The official website - Shenzhen Mingjiada Electronic Co., LTD
What is a MEMS microphone?
A MEMS microphone is an electroacoustic transducer that integrates a sensor (MEMS) and an application-specific integrated circuit (ASIC) into a single package.
The sensor converts the incoming variable sound pressure into a capacitance variation, which is then transformed into an analog or digital output by the ASIC. Sound waves enter the microphone through the sound inlet at the top or bottom of the package, which is where the term "top punch hole" or "bottom punch hole" comes from.
MEMS microphones are suitable for audio applications that require small size, high sound quality, high reliability and high availability.
STMicroelectronics' MEMS microphone application
ST MEMS microphones can be applied in many fields, including personal electronic products, industry, automobiles, peripherals, and calculators.
ST's acoustic overload point (AOP) and signal-to-noise ratio (SNR) make STMicroelectronics' MEMS microphones suitable for applications that require an ultra-high dynamic range.
The sensitivity matching is extremely precise, capable of optimizing beamforming, sound source localization, and noise cancellation algorithms for multi-microphone arrays. These are all key elements in voice-controlled applications such as smart homes and smart speakers.
The flat frequency response and high performance support hands-free phones, emergency calls, noise cancellation, and in-vehicle communication and other automotive applications.
STMicroelectronics' low-power products expand the autonomy of battery-powered applications.
The MEMS microphone product series that Mingjiada focuses on supplying
1. Bottom-hole device
The bottom-hole device adopts a 3.5x2.65x0.98mm metal package, enhancing the robustness and reliability of the product. The substrate is coated with a capacitive layer to enhance its resistance to radio frequency interference.
2. Top perforated device
The top perforated device is packaged in 3x4x1mm plastic, and a dedicated grounding ring is set around the perforation to enhance the anti-static performance. The MEMS is directly located below the opening to enhance acoustic performance.
The main advantages of ST MEMS microphones:
Omnidirectional
High performance
Several performance modes
Low power consumption
Sensitivity matching
High impact resistance and heat resistance
Small package
Mingjiada's supply service guarantee
Unlike ordinary component distributors, Mingjiada has built a technology-oriented supply chain ecosystem:
Genuine product guarantee: All ST microphones are provided with original factory traceable batch numbers to eliminate the risks of refurbishment and counterfeit products.
Agile response: Shenzhen bonded warehouse always keeps a million-level inventory. Small-batch samples can be dispatched within 24 hours, and million-level orders can be delivered within 72 hours.
Flexible procurement strategy: Supports single-piece minimum order splitting supply and mass production guarantee. The VMI (Supplier Managed Inventory) model reduces customers' warehousing costs. The price for orders of 100,000 pieces is 12% lower than the market price.
Mingjiada Electronics, with its technology supply chain as the fulcrum, is promoting the ST MEMS microphone to upgrade from a "standard component" in consumer electronics to a "sensory organ" in Industry 4.0. When machines learn to listen, the silent world of data will eventually echo.
Official website real-time inventory: www.mjdic.com
