KNOWLES

KNOWLES – Digital MEMS microphones

Model Picture Digital Interface Dimensions (mm) Sound Port Sensitivity (dB FS) SNR (dBA) (Note1) AOP (dB SPL) Comments
SPG0660LM4H PDM 4.00 x 2.00 x 0.80 Bottom -26.0±3 63.5 120.5 dB SPL Very narrow - Note2
SPH0641LM4H-1 PDM 3.50 x 2.65 x 0.98 Bottom -26.0±1 64.3 120 dB SPL Multi-mode / High SNR
SPH0641LU4H-1 PDM 3.50 x 2.65 x 0.98 Bottom -26.0±1 64.3 120 dB SPL Multi-mode / Ultrasonic
SPH0644HM4H-1 PDM 3.50 x 2.65 x 0.85 Top -36.0±1 58.0 131 dB SPL Multi-mode
SPH0644LM4H-1 PDM 3.50 x 2.65 x 0.98 Bottom -37.0±1 65.5 132.5 dB SPL Multi-mode / High SNR
SPH1668LM4H-1 PDM 3.50 x 2.65 x 0.98 Bottom -29.0±1 65.5 122 dB SPL Multi-mode / High SNR
SPH0645LM4H I2S 3.50 x 2.65 x 0.98 Bottom -26.0±3 65.0 120 dB SPL Multi-mode / High SNR
SPK0415HM4H PDM 4.00 x 3.00 x 1.06 Top -26.0±3 61.0 122 dB SPL Multi-mode
SPK0641HT4H-1 PDM 4.00 x 3.00 x 1.00 Top -26.0±1 64.5 120 dB SPL Multi-mode / High SNR
SPK0833LM4H PDM 4.00 x 3.00 x 1.00 Bottom -26.0±3 63.0 122 dB SPL Note2
SPK0838HT4H PDM 4.00 x 3.00 x 1.00 Top -26.0±3 64.0 121 dB SPL Multi-mode / Flat freq. Response
SPK1638LM4H PDM 4.00 x 3.00 x 1.00 Bottom -26.0±3 64.5 122 dB SPL Multi-mode / High SNR
SPM0423HM4H PDM 4.72 x 3.76 x 1.25 Top -26.0±3 56.0 >115 dB SPL Note2
SPM1423HM4H PDM 4.72 x 3.76 x 1.25 Top -22.0±3 61.5 115 dB SPL Note2
SPM0437HD4H PDM 4.72 x 3.76 x 1.25 Top -26.0±3 57.5 119 dB SPL Note2
SPM1437HM4H PDM 4.72 x 3.76 x 1.25 Top -22.0±3 61.5 117dB SPL Note2