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  • MEMS

MD-LRA371-H20N

The MD-LRA371-H20N 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

  • 3.0x2.3x1.0mm Bottom Port

  • 1-bit PDM Output

  • Narrow Sensitivity of +/-1dBFS

  • High SNR

  • Multi Mode(Sleep, Low power, Normal)

  • Compatible with Standard SMD Reflow Technology

  • RoHS Compliance & Halogen Free

Performance Parameters

Symbol
Dtion
Min
Nom.
MaxUnit
FCLKClock Frequency1.22.43.3MHz
IDDSupply Current1
9801100uA
IDD in AVDD
860
uA
IDD in DVDD
120
uA
SSensitivity3,94dBSPL@1KHz-38-37-36dBFS2
ΔSSensitivity <0.5<0.5<0.5dBFS
SNR20-5KHz Bandwidth, A-Weighted
67
dB(A)
20-8KHz Bandwidth, A-Weighted
66
dB(A)
20-20KHz Bandwidth, A-weighted6365
dB(A)
THD94dB SPL @1KHz

0.5%
125dB SPL@1KHz

1%
AOP10%THD@1KHz
130
dBSPL
PSR+N

Measured with 217Hz,100mVpp square wave



-90dBFS
PSRRMeasured with 1KHz,200mVpp sinewave60

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


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