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MP34DT06JTR
Electronics Part Number
MP34DT06JTR-WXManufacturer
STMicroelectronics
MP34DT06JTR
Description
MEMS PDM Digital Microphone, Omni, -26 dB, SMDInventory
911 Pcs New Original In Stock
PDM digital MEMS mic, 100Hz–10kHz, omnidirectional, −26dB±3dB, solder pads. Miniature mic for voice control, teleconferencing and industrial sensing.
Quantity
Minimum 1
Minimum 1
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Basic cost: USD 70.00
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Technical Specifications
Category
Microphones
Manufacturer
STMicroelectronics
Packaging
Cut Tape (CT) & Digi-Reel®
Series
-
Base Product Number
MP34DT06
Product Status
Active
Type
MEMS (Silicon)
Termination
Solder Pads
Voltage - Rated
1.8 V
Output Type
Digital, PDM
Current - Supply
650 µA
Size / Dimension
0.118" L x 0.157" W (3.00mm x 4.00mm)
Frequency Range
100 Hz ~ 10 kHz
Ratings
-
Port Location
Top
Shape
Rectangular
Direction
Omnidirectional
Sensitivity
-26dB ±3dB @ 94dB SPL
S/N Ratio
64dB
Height (Max)
0.043" (1.10mm)
Data Sheet Document (D)
Datasheets
Download MP34DT06JTR Product Specification (PDF)
HTML Datasheet
MP34DT06JTR-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
3 (168 Hours)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8518.10.8030
Additional Information
Other Names
497-18180-6 497-18180-2 497-18180-1
Standard Package
4,000
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Frequently Asked Questions (FAQ)
What are the key design-in risks when integrating the MP34DT06JTR into a compact PCB layout with hig
When integrating the MP34DT06JTR in high-density PCBs, designers must guard against crosstalk and ground bounce due to its digital PDM output. The microphone's 650 µA supply current is low, but fast PDM edge transitions can couple noise into adjacent analog or RF traces. To mitigate, maintain a solid ground plane under the MP34DT06JTR, keep trace lengths short, and avoid routing high-speed signals beneath it. Also, ensure the 3.0mm x 4.0mm footprint includes adequate pad extensions for reworkability, especially given its MSL-3 moisture sensitivity requiring proper storage and controlled reflow profiles during assembly.
How does the MP34DT06JTR compare to the Infineon IM69D130 in terms of SNR and system-level power tra
Compared to the Infineon IM69D130 (SNR: 73dB), the MP34DT06JTR offers a lower 64dB SNR, which may impact audio clarity in quiet environments. However, the MP34DT06JTR draws only 650 µA at 1.8V, making it more suitable for ultra-low-power voice recorders where battery life is critical. The IM69D130, while higher performing, consumes ~1.2 mA. For applications like IoT sensors or wearables where moderate audio quality suffices, the MP34DT06JTR provides a better balance of small 3.0mm x 4.0mm footprint, omnidirectional response, and power efficiency, though designers should implement noise-gating firmware to compensate for lower SNR.
Can the MP34DT06JTR replace the Knowles SPH1642HT4H in a voice-controlled smart home sensor, and wha
The MP34DT06JTR can replace the Knowles SPH1642HT4H (-26dB sensitivity, PDM output) in smart home sensors, but challenges exist. Both share similar sensitivity and digital PDM interfaces, but the SPH1642HT4H has a slightly extended frequency range (up to 12 kHz). The MP34DT06JTR’s 10 kHz limit may reduce high-frequency voice cue accuracy. Ensure the host MCU’s PDM decimation filter supports a 1.536 MHz clock (64x oversampling for 24kHz audio). Also, verify that the top-port design of the MP34DT06JTR aligns with the acoustic aperture placement, as misalignment can attenuate signals by up to 6dB.
What reliability concerns should be addressed when using the MP34DT06JTR in outdoor or humid environ
The MP34DT06JTR is a silicon-based MEMS microphone with no IP rating, making it vulnerable to moisture and particulate ingress in outdoor applications. With MSL-3 rating (168-hour floor life), exposure to humidity during operation risks long-term corrosion or sensitivity drift. If used in semi-protected enclosures, apply conformal coating (e.g., parylene) around the PCB, but avoid sealing the top port. Include hydrophobic membranes over the aperture to prevent water intrusion while maintaining acoustic transparency. Monitor long-term performance in cyclic temperature-humidity testing, especially if operating near maximum 1.10mm height constraints that limit sealing options.
