MEMS (Micro-Electro-Mechanical Systems) microphones are advanced miniature devices essential in mobile, ear, IoT, and automotive applications. As industry leaders, we offer microphones that feature ultra-compact sizes, low profiles, and various mounting options to suit diverse design requirements. Our microphones deliver high-quality audio with increased output capacities and digital solutions that minimize analog noise.
| Product status | Active |
|---|---|
| Diameter / length [mm] | 3.5 |
| Width [mm] | 2.65 |
| Thickness[mm] | 0.98 |
| Port location | Bottom |
| Directivity | Omnidirectional |
| Output format | Digital I2S |
| Sensitivity @ 1kHz [dBV re. 1V/Pa] or dBFs | -26 |
| Sensitivity Tolerance[± dB] | 1 |
| SNR [dB] | 65 |
| AOP [dB] | 120 |
| Impedance [Ohm] | NA |
The SPH0645LM4H-B is a miniature, low power, bottom port microphone with an I2S digital output. The solution consists of a proven high performance SiSonic™ acoustic sensor, a serial Analog to Digital convertor, and an interface to condition the signal into an industry standard 24-bit I2S format. The I2S interface simplifies the integration in the system and allow direct interconnect to digital processors, application processors and microcontrollerss. Saving the need of an external audio codec, the SPH0645LM4H-B is perfectly suitable for portable applications where size and power consumption are a constraint.
| Product status | Active |
|---|---|
| Diameter / length [mm] | 3.5 |
| Width [mm] | 2.65 |
| Thickness[mm] | 0.98 |
| Port location | Bottom |
| Directivity | Omnidirectional |
| Output format | Digital I2S |
| Sensitivity @ 1kHz [dBV re. 1V/Pa] or dBFs | -26 |
| Sensitivity Tolerance[± dB] | 1 |
| SNR [dB] | 65 |
| AOP [dB] | 120 |
| Impedance [Ohm] | NA |
The SPH0645LM4H-B is a miniature, low power, bottom port microphone with an I2S digital output. The solution consists of a proven high performance SiSonic™ acoustic sensor, a serial Analog to Digital convertor, and an interface to condition the signal into an industry standard 24-bit I2S format. The I2S interface simplifies the integration in the system and allow direct interconnect to digital processors, application processors and microcontrollerss. Saving the need of an external audio codec, the SPH0645LM4H-B is perfectly suitable for portable applications where size and power consumption are a constraint.
Knowles is the originator of balanced armature technology which they apply to their receiver, specialty transducers and hearing aid products. Knowles is also a market-leading manufacturer of MEMS microphones, electret microphones, voice processors and acoustical component accessories.
| Product status | Active |
|---|---|
| Diameter / length [mm] | 3.5 |
| Width [mm] | 2.65 |
| Thickness[mm] | 0.98 |
| Port location | Bottom |
| Directivity | Omnidirectional |
| Output format | Digital I2S |
| Sensitivity @ 1kHz [dBV re. 1V/Pa] or dBFs | -26 |
| Sensitivity Tolerance[± dB] | 1 |
| SNR [dB] | 65 |
| AOP [dB] | 120 |
| Impedance [Ohm] | NA |
The SPH0645LM4H-B is a miniature, low power, bottom port microphone with an I2S digital output. The solution consists of a proven high performance SiSonic™ acoustic sensor, a serial Analog to Digital convertor, and an interface to condition the signal into an industry standard 24-bit I2S format. The I2S interface simplifies the integration in the system and allow direct interconnect to digital processors, application processors and microcontrollerss. Saving the need of an external audio codec, the SPH0645LM4H-B is perfectly suitable for portable applications where size and power consumption are a constraint.
Knowles is the originator of balanced armature technology which they apply to their receiver, specialty transducers and hearing aid products. Knowles is also a market-leading manufacturer of MEMS microphones, electret microphones, voice processors and acoustical component accessories.
Headquarters
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2, Allée des Cerisiers
F – 94042 Créteil FRANCE
Tel EU : +33 1 48 92 90 02
Tel NA : +1 (919) 481 6896
SELTECH is an international solution provider with deep expertise in acoustics and sensors. We offer innovative solutions to our customers’ challenges, from design to production.
