MP23DB02HP - MEMS Digital Microphone, PDM Output | STMicroelectronics
MPN: MP23DB02HP β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.85 | $1.85 |
| 10 | $1.66 | $16.60 |
| 100 | $1.48 | $148.00 |
| 500 | $1.33 | $665.00 |
| 1,000 | $1.2 | $1,200.00 |
Drop-in alternatives for MP23DB02HP β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
MP23DB01HP
β Drop-Inπ Reference alternative (not in catalog)
MP23DB02HPTR
β Drop-Inπ Reference alternative (not in catalog)
MP23DB02HP Maximum Ratings & Electrical Characteristics
| Output Type | Digital PDM |
| Signal-to-Noise Ratio (SNR) | 64 dB |
| Sensitivity | -26 dBFS |
| Supply Voltage | 1.6 V to 3.6 V |
| Current Consumption | 0.9 mA |
| Frequency Response | 20 Hz to 20 kHz |
| PDM Clock Frequency | 1.2 MHz to 3.6 MHz |
| Power Supply Rejection Ratio (PSRR) | 80 dB |
| Package | 4x3x1.08 mm MEMS |
| Port Type | Bottom port |
| Operating Temperature | -40C to +85C |
| AEC-Q100 | Qualified |
| RoHS | Compliant |
| REACH | Compliant |
| Mounting Type | Surface Mount |
MP23DB02HP Pin Configuration
| Pin 1 | GND β Ground |
| Pin 2 | L/R β Channel select (left/right) |
| Pin 3 | VDD β Power supply |
| Pin 4 | CLK β PDM clock input |
| Pin 5 | DATA β PDM data output |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
MP23DB02HP is suitable for 6 applications: Smartphones and Tablets, TWS Earbuds and Hearables, Smart Speakers and Voice Assistants, Automotive In-Cabin Sensing, IoT and Smart Home Devices, Hearing Aids and Assistive Listening Devices.
Smartphones and Tablets
The MP23DB02HP is used in smartphones and tablets for voice calls, voice assistants, and video recording. Its PDM output simplifies interfacing with application processors, and the low power consumption extends battery life. The 64 dB SNR ensures clear voice capture even in noisy environments, while the small package allows integration into thin devices.
Recommended
TWS Earbuds and Hearables
In TWS earbuds, the MP23DB02HP captures voice for calls and voice assistants. Its ultra-low power consumption (0.9 mA) is critical for battery life, and the bottom port allows for a sealed acoustic design. The PDM output reduces the number of wires needed, simplifying the flex PCB design. The AEC-Q100 qualification ensures reliability in demanding environments.
Recommended
Smart Speakers and Voice Assistants
The MP23DB02HP is ideal for smart speakers, where multiple microphones are used for far-field voice pickup and beamforming. Its high SNR and PSRR ensure consistent performance, and the PDM output allows easy synchronization of multiple microphones. The small size enables dense microphone arrays in compact enclosures.
Recommended
Automotive In-Cabin Sensing
The MP23DB02HP is AEC-Q100 qualified, making it suitable for automotive applications such as hands-free calling, voice control, and road noise cancellation. Its wide temperature range (-40C to +85C) and robust construction ensure reliable operation in harsh automotive environments. The PDM output interfaces directly with automotive audio DSPs.
Recommended
IoT and Smart Home Devices
In IoT devices like smart thermostats and security cameras, the MP23DB02HP provides voice control and audio monitoring. Its low power consumption is essential for battery-powered sensors, and the digital output simplifies integration with low-power MCUs. The small package allows for compact product designs.
Recommended
Hearing Aids and Assistive Listening Devices
The MP23DB02HP is suitable for hearing aids due to its low power consumption, small size, and digital output. The PDM interface allows direct connection to a DSP, reducing component count. The high SNR ensures clear audio for users, and the bottom port enables a compact acoustic design.
Recommended
Recommended Products Summary
Engineering reference data for MP23DB02HP β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MP23DB01HP | SPH0645LM4H | ICS-43434 |
|---|---|---|---|---|
| Package | 4x3x1.08 mm MEMS | 4x3x1.08 mm MEMS - same | 3.5x2.65x0.98 mm MEMS - different | 3.5x2.65x0.98 mm MEMS - different |
| Brand | STMicroelectronics | STMicroelectronics | Knowles | TDK InvenSense |
| Output Interface | PDM | PDM | PDM | I2S |
| SNR | 64 dB | 63 dB | 61 dB | 65 dB |
| Sensitivity | -26 dBFS | -26 dBFS | -26 dBFS | -26 dBFS |
| Supply Voltage | 1.6V to 3.6V | 1.6V to 3.6V | 1.6V to 3.6V | 1.6V to 3.6V |
| Current Consumption | 0.9 mA | 0.9 mA | 0.6 mA | 1.4 mA |
| AEC-Q100 | Qualified | Qualified | Not qualified | Not qualified |
Key Differentiators
- AEC-Q100 qualified for automotive use (vs SPH0645LM4H)
- Higher SNR than MP23DB01HP (vs MP23DB01HP)
- Lower current consumption than ICS-43434 (vs ICS-43434)
Design Notes
Place a 100 nF decoupling capacitor as close as possible to the VDD pin. Use a solid ground plane under the microphone to minimize noise. The acoustic port should be aligned with a hole in the PCB, and a mesh or foam should be used to protect against dust and moisture.
Keep the PDM clock and data traces short and shielded to avoid crosstalk. Route the clock away from the data line to prevent interference. If multiple microphones are used, ensure the clock signal is distributed with matched trace lengths to maintain synchronization.
Do not exceed the maximum supply voltage of 3.6V. Ensure the PDM clock is within the specified range (1.2 MHz to 3.6 MHz) to avoid data corruption. The L/R pin must be tied to VDD or GND to select the correct channel; floating this pin can cause undefined behavior.
Compliance Information
RoHS and REACH compliant per STMicroelectronics datasheet. AEC-Q100 qualified for automotive applications.
