Syntiant SPM0192LR5H-1 SiSonic™ MEMS Microphone
Syntiant SPM0192LR5H-1 SiSonic™ MEMS Microphone is a high Signal-to-Noise Ratio (SNR), high Acoustic Overload Point (AOP), bottom port silicon microphone. This microphone consists of an acoustic sensor, a low-noise input buffer, and a differential output amplifier supporting optional single-ended mode. The SPM0192LR5H-1 microphone's low phase distortion lends to superior algorithm performance and its differential mode configuration improves noise immunity to power supply variations.
The SPM0192LR5H-1 microphone's high SNR enables far-field voice pick-up for IoT applications and its high AOP provides a large dynamic range for barge-in applications. Typical applications include voice-enabled smart speakers/hubs (IoT), voice-enabled home/industrial accessories (thermostats, light bulbs, remote controls, TVs), speakerphones, and Active Noise Cancellation (ANC) headsets.
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
Applications
- Voice-enabled smart speaker/hub (IoT)
- Voice-enabled home/industrial accessories (thermostat, light bulb, remote control, and TV)
- Speakerphones
- Active Noise Cancellation (ANC) headsets
- Digital action/still cameras
- Portable music recorders
Specifications
- 2.3V to 3.6V supply voltage range
- Supply current:
- 235μA (Vdd=3.6V)
- 225μA (Vdd=2.75V)
- Sensitivity:
- -41.7dBV/Pa to -39.7dBV/Pa (94dB SPL at 1kHz single-ended)
- -35.7dBV/Pa to -33.7dBV/Pa (94dB SPL at 1kHz differential)
- Signal-to-noise ratio:
- 70.5dBV/Pa (94dB SPL at 1kHz A-weighted single-ended mode)
- 70.5dBV/Pa (94dB SPL at 1kHz A-weighted differential mode)
- Near-ultrasonic SNR:
- 83.9dB ((94dB SPL at 19kHz, BW=18.5kHz to 20kHz, SE)
- 83.9dB ((94dB SPL at 19kHz, BW=18.5kHz to 20kHz, D)
- Total Harmonic Distortion (THD):
- 0.1% (94dB SPL at 1kHz)
- 0.25% (115dB SPL at 1kHz)
- Power supply rejection ratio:
- 97dB (200mVpp sinewave at 1kHz, single-ended mode)
- 94dB (200mVpp sinewave at 1kHz, differential mode)
- 0.59V to 0.79V DC output voltage range
- 380Ω maximum output impedance
- ±0.25dB sensitivity drop
- 30ms maximum startup time
Differential Mode Application Circuit
Mechanical Diagram
