The SPH0641LU4H-1 is a miniature, high performance, low power, bottom port silicon digital microphone with a single bit PDM output. It consists of an acoustic sensor, a low noise input buffer, and a sigma-delta modulator. It supports multiple performance modes (Sleep, Low-Power, Standard, and Ultrasonic) and offers high SNR of 64.3 dB with RF shielding.
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Knowles SPH0641LU4H-1 technical specifications.
| Signal-to-Noise Ratio (SNR) | 64.3dB |
| Supply Voltage (VDD) | 1.62 - 3.6V |
| Current Consumption (Low-Power Mode) | 235µA |
| Sensitivity | -26 ±1dB FS |
| Acoustic Overload Point (10% THD) | 120dB SPL |
| Clock Frequency (Standard Mode) | 1.024 - 2.475MHz |
| Clock Frequency (Ultrasonic Mode) | 3.072 - 4.8MHz |
| Directivity | Omnidirectional |
| Frequency Range | 10 - 80,000Hz |
| RoHS | Compliant |
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