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  • MEMS

MD-HRA371-H10-4N

The MD-HRA371-H10-4N is a small package, high SNR and Multimode bottom port digital MEMS microphone with 1-bit PDM output, consists of a MEMS sensor, a low noise level amplifier, and a ∑-△ modulator.

Features

  • 3.5x2.65x0.98mm Bottom Port

  • 1-bit PDM Output

  • Narrow Sensitivity +/-1dB

  • High SNR

  • LFRO 30Hz

  • Flat Frequency Performance

  • Multi Mode(Sleep,Low power,Normal)

  • Compatible with Standard SMD Reflow Technology

  • RoHSCompliance&Halogen Free

Performance Parameters

Symbol
Dtion
Min
Nom.
MaxUnit
FCLKClock Frequency1.22.43.3MHz
IDDSupply Current1
10001100uA
SSensitivity3,94dBSPL@1KHz-38-37-36dBFS2
ΔSSensitivity<0.5dBFS
S/N20-5kHz Bandwidth, A-Weighted
70
dB(A)
20-8kHz Bandwidth, A-Weighted
69
dB(A)
20-20KHz Bandwidth, A-weighted6668
dB(A)
THD94dB SPL @1KHz
0.080.5%
124dB SPL@1KHz
1
%
AOP10%THD@1KHz
128
dBSPL
PSR

Measured with 217Hz

100mVpp squarewave


-97-80dBFS
LFROLow frequency roll off
30
Hz
Note：Frequency response, sensitivity and current consumption are tested by 100% on product line.


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