【產品特性】• Dynamic range of 105dB
- Signal to noise ratio of 69dB SNR
【產品應用】• Devices with Voice User Interface (VUI)
- TV, laptop and set top boxes
- Smart appliances
- Smart home devices
- Digital home assistants
• Active Noise Cancellation (ANC) headphones and earphones
• Conference systems
• Security systems
• Predictive maintenance system with audio pattern detection
【文字介紹】IM69D130 is a high dynamic range, matched and low latency PDM output digital MEMS microphone. Infineon's proven dual back plate MEMS technology achieves an outstanding signal-to-noise ratio of 69dB(A) in combination with an acoustic overload point of 130dBSPL. Additionally the unique capability of sensing a fully differential signal results in an ultra-low total harmonic distortion level of 1% up to a sound pressure level of 128dBSPL.
The digital ASIC is equipped with an ultra low noise preamplifier and a highest performance sigma delta ADC. For best energy efficiency several power optimized modes are implemented which can be selected by switching the clock frequency. To support highest system precision the group delay is minimized to 6μs at1kHz. Infineon’s high performance microphones are sensitivity (± 1dB) and phase (± 2°) matched to support even tightest beamforming requirements.