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SPH0645LM4H-B - I2S Output Digital Microphone

Description

A block diagram of the I2S microphone is shown in Figure 7.

The microphone consists of the following blocks, the MEMS transducer, the Charge Pump(red), the Amplifier(yellow), the Sigma Delta Convertor(green), the Decimator(orange), the Low Pass Filter(turquoise),and the Tri-state Control (gray).

Features

  • High SNR of 65dB(A).
  • Low Current of typ. 600µA.
  • I2S Output: Direct attach to µP.
  • Multi modes: standard >1MHz,.
  • 600uA / sleep.

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Datasheet Details

Part number SPH0645LM4H-B
Manufacturer Knowles
File Size 1.07 MB
Description I2S Output Digital Microphone
Datasheet download datasheet SPH0645LM4H-B Datasheet

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Full PDF Text Transcription

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SPH0645LM4H-B SPH0645LM4H-B Rev B Datasheet I2S  Output Digital Microphone The SPH0645LM4H-B is a miniature, low power, bottom port microphone with an I2S digital output. The solution consists of a proven high performance SiSonic™ acoustic sensor, a serial Analog to Digital convertor, and an interface to condition the signal into an industry standard 24 bits I2S format. The I2S interface simplifies the integration in the system and allow direct interconnect to digital processors, application processors and microcontroller. Saving the need of an external audio codec, the SPH0645LM4H-B is perfectly suitable for portable applications where size and power consumption are a constraint. Product Features: • High SNR of 65dB(A) • Low Current of typ.
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