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  • MEMS

MD-HRA371-H10-3N

The MD-HRA371-H10-3N 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 of 65.5dBA

  • LFRO ＜20Hz

  • 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
9701100uA
SSensitivity3,94dBSPL@1KHz-38-37-36dBFS2
ΔSSensitivity<0.5dBFS
S/N20-8KHz Bandwidth, A-weighted63.5
65.5
dB(A)
THD94dB SPL @1KHz
0.120.5%
122dB SPL@1KHz
1
%
AOP10%THD@1KHz
131
dBSPL
PSR

Measured with 217Hz

100mVpp squarewave


-93-80dBFS
Note：Frequency response, sensitivity and current consumption are tested by 100% on product line.


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