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Product Detailed Parameters
- Description：MIC MEMS ANALOG OMNI -44DB
- Series：SiSonic™ SPH
- Mfr：Syntiant
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：MEMS (Silicon)
- Output Type：Analog
- Direction：Omnidirectional
- Frequency Range：7 Hz ~ 36 kHz
- Sensitivity：-44dB ±0.5dB SPL
- S/N Ratio：67dB
- Impedance：-
- Voltage Range：2.3 V ~ 3.6 V
- Current - Supply：250 µA
- Port Location：Bottom
- Ratings：-
- Termination：Solder Pads
- Size / Dimension：0.138" L x 0.104" W (3.50mm x 2.65mm)
- Height (Max)：0.050" (1.26mm)
- Shape：Rectangular
- Grade：-
- Qualification：-
- Voltage - Rated：2.75 V
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Overview
The SPH1878LR5H-C is a Sisonic MEMS microphone manufactured by Syntiant. It features an analog output and bottom port configuration. Key electrical parameters include a signal-to-noise ratio of 67 dB, a sound pressure level capability of 134 dB SPL, and a sensitivity of -44 +/- 0.5 dB (SE) / -38 +/- 0.5 dB (diff.) dBV. The device operates at 2.7 V with a power supply rejection ratio of 85 dB PSRR and has a frequency response starting at 7 Hz.
Feature Summary
- Integrates Sisonic technology for enhanced acoustic performance
- Provides analog audio output signals
- Utilizes a bottom-port acoustic design
Applications
- Voice-enabled consumer electronics
- Smart home devices requiring high dynamic range
- Audio recording systems needing low noise floors
Procurement Notes
Verify the specific suffix 'C' against official Syntiant documentation to confirm exact manufacturing revisions or regional compliance variations. Ensure compatibility with existing analog front-end circuits given the 2.7 V operating voltage. Confirm package handling requirements for surface-mount assembly processes.
Selection Notes
Select this component when high signal-to-noise ratio and wide dynamic range are critical for voice capture accuracy. The analog output interface requires appropriate amplification and filtering stages in the system design. Consider the bottom-port orientation for optimal acoustic coupling in constrained enclosures.
Part Context
This part belongs to the Syntiant Sisonic MEMS microphone family, which focuses on high-fidelity audio capture. It complements other models like the SPH0655LM4H-1 but differs in output type and voltage specifications. The product line emphasizes advanced noise reduction and acoustic overload protection for modern voice interfaces.
Replacement Considerations
Publicly confirmed substitute part numbers for the SPH1878LR5H-C are not available in the provided source material. Verify functional equivalence with other Syntiant analog bottom-port microphones if cross-referencing is required.
