High Performance Digital MEMS Microphone Interfaces to Blackfin DSP

By Analog Devices
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The circuit shown in Figure 1 allows up to two digital MEMS microphones to be interfaced to a DSP on a single data line. The ADMP441 consists of a MEMS microphone element and an I2S output. This allows stereo microphones to be used in an audio system without the need for a codec between the microphones and the processor. Analog Devices, Inc., MEMS microphones have a high signal-to-noise ratio (SNR) and a flat wideband frequency response, making them an excellent choice for high performance, low power applications. Read More

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