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  • MEMS

GTD2718BA-4

The GTD2718BA-4 is a small package, 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

  • 2.75x1.85x1.0mm Bottom Port

  • 1-bit PDM Output

  • Narrow Sensitivity +/-1dBFS

  • High SNR of 66dBA

  • Flat Frequency Performance

  • Multi Mode(Sleep,Low power,Normal)

  • Compatible with Standard SMD Reflow Technology

  • RoHS Compliance&Halogen Free

Performance Parameters

Symbol
Dtion
Min
Nom.
MaxUnit
FCLKClock Frequency2.312.42.57MHz
IDDSupply Current1
460550uA
SSensitivity3,94dBSPL@1KHz-27-26-25dBFS2
ΔSSensitivitydrop<0.5dBFS
SNR20-20KHz Bandwidth, A-weighted6466
dB(A)
THD94dB SPL @1KHz
0.060.5%
116dB SPL@1KHz
1
%
AOP10%THD@1KHz
121
dBSPL
PSRMeasuredwith217Hz,100mVppsquarewave

-70dBFS
Note：Frequency response, sensitivity and current consumption are tested by 100% on product line.


应用实例

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    头戴耳机
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