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] | 1 |
| Port location | Bottom |
| Directivity | Omnidirectional |
| Output format | Analog_x000D_ Differential |
| Sensitivity @ 1kHz [dBV re. 1V/Pa] or dBFs | -38 |
| Sensitivity Tolerance[± dB] | 1 |
| SNR [dB] | 68.5 |
| AOP [dB] | 134 |
| Impedance [Ohm] | 120 |
The SPH21C3LR5H-1 is a high Signal-to-Noise Ratio (SNR), high Acoustic Overload Point (AOP), bottom port silicon microphone. Using Knowles' proven high performance SiSonicTM MEMS technology, the SPH21C3LR5H-1 consists of an acoustic sensor, a low noise input buffer, and a differential output amplifier. This microphone's high SNR enables enhanced consumer experience with Transparency Mode & Active Noise Cancellation on Ear Products. Its high SNR & AOP provide high dynamic range for Mobile & variety of loT products in a small form factor. The microphone's low phase distortion lends to superior algorithm performance. Its differential mode configuration improves noise immunity to power supply variations, allowing extension of microphone PCB traces.
| Product status | Active |
|---|---|
| Diameter / length [mm] | 3.5 |
| Width [mm] | 2.65 |
| Thickness[mm] | 1 |
| Port location | Bottom |
| Directivity | Omnidirectional |
| Output format | Analog_x000D_ Differential |
| Sensitivity @ 1kHz [dBV re. 1V/Pa] or dBFs | -38 |
| Sensitivity Tolerance[± dB] | 1 |
| SNR [dB] | 68.5 |
| AOP [dB] | 134 |
| Impedance [Ohm] | 120 |
The SPH21C3LR5H-1 is a high Signal-to-Noise Ratio (SNR), high Acoustic Overload Point (AOP), bottom port silicon microphone. Using Knowles' proven high performance SiSonicTM MEMS technology, the SPH21C3LR5H-1 consists of an acoustic sensor, a low noise input buffer, and a differential output amplifier. This microphone's high SNR enables enhanced consumer experience with Transparency Mode & Active Noise Cancellation on Ear Products. Its high SNR & AOP provide high dynamic range for Mobile & variety of loT products in a small form factor. The microphone's low phase distortion lends to superior algorithm performance. Its differential mode configuration improves noise immunity to power supply variations, allowing extension of microphone PCB traces.
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] | 1 |
| Port location | Bottom |
| Directivity | Omnidirectional |
| Output format | Analog_x000D_ Differential |
| Sensitivity @ 1kHz [dBV re. 1V/Pa] or dBFs | -38 |
| Sensitivity Tolerance[± dB] | 1 |
| SNR [dB] | 68.5 |
| AOP [dB] | 134 |
| Impedance [Ohm] | 120 |
The SPH21C3LR5H-1 is a high Signal-to-Noise Ratio (SNR), high Acoustic Overload Point (AOP), bottom port silicon microphone. Using Knowles' proven high performance SiSonicTM MEMS technology, the SPH21C3LR5H-1 consists of an acoustic sensor, a low noise input buffer, and a differential output amplifier. This microphone's high SNR enables enhanced consumer experience with Transparency Mode & Active Noise Cancellation on Ear Products. Its high SNR & AOP provide high dynamic range for Mobile & variety of loT products in a small form factor. The microphone's low phase distortion lends to superior algorithm performance. Its differential mode configuration improves noise immunity to power supply variations, allowing extension of microphone PCB traces.
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
SAS SELTECH
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.