What are the clock stability requirements for the MP34DT06JTR when used in multi-microphone beamform
For multi-MP34DT06JTR beamforming arrays, clock jitter must be minimized to ensure coherent PDM sampling across devices. Each MP34DT06JTR relies on an external master clock (typically 1.536 MHz for 24kHz effective sampling). Skew greater than 5% of the clock period (~32ns) can degrade beamforming accuracy. Use a low-jitter clock buffer to drive all microphones simultaneously and match trace lengths within ±100 mils. Also, ensure power supply noise is below 50mVpp on the 1.8V rail, as the MP34DT06JTR lacks internal PLL and is sensitive to Vdd fluctuations that modulate clock timing and increase phase error in array processing.
What are the key design-in risks when integrating the MP34DT06JTR into a compact PCB layout with hig
When integrating the MP34DT06JTR in high-density PCBs, designers must guard against crosstalk and ground bounce due to its digital PDM output. The microphone's 650 µA supply current is low, but fast PDM edge transitions can couple noise into adjacent analog or RF traces. To mitigate, maintain a solid ground plane under the MP34DT06JTR, keep trace lengths short, and avoid routing high-speed signals beneath it. Also, ensure the 3.0mm x 4.0mm footprint includes adequate pad extensions for reworkability, especially given its MSL-3 moisture sensitivity requiring proper storage and controlled reflow profiles during assembly.
How does the MP34DT06JTR compare to the Infineon IM69D130 in terms of SNR and system-level power tra
Compared to the Infineon IM69D130 (SNR: 73dB), the MP34DT06JTR offers a lower 64dB SNR, which may impact audio clarity in quiet environments. However, the MP34DT06JTR draws only 650 µA at 1.8V, making it more suitable for ultra-low-power voice recorders where battery life is critical. The IM69D130, while higher performing, consumes ~1.2 mA. For applications like IoT sensors or wearables where moderate audio quality suffices, the MP34DT06JTR provides a better balance of small 3.0mm x 4.0mm footprint, omnidirectional response, and power efficiency, though designers should implement noise-gating firmware to compensate for lower SNR.
Can the MP34DT06JTR replace the Knowles SPH1642HT4H in a voice-controlled smart home sensor, and wha
The MP34DT06JTR can replace the Knowles SPH1642HT4H (-26dB sensitivity, PDM output) in smart home sensors, but challenges exist. Both share similar sensitivity and digital PDM interfaces, but the SPH1642HT4H has a slightly extended frequency range (up to 12 kHz). The MP34DT06JTR’s 10 kHz limit may reduce high-frequency voice cue accuracy. Ensure the host MCU’s PDM decimation filter supports a 1.536 MHz clock (64x oversampling for 24kHz audio). Also, verify that the top-port design of the MP34DT06JTR aligns with the acoustic aperture placement, as misalignment can attenuate signals by up to 6dB.
What reliability concerns should be addressed when using the MP34DT06JTR in outdoor or humid environ
The MP34DT06JTR is a silicon-based MEMS microphone with no IP rating, making it vulnerable to moisture and particulate ingress in outdoor applications. With MSL-3 rating (168-hour floor life), exposure to humidity during operation risks long-term corrosion or sensitivity drift. If used in semi-protected enclosures, apply conformal coating (e.g., parylene) around the PCB, but avoid sealing the top port. Include hydrophobic membranes over the aperture to prevent water intrusion while maintaining acoustic transparency. Monitor long-term performance in cyclic temperature-humidity testing, especially if operating near maximum 1.10mm height constraints that limit sealing options.
What are the clock stability requirements for the MP34DT06JTR when used in multi-microphone beamform
For multi-MP34DT06JTR beamforming arrays, clock jitter must be minimized to ensure coherent PDM sampling across devices. Each MP34DT06JTR relies on an external master clock (typically 1.536 MHz for 24kHz effective sampling). Skew greater than 5% of the clock period (~32ns) can degrade beamforming accuracy. Use a low-jitter clock buffer to drive all microphones simultaneously and match trace lengths within ±100 mils. Also, ensure power supply noise is below 50mVpp on the 1.8V rail, as the MP34DT06JTR lacks internal PLL and is sensitive to Vdd fluctuations that modulate clock timing and increase phase error in array processing.
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Sep 15 2026
