 62 dB
signal-to-noise ratio and -26 dB sensitivity.
The MP34DB01 is available in an SMD-compliant
package and it is guaranteed to operate over an
extended temperature range from -30 °C to
+85 °C.
RHLGA 3x4 4LD
RHLGA 3x4 4LD
Package
RHLGA 3x4 4LD
MEMS audio sensor
MP34DB01
Tape and reel
Packing
Tray
Preliminary data
www.st.com
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MP34DB01TR Summary of contents

Page 1

... IC interface with stereo operation capability. Table 1. Device summary Part number Temperature range [°C] MP34DB01 MP34DB01TR April 2011 This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice. omnidirectional digital microphone The sensing element, capable of detecting ...

Page 2

Contents Contents 1 Pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 3

MP34DB01 List of tables Table 2. Pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 4

List of figures List of figures Figure 1. Pin connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 5

MP34DB01 1 Pin descriptions Figure 1. Pin connections Table 2. Pin descriptions Pin # Pin name CLK Synchronization input clock LR Left/right channel selection Vdd Power supply DOUT Left/right PDM data output GND 0 V ...

Page 6

Acoustic and electrical specifications 2 Acoustic and electrical specifications 2.1 Acoustic and electrical characteristics The values listed in the table below are specified for Vdd = 1.8 V, Clock = 2.4 MHz °C, unless otherwise noted. Table ...

Page 7

MP34DB01 2.2 Timing characteristics Table 5. Timing characteristics Parameter f Clock frequency for normal mode CLK f Clock frequency for power-down mode PD T Clock period for normal mode CLK T Data enabled on DATA line, L/R pin = 1 ...

Page 8

Acoustic and electrical specifications 2.3 Frequency response Figure 3. Typical frequency response normalized at 1 kHz Table 6. Frequency response mask for digital microphones Frequency / Hz 20...100 100...8000 8000...20000 °C and acoustic stimulus = ...

Page 9

MP34DB01 3 Absolute maximum ratings Stresses above those listed as “absolute maximum ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device under these conditions is not implied. Exposure to ...

Page 10

Functionality 4 Functionality 4.1 L/R channel selection The L/R digital pad lets the user select the DOUT signal pattern as explained in L/R pin must be connected to Vdd or GND. Table 8. L/R channel selection L/R GND Vdd 10/16 ...

Page 11

MP34DB01 5 Application recommendations Figure 4. MP34DB01 electrical connections Figure 5. MP34DB01 electrical connections for stereo configuration Power supply decoupling capacitors (100 nF ceramic, 10 µF ceramic) should be placed as near as possible to pin 3 of the device ...

Page 12

Package mechanical data 6 Package mechanical data In order to meet environmental requirements, ST offers these devices in different grades of ® ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product status are available ...

Page 13

MP34DB01 Figure 6. Recommended soldering profile limits SMAX T SMIN PREHEAT Table 9. Recommended soldering profile limits Description Average ramp rate Preheat Minimum temperature Maximum temperature Time ( SMIN Ramp-up ...

Page 14

Package mechanical data Figure 7. RHLGA 4-lead package outline Bottom Port Indicator TOP VIEW Table 10. RHLGA 4-lead package dimensions Symbol ...

Page 15

MP34DB01 7 Revision history Table 11. Document revision history Date 28-Mar-2011 05-Apr-2011 Revision 1 Initial release. 2 Updated Table 3 and Doc ID 17924 Rev 2 Revision history Changes Table 5. 15/16 ...

Page 16

... Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...

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