SPH0645LM4H-B Datasheet, PDF (1/12 Pages) Knowles Electronics – I2S Output Digital Microphone

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. 600µA
• I2S Output: Direct attach to µP
• Multi modes: standard >1MHz,
• 600uA / sleep <900kHz, 10uA
• Flat Frequency Response
• RF Shielded
• Supports Dual Microphones
• Ultra-Stable Performance
• Standard SMD Reflow
• Omnidirectional
• Zero-Height Mic™
• Packaged in SPH 3.50 x 2.65 x 0.98 mm
Typical Applications
• Small portable devices: wearables
• Set-top boxes: TV, gaming, remote controllers
• Smart home devices, Internet of Things,
Connected equipment
SPH0645LM4H-B
Microphone
Filter
I2S
Interface
No Codec
Needed
I2S
Application
Processor
knowles.com
Datasheet SPH0645LM4H-B Rev B
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