SPH18C3LM4H-1 HIGH SNR, HIGH AOP ANALOG BOTTOM PORT SISONIC™ MICROPHONE

PublishTime：2022-02-21

●The SPH18C3LM4H-1 is a high Signal-to-Noise Ratio (SNR), high Acoustic Overload Point (AOP), bottom port silicon microphone. Using Knowles’ proven high performance SiSonic™ MEMS technology, the SPH18C3LM4H-1 consists of an acoustic sensor, a low noise input buffer, and a differential output amplifier supporting optional single ended mode. This microphone’s high SNR enables enhanced consumer experience with Transparency Mode & Active Noise Cancellation on Ear Products. Its high SNR & AOP provide high dynamic range for Mobile & variety of IoT products in a small form factor. The microphone’s low phase distortion lends to superior algorithm performance. Its differential mode configuration improves noise immunity to power supply variations, allowing extension of microphone PCB traces.
●PRODUCT FEATURES
■Differential/Single-Ended Output
■Low Distortion /High AOP
■High SNR
■Flat Frequency Response
■Low Current
■Sensitivity Matching
■Bottom Port
■Ultra-Stable Performance
■Omnidirectional
■Standard SMD Reflow
■LGA Package

Brand of Product：	Knowles
Part#：	SPH18C3LM4H-1 More Part#
Product Category：	HIGH SNR, HIGH AOP ANALOG BOTTOM PORT SISONIC™ MICROPHONE 、 high Signal-to-Noise Ratio (SNR), high Acoustic Overload Point (AOP), bottom port silicon microphone More
Application：	[ Transparency Mode OTE & TWS ][ ANC Mode OTE & TWS ][ Far field Voice Speakerphone ][ Mobile ] More
Data Type：	Datasheet More
Safety & Environment Standards：	More
Operating Temperature：	Please see the document for details
Qualification Grade：	More
Qualification Approval：	More
Package：	LGA
Language：	English Chinese Chinese and English Japanese
Date of Creation：	11/17/20
Version Number：	REV A
Data Encoding：
Data Size：	2.4 MB

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