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Product Detailed Parameters
- Description：MIC MEMS DIGITAL PDM OMNI -22DB
- Series：SiSonic™ SPM
- Mfr：Syntiant
- Package：Tape & Reel (TR)
- Type：MEMS (Silicon)
- Output Type：Digital, PDM
- Direction：Omnidirectional
- Frequency Range：100 Hz ~ 10 kHz
- Sensitivity：-22dB ±3dB @ 94dB SPL
- S/N Ratio：61.5dB
- Impedance：-
- Voltage Range：1.6 V ~ 3.6 V
- Current - Supply：600 µA
- Port Location：Top
- Ratings：-
- Termination：Solder Pads
- Size / Dimension：0.186" L x 0.148" W (4.72mm x 3.76mm)
- Height (Max)：0.055" (1.40mm)
- Shape：Rectangular
- Grade：-
- Qualification：-
- Voltage - Rated：-
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Overview
The SPM1423HM4H-B is a digital PDM MEMS microphone from the SiSonic SP series, manufactured by Syntiant. It features an omnidirectional acoustic port and operates within a voltage range of 1.6 V to 3.6 V. The device delivers a sensitivity of -22 dB ±3 dB at 94 dB SPL and achieves a signal-to-noise ratio of 61.5 dB. Its frequency response spans from 100 Hz to 10 kHz, with a typical supply current of 600 µA. The component utilizes a top-ported, pad-end termination design in a rectangular package measuring 4.72 mm x 3.76 mm x 1.35 mm.
Feature Summary
- Digital PDM output interface for direct integration with audio processing units
- Omnidirectional acoustic sensing capability via top-port design
- Low power consumption suitable for battery-operated devices
Applications
- Voice recognition systems
- Smart home voice assistants
- Hands-free communication modules
Procurement Notes
Verify part status as discontinued or obsolete before procurement planning. Confirm availability through authorized distributors or secondary market channels. Ensure compatibility with existing BOM requirements due to potential end-of-life constraints. Check for valid RoHS compliance documentation if required for specific regional regulations.
Selection Notes
Select this component for applications requiring high SNR and low power digital audio input. Compare against alternative MEMS microphones based on package dimensions and pinout compatibility. Evaluate system-level power budgets against the 600 µA supply current specification. Consider the digital PDM interface requirements for the host processor.
Part Context
This microphone belongs to the SiSonic SP series, designed for always-on voice detection and processing. It represents a transition in MEMS technology towards integrated digital solutions. The product line focuses on enabling efficient voice capture for IoT and consumer electronics applications.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided source data. Consult manufacturer documentation for recommended cross-references or next-generation replacements.
