In the rapidly evolving audio technology market, the demand for high-performance MEMS microphones with superior signal-to-noise ratio (SNR) and omnidirectional sensitivity is surging. The SPM0687LR5H-1-6 from Knowles stands out as a top-tier solution, combining 70 dBA SNR, wide frequency response (10 Hz–10 kHz), and robust LGA-6 packaging for compact designs. Ideal for IoT, smart devices, and industrial applications, this microphone ensures crystal-clear audio capture even in noisy environments. Read on to explore its technical advantages, selection criteria, and real-world use cases.
Product Overview
The SPM0687LR5H-1-6 is a high-performance analog MEMS microphone from Knowles' WINFREY series, designed for applications requiring precision and reliability.
Core Parameters
| Parameter | Value | Source |
|---|---|---|
| Sensitivity | -34.7 dBV/Pa, -40 dBV/Pa | Knowles Datasheet |
| SNR | 69.5 dBA, 70 dBA | |
| Impedance | 300 Ohms | |
| Frequency Range | 10 Hz–10 kHz | |
| Supply Voltage | 2.3 V–3.6 V | |
| Current Consumption | 365 µA | |
| Operating Temperature | -30°C to +100°C | |
| Dimensions | 4.72 mm × 3.76 mm × 1.15 mm | |
| Port Type | Bottom | |
| Directionality | Omnidirectional |
Selection Guide
When to Choose SPM0687LR5H-1-6:
High SNR Needs: Ideal for voice recognition and noise-sensitive environments.
Compact Designs: LGA-6 package saves PCB space.
Wide Temperature Range: Suitable for industrial applications (-30°C to +100°C).
Comparison with Similar Models:
| Model | SNR (dBA) | Sensitivity (dBV/Pa) | Key Difference |
|---|---|---|---|
| SPM0687LR5H-1-6 | 70 | -40 | Higher SNR, wider temp range |
| SPU0410LR5H-QB | 62 | -38 | Lower cost, reduced performance |
Application Cases
Smart Speakers: Leverages omnidirectional capture for 360° voice commands.
Industrial Sensors: Withstands extreme temperatures in factory automation.
Medical Devices: High SNR ensures accurate audio feedback in hearing aids.
Market Analysis & Future Trends
According to MarketsandMarkets, the MEMS microphone market is projected to grow at a 9.8% CAGR (2023–2028), driven by demand for AI-powered voice interfaces. The SPM0687LR5H-1-6’s high AOP (130 dB SPL) positions it well for next-gen applications like AR/VR and automotive voice systems.
FAQs
Q: What is the advantage of a differential output?
A: Reduces noise interference in long PCB traces.Q: Can this microphone operate at 3.3 V?
A: Yes, it supports 2.3 V–3.6 V (typical 2.75 V).Q: Is it RoHS compliant?
A: Yes, per Knowles’ documentation.Q: How does bottom porting affect design?
A: Requires PCB cutout for optimal acoustic performance.Q: What’s the factory pack quantity?
A: 4,800 units per reel.
Purchase & Support
For pricing, samples, or technical queries, contact our sales team at [email protected].
Conclusion
The SPM0687LR5H-1-6 MEMS microphone delivers unmatched audio clarity and durability for modern applications. Its combination of high SNR, omnidirectional sensitivity, and industrial-grade robustness makes it a preferred choice for engineers designing cutting-edge audio systems. Stay ahead of the curve with Knowles’ proven technology.
