描述 Description

The IM72D128V01 is an ultra-high performance digital PDM MEMS microphone designed for applications which

require a very high SNR (low self-noise) and low distortion (high AOP) and which is also IP57 robust to dust and

water.

Best-in-class signal-to-noise ratio (SNR) of 72dB(A) enables far field and low volume audio pick-up. The flat

frequency response (20Hz low-frequency roll-off) and tight manufacturing tolerance improve performance of

multi-microphone (array) applications.

The digital microphone ASIC contains an extremely low-noise preamplifier and a high-performance sigma-delta

ADC. Different power modes can be selected in order to suit specific clock frequency and current consumption

requirements.

Each IM72D128V01 microphone is calibrated with an advanced Infineon calibration algorithm, resulting in low

sensitivity tolerances (± 1dB).

特性 Features

? Component level IP57 water and dust resistant

? Dynamic range of 106dB

? Acoustic overload point at 128dBSPL

? Signal to noise ratio of 72dB(A) SNR

? Digital PDM output

? Flat frequency response with a low frequency rolloff

at 20Hz

? Package dimensions: 4mm x 3mm x 1.2mm

? Omnidirectional pickup pattern

? Power optimized modes determined by PDM

clock frequency

Typical applications

? Active Noise Cancellation (ANC) headphones and

earphones

? Devices with Voice User Interface (VUI)

- Smart speakers

- Home automation

- IOT devices

? High quality audio capturing

- Laptops and tablets

- Conference systems

- Cameras and camcorders

? Industrial or home monitoring with audio pattern

detection