MP34DT01 STMicroelectronics, MP34DT01 Datasheet

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MP34DT01

Manufacturer Part Number
MP34DT01
Description
Mems Audio Sensor Omnidirectional Digital Microphone
Manufacturer
STMicroelectronics
Datasheet

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Features
Applications
Table 1.
January 2012
Single supply voltage
Low power consumption
120 dBSPL acoustic overload point
63 dB signal-to-noise ratio
Omnidirectional sensitivity
–26 dBFS sensitivity
PDM output
HCLGA package
– Top-port design
– SMD-compliant
– EMI-shielded
– ECOPACK
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
MP34DT01TR
Part number
MP34DT01
Device summary
®
, RoHS, and “Green” compliant
Temperature range [°C]
-30 to +70
-30 to +70
Doc ID 022331 Rev 4
omnidirectional digital microphone
HCLGA (3 x 4 x 1) mm 4LD
HCLGA (3 x 4 x 1) mm 4LD
Description
The MP34DT01 is an ultra-compact, low-power,
omnidirectional, digital MEMS microphone built
with a capacitive sensing element and an IC
interface.
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 MP34DT01 has an acoustic overload point of
120 dBSPL with a 63 dB signal-to-noise ratio and
–26 dBFS sensitivity.
The MP34DT01 is available in a top-port, SMD-
compliant, EMI-shielded package and is
guaranteed to operate over an extended
temperature range from -30 °C to +70 °C.
Package
HCLGA 3x4x1 4LD
MEMS audio sensor
MP34DT01
Tape and reel
Packing
Tray
www.st.com
1/14
1

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MP34DT01 Summary of contents

Page 1

... PDM format. The MP34DT01 has an acoustic overload point of 120 dBSPL with signal-to-noise ratio and –26 dBFS sensitivity. The MP34DT01 is available in a top-port, SMD- compliant, EMI-shielded package and is guaranteed to operate over an extended temperature range from -30 °C to +70 °C. Package ...

Page 2

... Contents Contents 1 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2 Acoustic and electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.1 Acoustic and electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.2 Timing characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.3 Frequency response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4 Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 4.1 L/R channel selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 5 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 6 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 2/14 Doc ID 022331 Rev 4 MP34DT01 ...

Page 3

... MP34DT01 List of tables Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Table 2. Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Table 3. Acoustic and electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Table 4. Distortion specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Table 5. Timing characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Table 6. Frequency response mask for digital microphones . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Table 7. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Table 8. L/R channel selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Table 9. Recommended soldering profile limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Table 10. ...

Page 4

... List of figures List of figures Figure 1. Pin connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Figure 2. Timing waveforms Figure 3. Typical frequency response normalized at 1 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Figure 4. Recommended soldering profile limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Figure 5. HCLGA 4-lead package outline 4/14 Doc ID 022331 Rev 4 MP34DT01 ...

Page 5

... MP34DT01 1 Pin description Figure 1. Pin connections (TOP VIEW) Table 2. Pin description Pin # (ground ring) LR Vdd Pin name Vdd Power supply LR Left/Right channel selection CLK Synchronization input clock DOUT Left/Right PDM data output GND 0 V supply Doc ID 022331 Rev 4 Pin description ...

Page 6

... Table 4. Distortion specifications Parameter Distortion Distortion 6/14 Test condition Mean value (2) A-weighted at 1 kHz Guaranteed by design (3) (4) Guaranteed by design Test condition 100 dBSPL ( kHz) 115 dBSPL (1 kHz) Doc ID 022331 Rev 4 MP34DT01 (1) Min. Typ. Max. Unit 1.64 1.8 2. µ 120 dBSPL ...

Page 7

... MP34DT01 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 R,EN T Data disabled on DATA line, L/R pin = 1 R,DIS T Data enabled on DATA line, L/R pin = 0 ...

Page 8

... Frequency response mask for digital microphones Frequency / Hz 20...100 100...8000 8000...20000 °C and acoustic stimulus = 1 Pa (94 dB SPL) 8/14 100 Frequency [Hz] (1) Lower limit - Doc ID 022331 Rev 4 MP34DT01 1000 10000 AM045317v1 Upper limit Unit +5 dBr 1kHz +2 dBr 1kHz +5 dBr 1kHz ...

Page 9

... MP34DT01 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 maximum rating conditions for extended periods may affect device reliability ...

Page 10

... L/R channel selection The L/R digital pad lets the user select the DOUT signal pattern as shown in L/R pin must be connected to Vdd or GND. Table 8. L/R channel selection L/R GND Vdd 10/14 CLK low Data valid High impedance Doc ID 022331 Rev 4 MP34DT01 Table 8. The CLK high High impedance Data valid ...

Page 11

... MP34DT01 5 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 at: www.st.com. ® ECOPACK trademark. Soldering information The HCLGA 3x4 4LD package is also compliant with the RoHS and “Green” standards and is qualified for soldering heat resistance according to JEDEC J-STD-020 ...

Page 12

... Typ Max 1.000 1.100 4.000 4.100 0.500 0.700 0.400 0.500 3.000 3.100 1.500 1.700 1.350 1.400 0.850 0.900 0.675 0.725 0.425 0.475 0.950 1.000 0.400 0.450 3.100 3.150 3.800 3.850 2.100 2.150 2.800 2.850 0.300 0.350 0.400 0.100 0.050 MP34DT01 G4 v2b ...

Page 13

... MP34DT01 6 Revision history Table 11. Document revision history Date 06-Oct-2011 18-Nov-2011 29-Nov-2011 04-Jan-2012 Revision 1 Initial release 2 Removed “stereo” from title, Features, and 3 Updated Features and Updated Figure 3: Typical frequency response normalized at 1 kHz 4 Added So limits to Table 3: Acoustic and electrical characteristics Minor textual updates ...

Page 14

... Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Philippines - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America 14/14 Please Read Carefully: © 2012 STMicroelectronics - All rights reserved STMicroelectronics group of companies www.st.com Doc ID 022331 Rev 4 MP34DT01 ...

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