We respect your privacy. Please consent to all cookies when you visit our website. Refer to our "Privacy Policy" for more information on how we handle personal data.

CN EN
Contact Us
  • underlay image _0038_MD-HRA371-H10-3N.igs.jpg
  • underlay image _0046_GTA2718B-3.igs.jpg

  • MEMS

MA-ERA381-H43-1A

The MA-ERA381-H43-1A is a high SNR and high AOP differential output bottom port MEMS microphone, consists of a dual back-plate MEMS sensor and a low noise level ASIC

Features

  • 3.35x2.5x0.98mm Bottom Port

  • Differential Output

  • Narrow Sensitivity +/-1dB

  • High SNR of 66dBA

  • High AOP of 137dBSPL

  • RF Shielded

  • Compatible with Standard SMD Reflow Technology

  • RoHS Compliance & Halogen Free

Performance Parameters

ParameterSymbol
ConditionMin
Nom.
MaxUnit
SensitivitySf=1kHz, Pin=1Pa, 0dB=1V/Pa-39-38-37dB
Operating VoltageVDD
2.32.753V
Directivity

Omni-directional
Polarity
Sound pressure increaseOutput voltage increase
Sensitivity vs. VoltageΔSVs= 3V to 2.3V0.5dB
Output ImpedanceZOUTf=1kHz

400Ω
Current Consumption1I2.3 V to 3V
160250µA
S/N RatioS/N20-20KHz Bandwidth, A-Weighted6466
dBA
Total Harmonic DistortionTHD94dB SPL @1KHz
0.10.5%
Total Harmonic DistortionTHD131dBSPL @1KHz
1
%
Acoustic Overload PoinAOPTHD 10%@1KHz
137
dBSPL
Power Supply RejectionPSR100mVpp Squarewave @217Hz, A-weighted
-110-90dB
Power Supply Rejection RatioPSRR200mVpp Sinewave @1KHz7087
dB
DC outputVDC

1.30
V
Output load
Cload


150pF
Output loadRload
25

MΩ

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


b1_back1.jpg f1_img066.jpg

To be a worldwide outstanding electroacoustic technology leader

Contact Us