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PDM mini Unit is a digital MEMS silicon-based microphone that utilizes Pulse-Density Modulation (PDM) signaling. This microphone is known for its high signal-to-noise ratio, high sensitivity, low power consumption, resistance to RF interference, and smooth frequency response. It automatically switches microphone states (power-off/active/sleep) based on the clock frequency, making it suitable for a wide range of applications in wearable devices and smart digital devices for audio data capture.
One of the key advantages of the PDM mini Unit is its digital output format. Instead of providing analog signals, it utilizes the PDM technique, which converts the audio signal into a digital bitstream based on the density of pulses. This digital output makes it convenient for integration with digital signal processors (DSPs) or microcontrollers, as it eliminates the need for additional analog-to-digital conversion.
PDM mini Unit offers high performance in terms of capturing audio with excellent fidelity. Its high signal-to-noise ratio ensures clear and accurate audio recordings, while its high sensitivity allows for capturing even subtle sounds. The low power consumption makes it suitable for battery-powered devices, extending their operational life. Additionally, its resistance to RF interference ensures reliable audio capture in the presence of electromagnetic signals.
This microphone is well-suited for applications where compact size, low power consumption, and high-quality audio capture are essential. It finds use in various devices such as wearable technology, smartwatches, smartphones, tablets, voice-controlled devices, and other smart digital devices that require audio data collection and analysis.
I2S PORT, encoding output (CLK/DAT)
High sensitivity, high signal to noise ratio
Low power consumption
Anti-radio frequency interference
Compatible with LEGO
Digital microphone | SPM1423 |
Sensitivity | 94dB SPL@1KHz Nom.:-22dBFS |
Signal to Noise Ratio | 94dB SPL@1KHz,A-weighted Nom.:61.4dB |
Total Harmonic Distortion | 100dB SPL@1KHz Nom.:1% |
Working Current | 600µA |
Net Weight | 4g |
Gross Weight | 8g |
Product Size | 24*24*13mm |
Package Size | 35*36*18mm |
Case material | Plastic(PC) |
* Certain EU Countries are not included in our EU Zone definition: United Kingdom (excluding Ireland), Switzerland, Liechtenstein, Vatican City, Albania, Belarus, Norway, Ukraine, and Iceland. For above countries the International Shipping Rule applies.
Distributors are not eligible for free shipping.
We offer competitively priced shipping services via Deutsche Post, DHL, YunExpress, and 4PX, with tracking to ensure your products are delivered safely and promptly.
Faster shipping times to Western and Eastern Europe apply only to products marked as "Product Inventory Location: Germany" on the product page. If the product is not labeled with this location, it will ship from our Chinese warehouse following the corresponding shipping schedule above.
Whether shipped from Germany or China, we cover all import duties and taxes, ensuring that you receive your package without any additional costs or hassles with customs.
Please verify the inventory location on the product page before placing your order to confirm delivery timeframes. For any questions or further assistance, feel free to contact us!
Our products are stored in both our Shenzhen and German warehouses to provide more flexible logistics solutions tailored to different regions and customer needs. On each product's description page, we indicate the specific warehouse location to help you better plan your purchase and delivery schedule.
For products stored in our warehouse in Germany, we use either Deutsche Post or DHL for shipping, depending on the size of the package. Logistics within Germany are very efficient, with an estimated delivery time of 2-4 business days, ensuring you receive your order quickly and conveniently.
Products shipped from our Chinese warehouse are handled by YunExpress. Given the complexities of international shipping, the estimated delivery time for these packages is around 10 business days, though this may vary slightly due to customs processes or other uncontrollable factors.
To ensure that your order is delivered within your desired timeframe, we recommend reviewing the warehouse information provided on the product pages before placing your order and selecting the appropriate shipping option. If you have any questions or need further assistance, please don't hesitate to contact our customer support team—we are here to help you!
Please note that it may take 1-2 working days for Deutsche Post, DHL, YunExpress, and 4PX services to update the status from 'Shipped' to 'Traceable'.
Effective Date: March 25, 2024
OpenELAB guarantees to provide accurate descriptions and high-quality products. If you encounter any problems with any executed purchase order, please notify OpenELAB within 60 days from the date of shipment.Receive our latest updates about our products & promotions.
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