IM69D130 Datasheet | Infineon

Description The IM69D130 is designed for applications where low self-noise (high SNR), wide dynamic range, low distortions and a high acoustic overload point is required. Infineon's Dual Backplate MEMS technology is based on a miniaturized symmetrical microphone design, similar as utilized in studio condenser microphones, and results in high linearity of the output signal within a dynamic range of 105d B. The microphone distortion does not exceed 1% even at sound pressure levels of 128d BSPL. The flat frequency response ( 28Hz low-frequency roll-off) and tight manufacturing tolerance result in close phase matching of the microphones, which is important for multi-microphone (array) applications. With its low equivalent noise floor of 25d BSPL (SNR 69d B(A)) the microphone is no longer the limiting factor in the audio signal chain and enables higher performance of voice recognition algorithms. 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 current consumption requirements. Each IM69D130 microphone is calibrated with an advanced Infineon calibration algorithm, resulting in small sensitivity tolerances (± 1d B). The phase response is tightly matched (± 2°) between microphones, in order to support beamforming applications. Features - Dynamic range of 105d B - Signal to noise ratio of 69d B(A) SNR - <1% total harmonic distortions up to 128d BSPL - Acoustic overload point at 130d BSPL - Sensitivity (± 1d B) and phase (± 2° @1k Hz) matched - Very fast analog to digital conversion speed (6µs latency @1k Hz - Power optimized modes determined by PDM clock frequency - Package dimensions: 4mm x 3mm x 1.2mm - PDM output - Omnidirectional pickup pattern - Flat frequency response with low frequency roll off at 28Hz Typical applications - Devices with Voice User Interface (VUI) - High quality audio capturing - Smart speakers - Conference systems - Home...